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I'm going to attend GATE in the domain mechanical.I'm in need of some sample questions.

hi!

You can download the Gates mechanical engineering sample papers from the following links:

http://www.onestopgate.com/gate-prep...sample-papers/

http://forums.sureshkumar.net/others...le-papers.html

hi,
i would advice you to purchase the previous years papers of gate by gk publishers.
it is solved and has all the answers in detailed manner
all the best

Dear Friend

I am also a Mechanical Engg student and I am also goin to appear in GATE this year.As far as sample questions are concerned,my friend few sample questions will not help you with your preparation.There are many books you can concern for good sample questions and solved papers:G.K Publication's "Mechanical Engineering for GATE" which you can buy from their site: http://www.gkpublications.com/
Best would be to make your Mathematics strong because it is the section where you can score most and questions are also simple.

All the best !!

hey check out this site...it will be helpful..........www.freshersworld.com

Dear friend

I am providing you three sample question paper of gate that is as follows:

Question set 1
Questions And Answers
No.
1 Stokes theorem connects
Options A) a line integral and a surface integral B) a surface integral and a volume integral
C) a line integral and a volume integral D) gradient of a function and its surface integral

Your Answer (Not Answered)
Correct Answer A

2 Match the following
Type of Mechanism Motion achieved
P. Scott � Russel mechanism 1. Intermittent motion
Q. Geneva mechanism 2. Quick return motion
R. Off-set slider-crank mechanism 3. Simple harmonic motion
S. Scotch Yoke mechanism 4. Straight line motion
Options A) P-2 Q-3 R-l S-4 B) P-3 Q-2 R-4 S-l
C) P-4 Q-l R-2 S-3 D) P-4 Q-3 R-l S-2

Your Answer (Not Answered)
Correct Answer C

3 A solar collector receiving solar radiation at the rate of 0.6 k W/m2 transforms it to the internal energy of a fluid at an overall efficiency of 50%. The fluid heated to 350 K is used to run a heat engine which rejects heat at 313 K. If the heat engine is to deliver 2.5 kW power, the minimum area of the solar collector required would be
Options A) 8.33m2 B) 16.66m2
C) 39.68m2 D) 79.36m2

Your Answer (Not Answered)
Correct Answer D

4 When the temperature of a solid metal increases,
Options A) strength of the metal decreaes but ductility increases B) both strength and ductility of the metal decrease
C) both strength and ductility of the metal increase D) strength of the metal increases but ductility decreases

Your Answer (Not Answered)
Correct Answer A

5 A company produces two types of toys: P and Q. Production time of Q is twice that of P and the company has a maximum of 2000 time units per day. The supply of raw material is just sufficient to produce 1500 toys (of any type) per day. Toy type Q requires an electric switch which is available @ 600 pieces per day only. The company makes a profit of Rs. 3 and Rs. 5 on type P and Q respectively. For maximization of profits, the daily production quantities of P and Q toys should respectively be
Options A) 100, 500 B) 500, 1000
C) 800, 600 D) 1000, 1000

Your Answer (Not Answered)
Correct Answer C

6 A spherical thermocouple junction of diameter 0.706 mm is to be used for the measurement of temperature of a gas stream. The convective heat transfer co-efficient on the bead surface is 400 W/m2K. Thermophysical properties of thermocouple material are k = 20 W/mK, C = 400 J/kg K and  = 8500 kg/m3. If the thermocouple initially tot 30�C is placed in a hot stream of 300�C, the time taken by the bead to reach 298�C, is
Options A) 2.35 s B) 4.9 s
C) 14.7 s D) 29.4 s

Your Answer (Not Answered)
Correct Answer B

7 In a spring-mass system, the mass is 0.1 kg and the stiffness of the spring is 1 kN/m. By introducing a damper, the frequency of oscillation is found to be 90% of the original value. What is the damping coefficient of the damper?
Options A) 1.2 N.s/m B) 3.4 N.s/m
C) 8.7 N.s/m D) 12.0 N.s/m

Your Answer (Not Answered)
Correct Answer C

8 In a machining operation, doubling the cutting speed reduces the tool life to
1
8
of the original value. The exponent n in Taylor
Options A)
1
8
B)
1
4

C)
1
3
D)
1
2


Your Answer (Not Answered)
Correct Answer C

9 In a rolling process, sheet of 25 mm thickness is rolled to 20 mm thickness. Roll is of diameter 600 mm and it rotates at 100 rpm. The roll strip contact length will be
Options A) 5 mm B) 39 mm
C) 78mm D) 120mm

Your Answer (Right Answer)

10 The values of a function f(x) are tabulated below
x f(x)
0 1
1 2
2 1
3 10
Using Newton,s forward difference formula, the cubic polynomial that can be fitted to the above data, is
Options A) 2x3+7x2- 6x + 2 B)
2x3 � 7x2 + 6x - 2
C)
x3 - 7x2 � 6x2 + 1 D)
2x3 - 7x2 + 6x + 1

Your Answer (Right Answer)

11 Two tools P and Q have signatures 5�-5�-6�-6�-8�-30�-0 and 5�-5�-7�-7�-8�-15�-0 (both ASA) respectively. They are used to turn components under the same machining conditions. If hp and hQ denote the peak-to-valley heights of surfaces produced by the tools P and Q, the ratio hp/hQ will be
Options A) B)
C) D)

Your Answer (Right Answer)

12 A soldering operation was work-sampled over two days (16 hours) during which an employee soldered 108 joints. Actual working time was 90% of the total time and the performance rating was estimated to be 120 percent. If the contract provides allowance of 20 percent of the total time available, the standard time for the operation would be
Options A) 8min. B) 8.9 min.
C) 10 min D) 12 min.

Your Answer (Not Answered)
Correct Answer D

13 A welding operation is time-studied during which an operator was pace-rated as 120%. The operator took, on an average, 8 minutes for producing the weld-joint. If a total of 10% allowances are allowed for this operation, the expected standard production rate of the weld-joint (in units per 8 hour day) is
Options A) 45 B) 50
C) 55 D) 60

Your Answer (Not Answered)
Correct Answer A

14 In PERT analysis a critical activity has
Options A) maximum Float B) zero Float
C) maximum Cost D) minimum Cost

Your Answer (Not Answered)
Correct Answer B

15 Through holes of 10 mm diameter are to be drilled in a steel plate of 20 mm thickness. Drill spindle speed is 300 rpm, feed 0.2 mm/rev and drill point angle is 120�. Assuming drill overtravel of 2 mm, the time for producing a hole will be
Options A) 4 Seconds B) 25 seconds
C) 100 seconds D) 110 seconds

Your Answer (Right Answer)

16 Environment friendly refrigerant R134a is used in the new generation domestic refrigerators. Its chemical formula is
Options A) CH C1 F2 B) C2 C13 F3
C) C2 C12 F4 D) C2 H2 F4

Your Answer (Not Answered)
Correct Answer D

17 A standard machine tool and an automatic machine tool are being compared for the production of a component. Following data refers to the two machines.
Standard
Machine Tool Automatic
Machine Tool
Setup time 30 min. 2 hours
Machining time per piece 22 min. 5min
Machine rate Rs. 200 per hour Rs. 800 per hour
The breakeven production batch size above which the automatic machine tool will be economical to use, will be

Options A) 4 B) 5
C) 24 D) 225

Your Answer (Right Answer)

18 The mechanism of material removal in EDM process is
Options A) Melting and Evaporation B) Melting and Corrosion
C) Erosion and Cavitation D) Cavitation and Evaporation

Your Answer (Not Answered)
Correct Answer A

19 From a pack of regular playing cards, two cards are drawn at random. What is the probability that both cards will be Kings, if the first card is NOT replaced?
Options A)
1
26
B)
1
52

C)
1
169
D)
1
221


Your Answer (Not Answered)
Correct Answer D

20 The strength of a brazed joint
Options A) decreases with increase in gap between the two joining surfaces B) increases with increase in gap between the two joining surfaces
C) decreases up to certain gap between the two joining surfaces beyond which it increases D) increases up to certain gap between the two joining surfaces beyond which it decreases

Your Answer (Not Answered)
Correct Answer D

Question set 2
Questions And Answers
No.
1 In PERT analysis a critical activity has
Options A) maximum Float B) zero Float
C) maximum Cost D) minimum Cost

Your Answer (Not Answered)
Correct Answer B

2 Environment friendly refrigerant R134a is used in the new generation domestic refrigerators. Its chemical formula is
Options A) CH C1 F2 B) C2 C13 F3
C) C2 C12 F4 D) C2 H2 F4

Your Answer (Not Answered)
Correct Answer D

3 A solid cylinder (surface 2) is located at the centre of a hollow sphere (surface 1). The diameter of the sphere is 1m, while the cylinder has a diameter and length of 0.5 m each. The radiation configuration factor F11 is
Options A) 0.375 B) 0.625
C) 0.75 D) 1

Your Answer (Not Answered)
Correct Answer C

4 For a fluid flow through a divergent pipe of length L having inlet and outlet radii of R1 and R2 respectively and a constant flow rate of Q, assuming the velocity to be axial and uniform at any cross-section, the acceleration at the exit is
Options A)
2Q(R1 - R2)
 LR23
B)
2Q2 (R1 - R2)
 LR23

C)
2Q2 (R1 - R2)
LR25
D)
2Q2 (R2 - R1)
LR25


Your Answer (Not Answered)
Correct Answer C

5 An incompressible fluid (kinematic viscosity, 7.4 x 10-7 m2/s, specific gravity, 0.88) is held between two parallel plates. If the top plate is moved with a velocity of 0.5 m/s while the bottom one is held stationary, the fluid attains a linear velocity profile in the gap of 0.5 mm between these plates; the shear stress in Pascals on the surface of top plate is
Options A) 0.651 x 10-3 B) 0.651
C) 6.51 D) 0.651 x 103

Your Answer (Not Answered)
Correct Answer B

6 The tool of an NC machine has to move along a circular arc from (5,5) to (10,10) while performing an operation. The centre of the arc is at (10,5). Which one of the following NC tool path commands performs the above mentioned operation?
Options A) N010 G02 X10 Y10 X5 Y5 R5 B) N010 G03 X10 Y10 X5 Y5 R5
C) N010 G01 X5 Y5 X10 Y10 R5 D) N010 G02 X5 Y5 X10 Y10 R5

Your Answer (Not Answered)
Correct Answer D

7 During a Morse test on a 4 cylinder engine, the following measurements of brake power were taken at constant speed.
All cylinders firing 3037 kW
Number 1 cylinder not firing 2102 kW
Number 2 cylinder not firing 2102 kW
Number 3 cylinder not firing 2100 kW
Number 4 cylinder not firing 2098 kW
The mechanical efficiency of the engine is
Options A) 91.53% B) 85.07%
C) 81.07% D) 61.22%

Your Answer (Right Answer)

8 In terms of theoretical stress concentration factor (Kt) and fatigue stress concentration factor (Kf ), the notch sensitivity �q� is expressed as
Options A)
(Kf -1)
(Kt -1)
B)
(Kf -1)
(Kt +1)

C)
(Kt -1)
(Kf -1)
D)
(Kf +1)
(Kt +1)


Your Answer (Not Answered)
Correct Answer A

9 Starting from x0 = 1, one step of Newton-Raphson method in solving the equation x3 + 3x -7 = 0 gives the next value (x1) as
Options A) x1 = 0.5 B)
x1= 1.406
C) x1= 1.5 D) x1 = 2

Your Answer (Not Answered)
Correct Answer C

10 A maintenance service facility has Poisson arrival rates, negative exponential service time and operates on a �first come first served� queue discipline. Break downs occur on an average of 3 per day with a range of zero to eight. The maintenance crew can service an average of 6 machines per day with a range of zero to seven.
The mean waiting time for an item to be serviced would be
Options A)
1
6
day B)
1
3
day
C) 1 day D) 3 days

Your Answer (Not Answered)
Correct Answer A

11 The S-N curve for steel becomes asymptotic nearly at

Options A) 103 cycles B) 104 cycles
C) 106 cycles D) 109 cycles

Your Answer (Not Answered)
Correct Answer C

12 In a rolling process, sheet of 25 mm thickness is rolled to 20 mm thickness. Roll is of diameter 600 mm and it rotates at 100 rpm. The roll strip contact length will be
Options A) 5 mm B) 39 mm
C) 78mm D) 120mm

Your Answer (Right Answer)

13 Water at 42�C is sprayed into a stream of air at atmospheric pressure, dry bulb temperature of 40�C and a wet bulb temperature of 20�C. The air leaving the spray humidifier is not saturated. Which of the following statements is true?
Options A) Air gets cooled and humidified B) Air gets heated and humidified
C) Air gets heated and dehumidified D) Air gets cooled and dehumidified

Your Answer (Not Answered)
Correct Answer B

14 The angle between two unit-magnitude coplanar vectors P(0.866, 0.500,0) and Q(0.259, 0.966,0) will be
Options A) 0� B) -30�
C) 45� D) 60�

Your Answer (Not Answered)
Correct Answer C

15 A lot has 10% defective items. Ten items are chosen randomly from this lot. The probability that exactly 2 of the chosen items are defective is
Options A)
0.0036 B) 0.1937
C) 0.2234 D) 0.3874

Your Answer (Not Answered)
Correct Answer B

16 Two tools P and Q have signatures 5�-5�-6�-6�-8�-30�-0 and 5�-5�-7�-7�-8�-15�-0 (both ASA) respectively. They are used to turn components under the same machining conditions. If hp and hQ denote the peak-to-valley heights of surfaces produced by the tools P and Q, the ratio hp/hQ will be
Options A) B)
C) D)

Your Answer (Right Answer)

17 For a typical sample of ambient air (at 35� C, 75% relative humidity and standard atmospheric pressure), the amount of moisture in kg per kg of dry air will be approximately
Options A) 0.002 B) 0.027
C) 0.25 D) 0.75

Your Answer (Not Answered)
Correct Answer B

18 For a fluid flow through a divergent pipe of length L having inlet and outlet radii of R1 and R2 respectively and a constant flow rate of Q, assuming the velocity to be axial and uniform at any cross-section, the acceleration at the exit is
Options A)
2Q(R1 - R2)
 LR23
B)
2Q2 (R1 - R2)
 LR23

C)
2Q2 (R1 - R2)
LR25
D)
2Q2 (R2 - R1)
LR25


Your Answer (Not Answered)
Correct Answer C

19 A mould has a downsprue whose length is 20 cm and the cross sectional area at the base of the downsprue is 1 cm2. The downsprue feeds a horizontal runner leading into the mould cavity of volume 1000 cm3 . The time required to fill the mould cavity will be
Options A) 4.05 s B) 5.05 s
C) 6.05 s D) 7.25 s

Your Answer (Not Answered)
Correct Answer B

20 The values of a function f(x) are tabulated below
x f(x)
0 1
1 2
2 1
3 10
Using Newton,s forward difference formula, the cubic polynomial that can be fitted to the above data, is
Options A) 2x3+7x2- 6x + 2 B)
2x3 � 7x2 + 6x - 2
C)
x3 - 7x2 � 6x2 + 1 D)
2x3 - 7x2 + 6x + 1




SET 3
Questions And Answers
No.
1 The following data about the flow of liquid was observed in a continuous chemical process plant
Flow rate
(litres/sec) 7.5
to
7.7 7.7
to
7.9 7.9
to
8.1 8.1
to
8.3 8.3
to
8.5 8.5
to
8.7
Frequency 1 5 35 17 12 10
Mean flow rate of the liquid is
Options A) 8.00 litres/sec B) 8.06 litres/sec
C) 8.16 litres/sec D) 8.26 litres/sec

Your Answer (Not Answered)
Correct Answer C

2 During the execution of a CNC part program block
NO20 GO2 X45.0 Y25.0 R5.0
the type of tool motion will be
Options A) circular Interpolation � clockwise B) circular Interpolation � counterclockwise
C) linear Interpolation D) rapid feed

Your Answer (Not Answered)
Correct Answer A

3 A component can be produced by any of the four processes I, II, III and IV. Process I has a fixed cost ofRs. 20 and variable cost of Rs. 3 per piece. Process II has a fixed cost Rs. 50 and variable cost of Re. 1 per piece. Process III has a fixed cost of Rs. 40 and variable cost of Rs. 2 per piece. Process IV has a fixed cost of Rs. 10 and variable cost of Rs. 4 per piece. If the company wishes to produce 100 pieces of the
component, from economic point of view it should choose
Options A) Process I B) Process II
C) Process III D) Process IV

Your Answer (Not Answered)
Correct Answer B

4
Options A) B)
C) D)

Your Answer (Right Answer)

5 In an interchangeable assembly, shafts of size 25.000+0.040mm mate with holes of size 25.000+0.020 mm. The maximum possible clearance in the assembly will be
Options A) 10 microns B) 20 microns
C) 30 microns D) 60 microns

Your Answer (Not Answered)
Correct Answer D

6 A company has two factories S1, S2 and two warehouses D1, D2. The supplies from S1 and S2 are 50 and 40 units respectively. Warehouse D1 requires a minimum of 20 units and a maximum of 40 units. Warehouse D2 requires a minimum of 20 units and, over and above, it can take as much as can be supplied. A balanced transportation problem is to be formulated for the above situation. The number of supply points, the number of demand points, and the total supply (or total demand) in the balanced transportation problem respectively are
Options A) 2, 4, 90 B) 2, 4, 110
C) 3, 4, 90 D) 3, 4, 110

Your Answer (Not Answered)
Correct Answer C

7 A standard machine tool and an automatic machine tool are being compared for the production of a component. Following data refers to the two machines.
Standard
Machine Tool Automatic
Machine Tool
Setup time 30 min. 2 hours
Machining time per piece 22 min. 5min
Machine rate Rs. 200 per hour Rs. 800 per hour
The breakeven production batch size above which the automatic machine tool will be economical to use, will be

Options A) 4 B) 5
C) 24 D) 225

Your Answer (Right Answer)

8 An incompressible fluid (kinematic viscosity, 7.4 x 10-7 m2/s, specific gravity, 0.88) is held between two parallel plates. If the top plate is moved with a velocity of 0.5 m/s while the bottom one is held stationary, the fluid attains a linear velocity profile in the gap of 0.5 mm between these plates; the shear stress in Pascals on the surface of top plate is
Options A) 0.651 x 10-3 B) 0.651
C) 6.51 D) 0.651 x 103

Your Answer (Not Answered)
Correct Answer B

9 A weighing machine consists of a 2 kg pan resting on spring. In this condition, with the pan resting on the spring, the length of the spring is 200 mm. When a mass of 20 kg is placed on the pan, the length of the spring becomes 100 mm. For the spring, the un-deformed length 10 and the spring constant k (stiffness) are
Options A) l0 = 220 mm, k = 1862 N/m B) l0 = 210 mm, k = 1960 N/m
C) l0 = 200 mm, k = 1960 N/m D) l0 = 200 mm, k = 2156 N/m

Your Answer (Not Answered)
Correct Answer B

10 Match the following with respect to spatial mechanisms.
Type of Joint Degrees of constraint
P-Revolute. 1. Three
Q-Cylindrical 2. Five
R-Spherical 3. Four
4. Two
5. Zero
Options A) P-l Q-3 R-3 B) P-5 Q-4 R-3
C) P-2 Q-3 R-l D) P-4 Q-5 R-3

Your Answer (Not Answered)
Correct Answer C

11 Environment friendly refrigerant R134a is used in the new generation domestic refrigerators. Its chemical formula is
Options A) CH C1 F2 B) C2 C13 F3
C) C2 C12 F4 D) C2 H2 F4

Your Answer (Not Answered)
Correct Answer D

12 A company has an annual demand of 1000 units, ordering cost of Us. 100/order and carrying cost of Rs. 100/unit-year. If the stock-out costs are estimated to be nearly Rs. 400 each time the company runs out-of-stock, the safety stock justified by the carrying cost will be
Options A) 4 B) 20
C) 40 D) 100

Your Answer (Right Answer)

13 Which among the NC operations given below are continuous path operations?
Arc Welding (AW)
Milling (M)
Drilling (D)
Punching is Sheet Metal (P)
Laser Cutting of Sheet Metal (LC)
Spot Welding (SW)
Options A) AW, LC and M B) AW, D, LC and M
C) D, LC, P and SW D) D, LC, and SW

Your Answer (Not Answered)
Correct Answer B

14 The S-N curve for steel becomes asymptotic nearly at

Options A) 103 cycles B) 104 cycles
C) 106 cycles D) 109 cycles

Your Answer (Not Answered)
Correct Answer C

15 There are four samples P, Q, R and S, with natural frequencies 64, 96, 128 and
256 Hz, respectively. They are mounted on test setups for conducting vibration experiments. If a loud pure note of frequency 144 Hz is produced by some instrument, which of the samples will show the most perceptible induced vibration?
Options A) P B) Q
C) R D) S

Your Answer (Not Answered)
Correct Answer A

16 A vibrating machine is isolated from the floor using springs. If the ratio of excitation frequency of vibration of machine to the natural frequency of the isolation system is equal to 0.5, the transmissibility of ratio of isolation is
Options A)
1
2
B)
3
4

C)
4
3
D) 2

Your Answer (Not Answered)
Correct Answer C

17 When 3-2-1 principle is used to support and locate a three dimensional work-piece during machining, the number of degress of freedom that are restricted is
Options A) 7 B) 8
C) 9 D) 10

Your Answer (Not Answered)
Correct Answer C

18 A solar collector receiving solar radiation at the rate of 0.6 k W/m2 transforms it to the internal energy of a fluid at an overall efficiency of 50%. The fluid heated to 350 K is used to run a heat engine which rejects heat at 313 K. If the heat engine is to deliver 2.5 kW power, the minimum area of the solar collector required would be
Options A) 8.33m2 B) 16.66m2
C) 39.68m2 D) 79.36m2

Your Answer (Not Answered)
Correct Answer D

19 A fluid flow is represented by the velocity field

V
>
= ax

i
>
+ ay

j
>
where a is a constant. The equation of stream line passing through a point (1, 2) is
Options A) x-2y = 0 B) 2x + y = 0
C) 2x - y = 0 D) x + 2y = 0

Your Answer (Not Answered)
Correct Answer C

20 A welding operation is time-studied during which an operator was pace-rated as 120%. The operator took, on an average, 8 minutes for producing the weld-joint. If a total of 10% allowances are allowed for this operation, the expected standard production rate of the weld-joint (in units per 8 hour day) is
Options A) 45 B) 50
C) 55 D) 60

Your Answer (Not Answered)
Correct Answer

Best of luck

Dear friend

I am providing you three sample question paper of gate that is as follows:

Question set 1
Questions And Answers
No.
1 Stokes theorem connects
Options A) a line integral and a surface integral B) a surface integral and a volume integral
C) a line integral and a volume integral D) gradient of a function and its surface integral

Your Answer (Not Answered)
Correct Answer A

2 Match the following
Type of Mechanism Motion achieved
P. Scott � Russel mechanism 1. Intermittent motion
Q. Geneva mechanism 2. Quick return motion
R. Off-set slider-crank mechanism 3. Simple harmonic motion
S. Scotch Yoke mechanism 4. Straight line motion
Options A) P-2 Q-3 R-l S-4 B) P-3 Q-2 R-4 S-l
C) P-4 Q-l R-2 S-3 D) P-4 Q-3 R-l S-2

Your Answer (Not Answered)
Correct Answer C

3 A solar collector receiving solar radiation at the rate of 0.6 k W/m2 transforms it to the internal energy of a fluid at an overall efficiency of 50%. The fluid heated to 350 K is used to run a heat engine which rejects heat at 313 K. If the heat engine is to deliver 2.5 kW power, the minimum area of the solar collector required would be
Options A) 8.33m2 B) 16.66m2
C) 39.68m2 D) 79.36m2

Your Answer (Not Answered)
Correct Answer D

4 When the temperature of a solid metal increases,
Options A) strength of the metal decreaes but ductility increases B) both strength and ductility of the metal decrease
C) both strength and ductility of the metal increase D) strength of the metal increases but ductility decreases

Your Answer (Not Answered)
Correct Answer A

5 A company produces two types of toys: P and Q. Production time of Q is twice that of P and the company has a maximum of 2000 time units per day. The supply of raw material is just sufficient to produce 1500 toys (of any type) per day. Toy type Q requires an electric switch which is available @ 600 pieces per day only. The company makes a profit of Rs. 3 and Rs. 5 on type P and Q respectively. For maximization of profits, the daily production quantities of P and Q toys should respectively be
Options A) 100, 500 B) 500, 1000
C) 800, 600 D) 1000, 1000

Your Answer (Not Answered)
Correct Answer C

6 A spherical thermocouple junction of diameter 0.706 mm is to be used for the measurement of temperature of a gas stream. The convective heat transfer co-efficient on the bead surface is 400 W/m2K. Thermophysical properties of thermocouple material are k = 20 W/mK, C = 400 J/kg K and  = 8500 kg/m3. If the thermocouple initially tot 30�C is placed in a hot stream of 300�C, the time taken by the bead to reach 298�C, is
Options A) 2.35 s B) 4.9 s
C) 14.7 s D) 29.4 s

Your Answer (Not Answered)
Correct Answer B

7 In a spring-mass system, the mass is 0.1 kg and the stiffness of the spring is 1 kN/m. By introducing a damper, the frequency of oscillation is found to be 90% of the original value. What is the damping coefficient of the damper?
Options A) 1.2 N.s/m B) 3.4 N.s/m
C) 8.7 N.s/m D) 12.0 N.s/m

Your Answer (Not Answered)
Correct Answer C

8 In a machining operation, doubling the cutting speed reduces the tool life to
1
8
of the original value. The exponent n in Taylor
Options A)
1
8
B)
1
4

C)
1
3
D)
1
2


Your Answer (Not Answered)
Correct Answer C

9 In a rolling process, sheet of 25 mm thickness is rolled to 20 mm thickness. Roll is of diameter 600 mm and it rotates at 100 rpm. The roll strip contact length will be
Options A) 5 mm B) 39 mm
C) 78mm D) 120mm

Your Answer (Right Answer)

10 The values of a function f(x) are tabulated below
x f(x)
0 1
1 2
2 1
3 10
Using Newton,s forward difference formula, the cubic polynomial that can be fitted to the above data, is
Options A) 2x3+7x2- 6x + 2 B)
2x3 � 7x2 + 6x - 2
C)
x3 - 7x2 � 6x2 + 1 D)
2x3 - 7x2 + 6x + 1

Your Answer (Right Answer)

11 Two tools P and Q have signatures 5�-5�-6�-6�-8�-30�-0 and 5�-5�-7�-7�-8�-15�-0 (both ASA) respectively. They are used to turn components under the same machining conditions. If hp and hQ denote the peak-to-valley heights of surfaces produced by the tools P and Q, the ratio hp/hQ will be
Options A) B)
C) D)

Your Answer (Right Answer)

12 A soldering operation was work-sampled over two days (16 hours) during which an employee soldered 108 joints. Actual working time was 90% of the total time and the performance rating was estimated to be 120 percent. If the contract provides allowance of 20 percent of the total time available, the standard time for the operation would be
Options A) 8min. B) 8.9 min.
C) 10 min D) 12 min.

Your Answer (Not Answered)
Correct Answer D

13 A welding operation is time-studied during which an operator was pace-rated as 120%. The operator took, on an average, 8 minutes for producing the weld-joint. If a total of 10% allowances are allowed for this operation, the expected standard production rate of the weld-joint (in units per 8 hour day) is
Options A) 45 B) 50
C) 55 D) 60

Your Answer (Not Answered)
Correct Answer A

14 In PERT analysis a critical activity has
Options A) maximum Float B) zero Float
C) maximum Cost D) minimum Cost

Your Answer (Not Answered)
Correct Answer B

15 Through holes of 10 mm diameter are to be drilled in a steel plate of 20 mm thickness. Drill spindle speed is 300 rpm, feed 0.2 mm/rev and drill point angle is 120�. Assuming drill overtravel of 2 mm, the time for producing a hole will be
Options A) 4 Seconds B) 25 seconds
C) 100 seconds D) 110 seconds

Your Answer (Right Answer)

16 Environment friendly refrigerant R134a is used in the new generation domestic refrigerators. Its chemical formula is
Options A) CH C1 F2 B) C2 C13 F3
C) C2 C12 F4 D) C2 H2 F4

Your Answer (Not Answered)
Correct Answer D

17 A standard machine tool and an automatic machine tool are being compared for the production of a component. Following data refers to the two machines.
Standard
Machine Tool Automatic
Machine Tool
Setup time 30 min. 2 hours
Machining time per piece 22 min. 5min
Machine rate Rs. 200 per hour Rs. 800 per hour
The breakeven production batch size above which the automatic machine tool will be economical to use, will be

Options A) 4 B) 5
C) 24 D) 225

Your Answer (Right Answer)

18 The mechanism of material removal in EDM process is
Options A) Melting and Evaporation B) Melting and Corrosion
C) Erosion and Cavitation D) Cavitation and Evaporation

Your Answer (Not Answered)
Correct Answer A

19 From a pack of regular playing cards, two cards are drawn at random. What is the probability that both cards will be Kings, if the first card is NOT replaced?
Options A)
1
26
B)
1
52

C)
1
169
D)
1
221


Your Answer (Not Answered)
Correct Answer D

20 The strength of a brazed joint
Options A) decreases with increase in gap between the two joining surfaces B) increases with increase in gap between the two joining surfaces
C) decreases up to certain gap between the two joining surfaces beyond which it increases D) increases up to certain gap between the two joining surfaces beyond which it decreases

Your Answer (Not Answered)
Correct Answer D

Question set 2
Questions And Answers
No.
1 In PERT analysis a critical activity has
Options A) maximum Float B) zero Float
C) maximum Cost D) minimum Cost

Your Answer (Not Answered)
Correct Answer B

2 Environment friendly refrigerant R134a is used in the new generation domestic refrigerators. Its chemical formula is
Options A) CH C1 F2 B) C2 C13 F3
C) C2 C12 F4 D) C2 H2 F4

Your Answer (Not Answered)
Correct Answer D

3 A solid cylinder (surface 2) is located at the centre of a hollow sphere (surface 1). The diameter of the sphere is 1m, while the cylinder has a diameter and length of 0.5 m each. The radiation configuration factor F11 is
Options A) 0.375 B) 0.625
C) 0.75 D) 1

Your Answer (Not Answered)
Correct Answer C

4 For a fluid flow through a divergent pipe of length L having inlet and outlet radii of R1 and R2 respectively and a constant flow rate of Q, assuming the velocity to be axial and uniform at any cross-section, the acceleration at the exit is
Options A)
2Q(R1 - R2)
 LR23
B)
2Q2 (R1 - R2)
 LR23

C)
2Q2 (R1 - R2)
LR25
D)
2Q2 (R2 - R1)
LR25


Your Answer (Not Answered)
Correct Answer C

5 An incompressible fluid (kinematic viscosity, 7.4 x 10-7 m2/s, specific gravity, 0.88) is held between two parallel plates. If the top plate is moved with a velocity of 0.5 m/s while the bottom one is held stationary, the fluid attains a linear velocity profile in the gap of 0.5 mm between these plates; the shear stress in Pascals on the surface of top plate is
Options A) 0.651 x 10-3 B) 0.651
C) 6.51 D) 0.651 x 103

Your Answer (Not Answered)
Correct Answer B

6 The tool of an NC machine has to move along a circular arc from (5,5) to (10,10) while performing an operation. The centre of the arc is at (10,5). Which one of the following NC tool path commands performs the above mentioned operation?
Options A) N010 G02 X10 Y10 X5 Y5 R5 B) N010 G03 X10 Y10 X5 Y5 R5
C) N010 G01 X5 Y5 X10 Y10 R5 D) N010 G02 X5 Y5 X10 Y10 R5

Your Answer (Not Answered)
Correct Answer D

7 During a Morse test on a 4 cylinder engine, the following measurements of brake power were taken at constant speed.
All cylinders firing 3037 kW
Number 1 cylinder not firing 2102 kW
Number 2 cylinder not firing 2102 kW
Number 3 cylinder not firing 2100 kW
Number 4 cylinder not firing 2098 kW
The mechanical efficiency of the engine is
Options A) 91.53% B) 85.07%
C) 81.07% D) 61.22%

Your Answer (Right Answer)

8 In terms of theoretical stress concentration factor (Kt) and fatigue stress concentration factor (Kf ), the notch sensitivity �q� is expressed as
Options A)
(Kf -1)
(Kt -1)
B)
(Kf -1)
(Kt +1)

C)
(Kt -1)
(Kf -1)
D)
(Kf +1)
(Kt +1)


Your Answer (Not Answered)
Correct Answer A

9 Starting from x0 = 1, one step of Newton-Raphson method in solving the equation x3 + 3x -7 = 0 gives the next value (x1) as
Options A) x1 = 0.5 B)
x1= 1.406
C) x1= 1.5 D) x1 = 2

Your Answer (Not Answered)
Correct Answer C

10 A maintenance service facility has Poisson arrival rates, negative exponential service time and operates on a �first come first served� queue discipline. Break downs occur on an average of 3 per day with a range of zero to eight. The maintenance crew can service an average of 6 machines per day with a range of zero to seven.
The mean waiting time for an item to be serviced would be
Options A)
1
6
day B)
1
3
day
C) 1 day D) 3 days

Your Answer (Not Answered)
Correct Answer A

11 The S-N curve for steel becomes asymptotic nearly at

Options A) 103 cycles B) 104 cycles
C) 106 cycles D) 109 cycles

Your Answer (Not Answered)
Correct Answer C

12 In a rolling process, sheet of 25 mm thickness is rolled to 20 mm thickness. Roll is of diameter 600 mm and it rotates at 100 rpm. The roll strip contact length will be
Options A) 5 mm B) 39 mm
C) 78mm D) 120mm

Your Answer (Right Answer)

13 Water at 42�C is sprayed into a stream of air at atmospheric pressure, dry bulb temperature of 40�C and a wet bulb temperature of 20�C. The air leaving the spray humidifier is not saturated. Which of the following statements is true?
Options A) Air gets cooled and humidified B) Air gets heated and humidified
C) Air gets heated and dehumidified D) Air gets cooled and dehumidified

Your Answer (Not Answered)
Correct Answer B

14 The angle between two unit-magnitude coplanar vectors P(0.866, 0.500,0) and Q(0.259, 0.966,0) will be
Options A) 0� B) -30�
C) 45� D) 60�

Your Answer (Not Answered)
Correct Answer C

15 A lot has 10% defective items. Ten items are chosen randomly from this lot. The probability that exactly 2 of the chosen items are defective is
Options A)
0.0036 B) 0.1937
C) 0.2234 D) 0.3874

Your Answer (Not Answered)
Correct Answer B

16 Two tools P and Q have signatures 5�-5�-6�-6�-8�-30�-0 and 5�-5�-7�-7�-8�-15�-0 (both ASA) respectively. They are used to turn components under the same machining conditions. If hp and hQ denote the peak-to-valley heights of surfaces produced by the tools P and Q, the ratio hp/hQ will be
Options A) B)
C) D)

Your Answer (Right Answer)

17 For a typical sample of ambient air (at 35� C, 75% relative humidity and standard atmospheric pressure), the amount of moisture in kg per kg of dry air will be approximately
Options A) 0.002 B) 0.027
C) 0.25 D) 0.75

Your Answer (Not Answered)
Correct Answer B

18 For a fluid flow through a divergent pipe of length L having inlet and outlet radii of R1 and R2 respectively and a constant flow rate of Q, assuming the velocity to be axial and uniform at any cross-section, the acceleration at the exit is
Options A)
2Q(R1 - R2)
 LR23
B)
2Q2 (R1 - R2)
 LR23

C)
2Q2 (R1 - R2)
LR25
D)
2Q2 (R2 - R1)
LR25


Your Answer (Not Answered)
Correct Answer C

19 A mould has a downsprue whose length is 20 cm and the cross sectional area at the base of the downsprue is 1 cm2. The downsprue feeds a horizontal runner leading into the mould cavity of volume 1000 cm3 . The time required to fill the mould cavity will be
Options A) 4.05 s B) 5.05 s
C) 6.05 s D) 7.25 s

Your Answer (Not Answered)
Correct Answer B

20 The values of a function f(x) are tabulated below
x f(x)
0 1
1 2
2 1
3 10
Using Newton,s forward difference formula, the cubic polynomial that can be fitted to the above data, is
Options A) 2x3+7x2- 6x + 2 B)
2x3 � 7x2 + 6x - 2
C)
x3 - 7x2 � 6x2 + 1 D)
2x3 - 7x2 + 6x + 1




SET 3
Questions And Answers
No.
1 The following data about the flow of liquid was observed in a continuous chemical process plant
Flow rate
(litres/sec) 7.5
to
7.7 7.7
to
7.9 7.9
to
8.1 8.1
to
8.3 8.3
to
8.5 8.5
to
8.7
Frequency 1 5 35 17 12 10
Mean flow rate of the liquid is
Options A) 8.00 litres/sec B) 8.06 litres/sec
C) 8.16 litres/sec D) 8.26 litres/sec

Your Answer (Not Answered)
Correct Answer C

2 During the execution of a CNC part program block
NO20 GO2 X45.0 Y25.0 R5.0
the type of tool motion will be
Options A) circular Interpolation � clockwise B) circular Interpolation � counterclockwise
C) linear Interpolation D) rapid feed

Your Answer (Not Answered)
Correct Answer A

3 A component can be produced by any of the four processes I, II, III and IV. Process I has a fixed cost ofRs. 20 and variable cost of Rs. 3 per piece. Process II has a fixed cost Rs. 50 and variable cost of Re. 1 per piece. Process III has a fixed cost of Rs. 40 and variable cost of Rs. 2 per piece. Process IV has a fixed cost of Rs. 10 and variable cost of Rs. 4 per piece. If the company wishes to produce 100 pieces of the
component, from economic point of view it should choose
Options A) Process I B) Process II
C) Process III D) Process IV

Your Answer (Not Answered)
Correct Answer B

4
Options A) B)
C) D)

Your Answer (Right Answer)

5 In an interchangeable assembly, shafts of size 25.000+0.040mm mate with holes of size 25.000+0.020 mm. The maximum possible clearance in the assembly will be
Options A) 10 microns B) 20 microns
C) 30 microns D) 60 microns

Your Answer (Not Answered)
Correct Answer D

6 A company has two factories S1, S2 and two warehouses D1, D2. The supplies from S1 and S2 are 50 and 40 units respectively. Warehouse D1 requires a minimum of 20 units and a maximum of 40 units. Warehouse D2 requires a minimum of 20 units and, over and above, it can take as much as can be supplied. A balanced transportation problem is to be formulated for the above situation. The number of supply points, the number of demand points, and the total supply (or total demand) in the balanced transportation problem respectively are
Options A) 2, 4, 90 B) 2, 4, 110
C) 3, 4, 90 D) 3, 4, 110

Your Answer (Not Answered)
Correct Answer C

7 A standard machine tool and an automatic machine tool are being compared for the production of a component. Following data refers to the two machines.
Standard
Machine Tool Automatic
Machine Tool
Setup time 30 min. 2 hours
Machining time per piece 22 min. 5min
Machine rate Rs. 200 per hour Rs. 800 per hour
The breakeven production batch size above which the automatic machine tool will be economical to use, will be

Options A) 4 B) 5
C) 24 D) 225

Your Answer (Right Answer)

8 An incompressible fluid (kinematic viscosity, 7.4 x 10-7 m2/s, specific gravity, 0.88) is held between two parallel plates. If the top plate is moved with a velocity of 0.5 m/s while the bottom one is held stationary, the fluid attains a linear velocity profile in the gap of 0.5 mm between these plates; the shear stress in Pascals on the surface of top plate is
Options A) 0.651 x 10-3 B) 0.651
C) 6.51 D) 0.651 x 103

Your Answer (Not Answered)
Correct Answer B

9 A weighing machine consists of a 2 kg pan resting on spring. In this condition, with the pan resting on the spring, the length of the spring is 200 mm. When a mass of 20 kg is placed on the pan, the length of the spring becomes 100 mm. For the spring, the un-deformed length 10 and the spring constant k (stiffness) are
Options A) l0 = 220 mm, k = 1862 N/m B) l0 = 210 mm, k = 1960 N/m
C) l0 = 200 mm, k = 1960 N/m D) l0 = 200 mm, k = 2156 N/m

Your Answer (Not Answered)
Correct Answer B

10 Match the following with respect to spatial mechanisms.
Type of Joint Degrees of constraint
P-Revolute. 1. Three
Q-Cylindrical 2. Five
R-Spherical 3. Four
4. Two
5. Zero
Options A) P-l Q-3 R-3 B) P-5 Q-4 R-3
C) P-2 Q-3 R-l D) P-4 Q-5 R-3

Your Answer (Not Answered)
Correct Answer C

11 Environment friendly refrigerant R134a is used in the new generation domestic refrigerators. Its chemical formula is
Options A) CH C1 F2 B) C2 C13 F3
C) C2 C12 F4 D) C2 H2 F4

Your Answer (Not Answered)
Correct Answer D

12 A company has an annual demand of 1000 units, ordering cost of Us. 100/order and carrying cost of Rs. 100/unit-year. If the stock-out costs are estimated to be nearly Rs. 400 each time the company runs out-of-stock, the safety stock justified by the carrying cost will be
Options A) 4 B) 20
C) 40 D) 100

Your Answer (Right Answer)

13 Which among the NC operations given below are continuous path operations?
Arc Welding (AW)
Milling (M)
Drilling (D)
Punching is Sheet Metal (P)
Laser Cutting of Sheet Metal (LC)
Spot Welding (SW)
Options A) AW, LC and M B) AW, D, LC and M
C) D, LC, P and SW D) D, LC, and SW

Your Answer (Not Answered)
Correct Answer B

14 The S-N curve for steel becomes asymptotic nearly at

Options A) 103 cycles B) 104 cycles
C) 106 cycles D) 109 cycles

Your Answer (Not Answered)
Correct Answer C

15 There are four samples P, Q, R and S, with natural frequencies 64, 96, 128 and
256 Hz, respectively. They are mounted on test setups for conducting vibration experiments. If a loud pure note of frequency 144 Hz is produced by some instrument, which of the samples will show the most perceptible induced vibration?
Options A) P B) Q
C) R D) S

Your Answer (Not Answered)
Correct Answer A

16 A vibrating machine is isolated from the floor using springs. If the ratio of excitation frequency of vibration of machine to the natural frequency of the isolation system is equal to 0.5, the transmissibility of ratio of isolation is
Options A)
1
2
B)
3
4

C)
4
3
D) 2

Your Answer (Not Answered)
Correct Answer C

17 When 3-2-1 principle is used to support and locate a three dimensional work-piece during machining, the number of degress of freedom that are restricted is
Options A) 7 B) 8
C) 9 D) 10

Your Answer (Not Answered)
Correct Answer C

18 A solar collector receiving solar radiation at the rate of 0.6 k W/m2 transforms it to the internal energy of a fluid at an overall efficiency of 50%. The fluid heated to 350 K is used to run a heat engine which rejects heat at 313 K. If the heat engine is to deliver 2.5 kW power, the minimum area of the solar collector required would be
Options A) 8.33m2 B) 16.66m2
C) 39.68m2 D) 79.36m2

Your Answer (Not Answered)
Correct Answer D

19 A fluid flow is represented by the velocity field

V
>
= ax

i
>
+ ay

j
>
where a is a constant. The equation of stream line passing through a point (1, 2) is
Options A) x-2y = 0 B) 2x + y = 0
C) 2x - y = 0 D) x + 2y = 0

Your Answer (Not Answered)
Correct Answer C

20 A welding operation is time-studied during which an operator was pace-rated as 120%. The operator took, on an average, 8 minutes for producing the weld-joint. If a total of 10% allowances are allowed for this operation, the expected standard production rate of the weld-joint (in units per 8 hour day) is
Options A) 45 B) 50
C) 55 D) 60

Your Answer (Not Answered)
Correct Answer

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A solar collector receiving solar radiation at the rate of 0.6 k W/m 2 transforms it to the internal energy of a fluid at an overall efficiency of 50%. The fluid heated to 350 K is used to run a heat engine which rejects heat at 313 K. If the heat engine is to deliver 2.5 kW power, the minimum area of the solar collector required would b
Options

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