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Latest BEL Fixed Tenure Engineer Exam Question (Objective Questions), MCQ in English

Subjects : General Awareness, Technical Knowledge (Electronics)

Question Bank BEL Fixed Tenure Engineer Exam (Electronics) - English
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General Awareness

Question 1Single Answer
I go to Madurai by —– Vaigai Express
  1. A
    a
  2. B
    an
  3. C
    some
  4. D
    the
Question 2Single Answer
Have the car stolen!
  1. A
    Steal the car
  2. B
    You should have the stolen car
  3. C
    Get someone to steal the car
  4. D
    They have stolen the car
Question 3Single Answer
Passage :
Direction :  Question below has two blanks, each blank indicting that some thing has been omitted. Choose the word for each blank which best fits the meaning of the sentence as a whole.
The Finance Department has ……………a centralized online databank system for all statutory government bodies to …………an eye on their assets and liabilities.
  1. A
     presented , stay
  2. B
    introduced , keep
  3. C
    announce , make
  4. D
    created , let
  5. E
    proclaimed , hold
Question 4Single Answer
Passage :
Direction : The five items in this section consists of a word or group of words followed by four words as (a), (b), (c) and (d). Select the word which is nearly opposite to the meaning of the original word or group of words and mark your response as (a), (b), (c) and (d), as the case may be, in your Answer Sheet.
Assets
  1. A
    liabilities
  2. B
    responsibilities
  3. C
    estates
  4. D
    profits
Question 5Single Answer
How many such pairs of letters are there in the word ‘CLEANLINESS’ each of the which has as many letters between them in the word as they have in the English alphabet, in the same sequence?
  1. A
    Two
  2. B
    Three
  3. C
    Five
  4. D
    Four
  5. E
    None of these
Question 6Single Answer
Team A has scored more goals than Team B
Team C has scored fewer goals than Team B
Team A has scored fewer goals than Team C .
If the first two statements are true, the third statement is
  1. A
    True
  2. B
    False
  3. C
    Uncertain
  4. D
    None
Question 7Single Answer
Passage :
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z .
Which letter in this alphabet is the eighth letter to the right of the letter and which is tenth letter to the left of the last but one letter of the alphabet ?
  1. A
    X
  2. B
    W
  3. C
    I
  4. D
    H
Question 8Single Answer
Passage :
Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)
If the third alphabet of each of the words is changed to the next alphabet in the English alphabetical series, which of the following will form a meaningful English word?
  1. A
    SUM
  2. B
    BIG
  3. C
    Both BIG and THE
  4. D
    FOR
  5. E
    Both FOR and BIG
Question 9Single Answer
The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is:__________ ?
  1. A
    51:52
  2. B
    52:53
  3. C
    51:53
  4. D
    52:55
Question 10Single Answer
Which of the following numbers is irrational ?
  1. A
    √49
  2. B
    0.125
  3. C
    √2
  4. D
    22/7
Question 11Single Answer
Passage :
information given below and answer the question that follow.
The result of an exam is given below. Out of 1000 students who appeared
(i) 658 failed in Physics
(ii) 166 failed in Physics and Chemistry
(iii) 372 failed in Chemistry, 434 failed in Physics and Maths
(iv) 590 failed in Maths, 126 failed in Maths & Chemistry
Find the number of people who failed in (assuming that none is passed in all subjects.

We have the following equations:
a+ b + c + d + e + f + g = 1000
a + b + d + e = 658, b + d = 166
b + d + c + f = 372
d + e = 434 as in the figure.
d + e + f + g = 590, d + f = 126. Find the values
Chemistry but not in Physics.
  1. A
    318
  2. B
    198
  3. C
    213 
  4. D
    206
Question 12Single Answer
Passage :
Direction: information given below and answer the question that follow.
The result of an exam is given below. Out of 1000 students who appeared
(i) 658 failed in Physics
(ii) 166 failed in Physics and Chemistry
(iii) 372 failed in Chemistry, 434 failed in Physics and Maths
(iv) 590 failed in Maths, 126 failed in Maths & Chemistry
Find the number of people who failed in (assuming that none is passed in all subjects.

We have the following equations:
a+ b + c + d + e + f + g = 1000
a + b + d + e = 658, b + d = 166
b + d + c + f = 372
d + e = 434 as in the figure.
d + e + f + g = 590, d + f = 126. Find the values
Physics or Maths but not in Chemistry.
  1. A
    558   
  2. B
    718
  3. C
    628  
  4. D
    None of these
Question 13Single Answer
When was the Constituent Assembly of India formed?
  1. A
    1946
  2. B
    1947
  3. C
    1948
  4. D
    1950
Question 14Single Answer
Which is the longest river in India?
  1. A
    Yamuna
  2. B
    Ganges
  3. C
    Brahmaputra
  4. D
    Godavari
Question 15Single Answer
Which city hosted the launch of Capital Radio in 1973?
  1. A
    Manchester
  2. B
    London
  3. C
    Birmingham
  4. D
    Glasgow

Technical Knowledge (Electronics)

Question 16Single Answer
Which one of the following helps experimental confirmation of the Crystalline state of matter?
  1. A
    Shock compression
  2. B
    Photo emission
  3. C
    Conductivity measurements
  4. D
    X-ray diffraction
Question 17Single Answer
The electrical conductivity of pure semiconductor is:
  1. A
    Proportional to temperature
  2. B
    Increases exponentially with temperature
  3. C
    Decreases exponentially with temperature
  4. D
    Not altered with temperature
Question 18Single Answer
Consider the following statements pertaining to the resistance of a conductor:
1. Resistance can be simply defined as the ratio of voltage across the conductor to the current through the conductor. This is, in fact, Georg Ohm’s law.
2. Resistance is a function of voltage and current.
3. Resistance is a function of conductor geometry and its conductivity
Which of the above statements are correct?
  1. A
    1 and 2 only
  2. B
    2 and 3 only
  3. C
    1 and 3 only
  4. D
    1, 2 and 3
Question 19Single Answer
The ratio of ionic radii of Cations i.e.and that of Anions i.e.for stable and unstable ceramic crystal structure, is:
  1. A
    Less than unity
  2. B
    Greater than unity
  3. C
    Unity
  4. D
    Either lesser or greater than unity
Question 20Single Answer
Which one of the following statements is correct?
  1. A
    For insulators the band-gap is narrow as compared to semiconductors
  2. B
    For insulators the band-gap is relatively wide whereas for semiconductors it is narrow
  3. C
    The band-gap is narrow in width for both the insulators and conductors
  4. D
    The band-gap is equally wide for both conductors and semiconductors
Question 21Single Answer
In an extrinsic semiconductor the conductivity significantly depends upon:
  1. A
    Majority charge carriers generated due to impurity doping
  2. B
    Minority charge carriers generated due to thermal agitation
  3. C
    Majority charge carriers generated due to thermal agitation
  4. D
    Minority charge carriers generated due to impurity doping
Question 22Single Answer
In some substances when an electric field is applied the substance become polarized. The electrons and nucleii assume new geometrical positions and the mechanical dimensions are altered. This phenomenon is called:
  1. A
    Electrostriction
  2. B
    Hall-Effect
  3. C
    Polarization
  4. D
    Magnetization
Question 23Single Answer
In ferromagnetic materials, the net magnetic moment created due to magnetization by an applied field as:
  1. A
    Normal to the applied field
  2. B
    Adds to the applied field
  3. C
    In line with magneto motive force
  4. D
    Subtracts from the applied field
Question 24Single Answer
At what temperatures domains lose their ferromagnetic properties?
  1. A
    Above ferromagnetic Curie temperature
  2. B
    Below paramagnetic Curie temperature
  3. C
    Above 4
  4. D
    At room temperature
Question 25Single Answer
Which of the following materials does not have paramagnetic properties?
1. Rare earth elements (with incomplete shell)
2. Transition elements
3. Magnesium oxide
Select the correct answer from the codes given below:
  1. A
    1 only
  2. B
    2 only
  3. C
    3 only
  4. D
    1 and 2
Question 26Single Answer
Which of the following regions of operation are mainly responsible for heating of the transistor under switching operation?
1. Saturation region
2. Cut-off region
3. Transition from saturation to cut-off
4. Transition from cut-off to saturation
Select the correct answer using the codes given below
  1. A
    1, 2 and 4 only
  2. B
    1, 3 and 4 only
  3. C
    2 and 3 only
  4. D
    1 and 3 only
Question 27Single Answer
In a sinusoidal oscillator, sustained oscillations will be produced only if the loop gain (at the oscillation frequency) is
  1. A
    Less than unity but not zero
  2. B
    Zero
  3. C
    Unity
  4. D
    Greater than unity
Question 28Single Answer
The Class-B push-pull amplifier is an efficient two –transistor circuit, in which the two transistors operate in the following way:
  1. A
    Both transistors operate in the active region throughout the negative ac cycle
  2. B
    Both transistors operate in the active region for more than half-cycle but less than a whole cycle
  3. C
    One transistor conducts during the positive half-cycle and the other during the negative half-cycle
  4. D
    Full supply voltage appears across each of the transistors
Question 29Single Answer
PAC stands for______.
  1. A
    Permanent angle converter
  2. B
    Phase angle converter
  3. C
    Phase angle components
  4. D
    Phase angle capacitor
  5. E
    None of these
Question 30Single Answer
For normal operation of a transistor
  1. A
    Forward bias the emitter diode and reverse bias the collector diode
  2. B
    Forward bias the emitter diode as well as the collector diode
  3. C
    Reverse bias the emitter diode as well as the collector diode
  4. D
    Reverse bias the emitter diode and forward bias the collector diode
Question 31Single Answer
Consider the following statements regarding linear power supply:
1. It requires low frequency transformer.
2. It requires high frequency transformer.
3. The transistor works in active region.
Which of the above statements is/are correct?
  1. A
    1 only
  2. B
    2 and 3 only
  3. C
    1 and 3 only
  4. D
    3 only
Question 32Single Answer
A full wave rectifier connected to the output terminals of the mains transformer produces an RMS voltage of 18 V across the secondary. The no-load voltage across the secondary of the transformer is
  1. A
    1.62 V
  2. B
    16.2 V
  3. C
    61.2 V
  4. D
    6.12 V
Question 33Single Answer
MICR stands for______.
  1. A
    Magnetic Ink Chart Receipt
  2. B
    Magnetic Ink Character Recognition
  3. C
    Magnetic Ink Chart Recognition
  4. D
    Magnetic Ink capacitor Reverse
  5. E
    None of these
Question 34Single Answer
In an Op-Amp, if the feedback voltage is reduced by connecting a voltage divider at the output, which of the following will happen?
1. Input impedance increases
2. Output impedance increases
3. Overall gain increases
Which of the above statements is/are correct?
  1. A
    1 only
  2. B
    2 only
  3. C
    3 only
  4. D
    1, 2 and 3
Question 35Single Answer
The transient response rise time (unity gain) of an Op-Amp is 0.05s.The small signal bandwidth is
  1. A
    7 kHz
  2. B
    20 kHz
  3. C
    7 MHz
  4. D
    20 MHz
Question 36Single Answer
Consider the following statements:
The output of a linear circuit, driven with a sine wave at a frequency f, is itself a sine wave
1. at the same frequency
2. with chance of changed amplitude
3. with chances of changed amplitude and phase
Which of the above statements is/are correct? 
  1. A
    1 and 2
  2. B
    1 only
  3. C
    1 and 3
  4. D
    2 only 
Question 37Single Answer
Consider the following statements:
The main contribution to photo conduction is by
1. the generation of electron and hole pair by a photon
2. a donor electron jumping into the conduction band because of a photon’s energy
3. a valence electron jumping into an acceptor state because of a photon’s energy Which of the above statements is/are correct? 
  1. A
    1 only
  2. B
    2 only
  3. C
    3 only
  4. D
    1, 2 and 3
Question 38Single Answer
Thermal runaway is not possible in FET because as the temperature of the FET increase
  1. A
    mobility decreases
  2. B
     trans-conductance increases
  3. C
    drain current increases
  4. D
    trans-conductance decreases
Question 39Single Answer
For the same network, with 6 V DC connected at port A, 1 Ω connected at port B draws 7/3 A. if 8 V DC is connected to port A, the open circuit voltage at port B is
  1. A
    6 V
  2. B
    7 V
  3. C
    8 V
  4. D
    9 V
Question 40Single Answer
A signal may have frequency components which lie in the range of 0.001 Hz to 10 Hz. Which one of the following types of couplings should be chosen in a multistage amplifier designed to amplify the signal? 
  1. A
    Capacitor coupling
  2. B
    Direct coupling
  3. C
    Transformer coupling
  4. D
    Double-tuned transformer coupling
Question 41Single Answer
If an input impedance of op-amp is finite, then which one of the following statements related to virtual ground is correct ? 
  1. A
    Virtual ground condition may exist.
  2. B
    Virtual ground condition cannot exist
  3. C
    In case of op-amp, virtual ground condition always exists.
  4. D
    Cannot make a valid declaration 
Question 42Single Answer
Hysteresis is desirable in a Schmitt-trigger because 
  1. A
    energy is to be stored/discharged in parasitic capacitances
  2. B
    effects of temperature variations would be compensated
  3. C
    devices in the circuit should be allowed time for saturating and de-saturation
  4. D
    it would prevent noise from causing false triggering 
Question 43Single Answer
In a photoconductive cell the resistance, of the semiconductor material varies with intensity of incident light. 
  1. A
    directly
  2. B
    inversely 
  3. C
    exponentially
  4. D
    logarithmically 
Question 44Single Answer
In graded index multimode optical fiber the refractive index of the core is
  1. A
    uniform across its radial distance except for the cladding
  2. B
    maximum at the fiber axis and decreased stepwise towards the cladding
  3. C
    maximum at the fiber axis and decreases gradually towards the cladding.
  4. D
    maximum at the fiber axis and increases stepwise towards the cladding
Question 45Single Answer
Consider the following factors:
1. Number of turns of the coil
2. Length of the coil
3. Area of cross-section of the coil
4. Permeability of the core
On which of the above factors does inductance, depend?
  1. A
    1, 2 and 3 only
  2. B
    1, 3 and 4 only
  3. C
    1, 2, 3 and 4
  4. D
    2 and 4 only 
Question 46Single Answer
At temperature of 298 Kelvin, Silicon is not suitable for most-electronic applications, due to small amount of conductivity. This can be altered by
  1. A
    Gettering
  2. B
    Doping
  3. C
    Squeezing
  4. D
    Sintering
Question 47Single Answer
By doping Germanium with Gallium, the types of semi-conductors formed are
1. N type
2. P type
3. Intrinsic
4. Extrinsic
  1. A
    1 and 4
  2. B
    2 and 4
  3. C
    1 and 3
  4. D
    2 and 3
Question 48Single Answer
An n-type of silicon can be formed by adding impurity of:
1. Phosphorous
2. Arsenic
3. Boron
4. Aluminum 
Which of the above are correct ?
  1. A
    1 and 2
  2. B
    2 and 3
  3. C
    3 and 4
  4. D
    1 and 4
Question 49Single Answer
According to Einstein’s relationship for a semiconductor, the ratio of diffusion constant to the mobility of the charge carriers is
  1. A
    Variable and is twice the volt equivalent of the temperature
  2. B
    Constant and is equal to the volt equivalent of the temperature
  3. C
    Equal to two and is twice the volt equivalent of the temperature
  4. D
    Equal to one and is equal to the volt equivalent of the temperature
Question 50Single Answer
Swept-out voltage in PIN diode happens when PIN diode is
  1. A
    Forward biased and the thickness of the depletion layer decreases till I-region becomes free of mobile carriers
  2. B
    Reverse biased and the thickness of the depletion layer increases till I-region becomes free of mobile carriers
  3. C
    Forward biased and the thickness of the depletion layer increases till I-region becomes free of mobile carriers
  4. D
    Reverse biased and the thickness of the depletion layer decreases till I-region becomes free of mobile carriers
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