Education and Career Forum

Dear sir I am a passout student of indo german tool room that gives advance diploma in tool and die making. for that please suggest me how and what subjects to prepare bhel supervisor trainee exam. it would be very nice to you if u please send me question papers.

thanks ,
Harsh Ranjan

theBHEL exam is divided into two sections-
1. aptitude test-in which you should study
Quantitative aptitude,reasoning ,logical thinking,english, general awareness
2. techanical test- in which the questions are from your subject
Elect/Electronics/Mech Engg.
All the questions are of qbjective type & there will be negative marking also.So try to be prepare yourself with a good command on the subject.Its better to refer your college books as the questions will be mostly from your engineering subjects.

hii..

Preparation for bhel supervisor trainee exam

the BHEL exam is divided into two sections-
1. aptitude test-in which you should study
Quantitative aptitude,reasoning ,logical thinking,english, general awareness
2. techanical test- in which the questions are from your subject
Elect/Electronics/Mech Engg.
All the questions are of Objective type & there will be negative marking also.So try to be prepare yourself with a good command on the subject.Its better to refer your college books as the questions will be mostly from your engineering subjects.

work hard and consentrate on ur fundamentakls..

good luck.

you can improve your standard and ability by attending the test and question on this web site, check it out friends it will be very help full, http://allinterview.com/Interview-Questions/Engineering.html

Basic portion is that from your first year till the third year, most important for instrumentation is that process control, control system ,lic and transducer. check it out this attachment .. IF YOU PREPARE DRDO QUESTION PAPER YOU CAN CLEAR THIS EASILY

I Forgot to say, aptitude is most important for this exam, it will come for around 30%, then other are technical .

could anyone pls tell me the important subject to prepare in mechanical???

How to prepare for eletronics can u provide me d question papers or some prescribed book

The exam consists of two parts. The first test will be an aptitude test. The test shall cover areas such as logical, quantitative, reasoning, general knowledge and English. Books for this are readily available in the market. The other test will cover areas depending on your choice i.e. electrical, electronics or mechanical. For this you need to be prepare well on the subjects you studied.

hello friend

see, bhel exam syllabus for engineer trainee syllabus is equivalent to gate syllabus.so it will be better to take gate syllabus as a bhel exam syllabus for engineer trainee.

you can get Gate syllabus in the given below sites

1.www.gateforum.com.

2.www.onestopgate.com.

all the best...............

sir,please send bhel supervisor trainess past question paper to may mail id as robert.robi89@gmail.com

I will the lot of question from Electronic work out every question

Semiconductor


1.
A silicon diode measures a low value of resistance with the meter leads in both positions. The trouble, if any, is

A. the diode is open.
B. the diode is shorted to ground.
C.
the diode is internally shorted.
D. the diode is working correctly.
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2.
Single-element semiconductors are characterized by atoms with ____ valence electrons.

A. 3
B.
4
C. 5
D. 2
E. none of the above
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3.
Under normal conditions a diode conducts current when it is

A. reverse-biased. B.
forward-biased.
C. avalanched. D. saturated.
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4.
A diode conducts when it is forward-biased, and the anode is connected to the ________ through a limiting resistor.

A.
positive supply
B. negative supply
C. cathode
D. anode
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5.
As the forward current through a silicon diode increases, the internal resistance

A. increases.
B.
decreases.
C. remains the same.


6.
The movement of free electrons in a conductor is called

A. voltage. B.
current.
C. recombination. D. equilibrium.
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7.
For a forward-biased diode, the barrier potential ________ as temperature increases.

A.
decreases
B. remains constant
C. increases
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8.
The wide end arrow on a schematic indicates the ________ of a diode.

A. ground
B. direction of electron flow
C. cathode
D.
anode
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9.
An n-type semiconductor material

A. is intrinsic.
B. has trivalent impurity atoms added.
C.
has pentavalent impurity atoms added.
D. requires no doping.
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10.
For a forward-biased diode, as temperature is ________, the forward current ________ for a given value of forward voltage.

A. decreased, increases
B.
increased, increases
C. increased, decreases
D. decreased, decreases

Best of luck, work out

Test 2 in Semiconductor

11.
Which statement best describes an insulator?

A. A material with many free electrons.
B. A material doped to have some free electrons.
C.
A material with few free electrons.
D. No description fits.
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12.
Effectively, how many valence electrons are there in each atom within a silicon crystal?

A. 2 B. 4
C.
8
D. 16
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13.
The boundary between p-type material and n-type material is called

A. a diode.
B. a reverse-biased diode.
C.
a pn junction.
D. a forward-biased diode.
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14.
You have an unknown type of diode in a circuit. You measure the voltage across it and find it to be 0.3 V. The diode might be

A. a silicon diode.
B.
a germanium diode.
C. a forward-biased silicon diode.
D. a reverse-biased germanium diode.
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15.
An ideal diode presents a(n) ________ when reversed-biased and a(n) ________ when forward-biased.

A.
open, short
B. short, open
C. open, open
D. short, short


6.
A reverse-biased diode has the ________ connected to the positive side of the source, and the ________ connected to the negative side of the source.

A.
cathode, anode
B. cathode, base
C. base, anode
D. anode, cathode
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17.
What types of impurity atoms are added to increase the number of conduction-band electrons in intrinsic silicon?

A. bivalent
B. octavalent
C.
pentavalent
D. trivalent
E. none of the above
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18.
What factor(s) do(es) the barrier potential of a pn junction depend on?

A. type of semiconductive material
B. the amount of doping
C. the temperature
D.
all of the above
E. type of semiconductive material and the amount of doping but not the temperature
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19.
An atom is made up of

A. protons.
B. neutrons.
C. electrons.
D.
all of the above


Best of luck, work out every one

Test 3


21.
There is a small amount of current across the barrier of a reverse-biased diode. This current is called

A. forward-bias current.
B. reverse breakdown current.
C. conventional current.
D.
reverse leakage current.
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22.
As the forward current through a silicon diode increases, the voltage across the diode

A. increases to a 0.7 V maximum.
B. decreases.
C.
is relatively constant.
D. decreases and then increases.
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23.
Doping of a semiconductor material means

A. that a glue-type substance is added to hold the material together.
B. that impurities are added to increase the resistance of the material.
C.
that impurities are added to decrease the resistance of the material.
D. that all impurities are removed to get pure silicon.
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24.
The forward voltage across a conducting silicon diode is about

A. 0.3 V.
B. 1.7 V.
C. –0.7 V.
D.
0.7 V.
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25.
The most common type of diode failure is a(n) ________.

A.
open
B. short
C. resistive D. [NIL]

26.
What occurs when a conduction-band electron loses energy and falls back into a hole in the valence band?

A. doping B.
recombination
C. generation D. [NIL]
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27.
The maximum number of electrons in each shell of an atom is

A. 2.
B.
2n2 where n is the number of the shell.
C. 4.
D. 8.
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28.
A silicon diode is forward-biased. You measure the voltage to ground from the anode at ________, and the voltage from the cathode to ground at ________.

A. 0 V, 0.3 V
B.
2.3 V, 1.6 V
C. 1.6 V, 2.3 V
D. 0.3 V, 0 V
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29.
The term bias in electronics usually means

A. the value of ac voltage in the signal.
B. the condition of current through a pn junction.
C.
the value of dc voltages for the device to operate properly.
D. the status of the diode.

work out every one, Best of luck

DIODE APPLICATION

1.
Determine the total discharge time for the capacitor in a clamper having C = 0.01 F and R = 500 k.

A. 5 ms
B.
25 ms
C. 2.5 ms
D. 50 ms
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2.
Which element dictates the maximum level of source voltage?



A. VZ
B.
IZM
C. IZ
D. None of the above
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3.
What type of diode circuit is used to clip off portions of signal voltages above or below certain levels?

A.
clipper or limiter
B. clamper
C. IC voltage regulator
D. none of the above
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4.
Each diode in a center-tapped full-wave rectifier is ________ -biased and conducts for ________ of the input cycle.

A. forward, 90º
B. reverse, 180º
C.
forward, 180º
D. reverse, 90º
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5.
What is the voltage measured from the negative terminal of C4 to the negative terminal of the transformer?



A. –10 V
B.
–20 V
C. 10 V
D. 20 V

6.
The output frequency of a full-wave rectifier is ________ the input frequency.

A. one-half
B. equal to
C.
twice
D. one-quarter
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7.
PIV is which of the following?

A. peak input voltage
B.
peak inverse voltage
C. peak immediate voltage
D. positive input voltage
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8.
Determine the peak value of the current through the load resistor.



A.
2.325 mA
B. 5 mA
C. 1.25 mA
D. 0 mA
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9.
Determine the peak value of the output waveform.



A. 25 V
B.
15 V
C. –25 V
D. –15 V
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10.
In a regulated supply, what term describes how much change occurs in the output voltage for a given change in the input voltage?

A. load regulation
B. voltage regulator
C.
line regulation
D. ripple voltage

Best of luck , check for all answer

Test 2

DIODE APPLICATION

11.
A short circuit has a ________ drop across its terminals, and the current is limited only by the surrounding network.

A. 5 V
B.
0 V
C. 1 V
D.
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12.
Determine the peak for both half cycles of the output waveform.



A.
16 V, –4 V
B. 16 V, 4 V
C. –16 V, 4 V
D. –16 V, –4 V
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13.
What is the peak inverse voltage across each diode in a voltage doubler?

A. Vm B.
2Vm
C. 0.5Vm D. 0.25Vm
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14.
What is the VRRM (PIV rating) for the 1N4001 rectifier diode?

A.
50 V
B. 100 V
C. 200 V
D. 400 V
E. none of the above
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15.
What type of diode circuit is used to add or restore a dc level to an electrical signal?

A. clipper or limiter
B.
clamper
C. IC voltage regulator
D. none of the above


16.
Determine ID2.



A. 6.061 mA
B. 0.7 mA
C.
3.393 mA
D. 3.571 mA
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17.
What is the logic function of this circuit?



A.
Positive logic AND gate
B. Positive logic OR gate
C. Negative logic AND gate
D. Negative logic OR gate
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18.
In a regulated supply, what term describes how much change occurs in the output voltage over a certain range of load current values, from minimum to maximum current?

A. line regulation
B. voltage regulator
C. current regulator
D.
load regulation
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19.
Determine the average value of the current through the load resistor.



A. 2.5 mA
B. 0 mA
C. 1.37 mA
D.
1.479 mA
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20.
What best describes the circuit?



A.
Full-wave rectifier
B. Half-wave rectifier
C. Clipper
D. Clamper

check it out, work out all of them

Test 3

21.
What is the PIV for each diode in a full-wave center-tapped rectifier? Note: Vp(out) = peak output voltage.

A. Vp(out) – 0.7 V
B. Vp(out) + 0.7 V
C. 2Vp(out) – 0.7 V
D.
2Vp(out) + 0.7 V
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22.
Determine ID2.



A. 29.40 mA
B. 30.30 mA
C.
14.70 mA
D. None of the above
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23.
Determine the current level if E = 15 V and R = 3 k.



A. 0 A
B.
4.76 mA
C. 5 mA
D. 5 A
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24.
Determine V2.



A. 3.201 V
B. 0 V
C. 4.3 V
D.
1.371 V
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25.
If the ac supply is 50 Hz, what will be the ripple frequency out of the full-wave rectifier?

A. 50 Hz
B. 60 Hz
C.
100 Hz
D. 120 Hz


26.
How many terminals do the 7800 series fixed positive voltage regulators have?

A. 2
B.
3
C. 4
D. 5
E. none of the above
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27.
An open circuit can have any voltage across its terminals, but the current is always ________.

A. 5 A
B.
0 A
C. 1 A
D.
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28.
Determine ID1.



A.
0 mA
B. 29.40 mA
C. 14.70 mA
D. 14.09 mA
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29.
Refer to the figure given below. Which diode arrangement will supply a negative output voltage?



A. a B. b
C.
c
D. d
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30.
A silicon diode in a half-wave rectifier has a barrier potential of 0.7 V. This has the effect of

A.
reducing the peak output voltage by 0.7 V.
B. increasing the peak output voltage by 0.7 V.
C. reducing the peak input voltage by 0.7 V.
D. no effect.

Best of luck, work out for all question

Test 4


31.
What best describes the circuit?



A. Full-wave rectifier
B. Half-wave rectifier
C.
Clipper
D. Clamper
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32.
Determine the value of the load resistor.



A. RL = 5 k
B.
RL = 5.5 k
C. RL = 6 k
D. None of the above
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33.
Use the information provided here to determine the value of IDQ.



A. 0 mA
B.
4.3 mA
C. 5 mA
D. 10 mA
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34.
If the ac supply is 60 Hz, what will be the ripple frequency out of the half-wave rectifier?

A. 30 Hz
B. 50 Hz
C.
60 Hz
D. 120 Hz
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35.
Calculate IL and IZ.



A. 2 mA, 0 mA
B. 4 mA, 2 mA
C. 2 mA, 2 mA
D.
2 mA, 4 mA



41.
The output frequency of a half-wave rectifier is ________ the input frequency.

A. one-half
B. twice
C.
equal to
D. none of the above
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42.
A diode is in the "________" state if the current established by the applied sources is such that its direction matches that of the arrow in the diode symbol, and VD ≥ 0.7 V for Si and VD ≥ 0.3 V for Ge.

A. off B.
on
C. neutral D. quiescent
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43.
Determine ID.



A. 0 mA
B.
1.893 mA
C. 2.036 mA
D. 2.143 mA
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44.
What best describes the circuit?



A. Full-wave rectifier
B.
Half-wave rectifier
C. Clipper
D. Clamper
View Answer Workspace Report Discuss in Forum
45.
In a voltage-multiplier circuit, the number of diodes is directly proportional to the multiplicative voltage factor.

A.
True
B. False

Best of luck, do well

Test 6


46.
Rectifiers are commonly used in battery chargers.

A.
True
B. False
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47.
List the categories of clippers.

A. Series
B. Parallel
C.
Series and parallel
D. None of the above
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48.
A silicon diode has a voltage to ground of –117 V from the anode. The voltage to ground from the cathode is –117.7 V. The diode is

A. open. B. shorted.
C.
forward-biased.
D. reverse-biased.
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49.
Which diode arrangement will supply a positive output voltage?



A.
a
B. b
C. c D. d
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50.
What is the logic function of this circuit?



A. Positive logic AND gate
B.
Positive logic OR gate
C. Negative logic AND gate
D. Negative logic OR gate

51.
Determine the current through each diode if E1 = E2 = 0 V.



A.
4.65 mA
B. 9.3 mA
C. 18.6 mA
D. 0.7 mA
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52.
Refer to the figure given below. If the voltmeter across the transformer reads 0 V, the probable trouble, if any, would be



A. one of the diodes is open.
B. a diode is shorted.
C.
an open transformer secondary.
D. the filter capacitor is shorted.
E. no trouble exists.
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53.
Determine the voltage across the resistor.



A.
0 V
B. 0.09 V
C. 0.2 V
D. 0.44 V
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54.
With this Zener diode in its "on state," what is the level of IZ for the maximum load resistance?



A. 0 mA
B. Undefined
C. Equal to IRL
D.
IZM
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55.
In a voltage regulator network with fixed RL and R, what element dictates the minimum level of source voltage?

A.
VZ
B. IZ
C. IZM
D. None of the above

Best of luck do well

hello friend,


it's good hearing yor are Preparing for bhel supervisor trainee exam
first of all you know about the exam:
BHEL exam is divided into 2 sections:
1. aptitude test-in which you should study
Quantitative aptitude,reasoning ,logical thinking,english, general awareness
2. techanical test- in which the questions are from your subject
Elect/Electronics/Mech Engg.
All the questions are of Objective type & mark reduction is also there for wrong answer.
you can also refer your text books .



good luck.

hii
Preparation for bhel supervisor trainee exam
theBHEL exam is divided into two sections-
1. aptitude test-in which you should study
Quantitative aptitude,reasoning ,logical thinking,english, general awareness
2. techanical test- in which the questions are from your subject
Elect/Electronics/Mech Engg.
All the questions are of qbjective type & there will be negative marking alsoIts better to refer your college books as the questions will be mostly from your engineering subjects.

good luck.

i need syllabus and book names for hal diploma trainee exam pls send ..pls...prahlad sit tumkur