Test: Basic Electronics - 2


25 Questions MCQ Test Electrical Engineering SSC JE (Technical) | Test: Basic Electronics - 2


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QUESTION: 1

Compared to the bipolar junction transistor, a JFET
1. Has a larger gain bandwidth production.
2. Is less noisy
3. Has less input resistance.
4. Has current flow due to only majority carries.
 

Solution:
QUESTION: 2

The small value to drain to source voltage, JFET behaves like a

Solution:
QUESTION: 3

The shape of the transfer characteristic of JFET is very nearly a

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QUESTION: 4

In a JFET, drain current is primarily controlled by

Solution:
QUESTION: 5

JFET has main drawback of

Solution:
QUESTION: 6

Consider the following statements:
1. BJT is a current controlled device with a high input impedance and high gain bandwidth
2. FET is a voltage controlled device with high input impedance and low gain bandwidth
3. UJT is a negative resistance device and can be used as an oscillator.
4. BJT, FET and UJT can all be used for amplification.
 Which of the statement given above are correct?

Solution:
QUESTION: 7

A Darlington amplifier has a

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QUESTION: 8

The Darlington pair is mainly used for

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QUESTION: 9

The BJT amplifier which offers highest input impedance and least voltage gain is

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QUESTION: 10

The Barkhausen criterion for sustained oscillations is given by

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QUESTION: 11

Oscillators use following feedback.
 

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QUESTION: 12

Most important advantage of an IC is its

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QUESTION: 13

Ultraviolet radiation is used in IC fabrication process for

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QUESTION: 14

Why is silicon dioxide (SiO2) layer used in ICs ?

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QUESTION: 15

An ideal op-amp is an ideal

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QUESTION: 16

The ideal op-amp has the following characteristics.

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QUESTION: 17

An op-amp has a common mode gain of 0.01 and a differential mode gain of 105. Its CMRR would be

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QUESTION: 18

Which one of the following causes phase shift through causes phase shift through an op-amp?

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QUESTION: 19

In the circuit shown in the figure, the value of output 'V0' is

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QUESTION: 20

For the circuit shown in figure. given by the output voltage V0 is

 

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QUESTION: 21

A sinusoidal waveform can be converted to a square waveform by

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QUESTION: 22

Noise on the input of the comparator can cause the output to

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QUESTION: 23

The zero level detector is one application of a

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QUESTION: 24

How are the zener diodes placed internally in MOSFETs so as to provide defence from the hazardous consequences of stray voltages? 

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QUESTION: 25

A device having characteristies very close to that of an ideal voltage source is

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