ECAT Pre Computer Science Chapter 16 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 16 Alternating Current

Try The MCQ's Test For ECAT Physics Chapter 16 Alternating Current

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ECAT Physics Chapter 16 Alternating Current

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Question # 1

The R1= infinity and R2= 0, then the gain of non-inverting amplifier is

Question # 2

The length of rotating vector (on a certain scale) represents the:

Question # 3

Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:

Question # 4

The power factor of resonant series circuit is

Question # 5

At resonance frequency the impedance of parallel resonance circuit is

Question # 6

The open loop gain of OP-AMP is of the order of

Question # 7

A sinusoidally alternating voltage or current can be graphically represented by a:

Question # 8

The basic circuit element in D.C. circuit is:

Question # 9

Peak value of alternative current is:

Question # 10

Which of the following has a great concentration of impurity

Question # 11

If we connected the ordinary DC ammeter to measure alternating current, it would measure its:

Question # 12

When the emitter-base junction of a transistor is reverse biased, collector current

Question # 13

The Instantaneous value of alternative current maybe:

Question # 14

Most OP-AMP operates with

Question # 15

The magnitude of alternative voltage V:

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The bridge circuit of full wave rectification uses
A. one diode
B. two diode
C. three diode
D. four diode
2 Most OP-AMP operates with
A. + 6 V supply
B. + 10 V supply
C. + 12 V supply
D. + 24 V supply
3 In RLC series circuit, resonance occurs when
A. XL > Xc
B. XL < Xc
C. XL = Xc
D. None of these
4 For the normal operation of the transistor, its
A. emitter-base and collector base junctions are forward biased
B. emitter-base junction is reversed biased and collector base junction is forward biased
C. emitter-base junction is forward biased and collector-base junction is reverse biased
D. any one of these
5 In n-p-n transistor, emitter base junction is kept
A. reversed
B. forward biased
C. may be reversed or may be forward biased
D. none of these
6 The emitter-base junction of a transistor is forward-biased and collector-base junction is reverse-biased. If the base current is increased, its
A. Icwill decrease
B. VCEwill increase
C. ICwill increase
D. VCCwill increase
7 The input resistance of the OP-AMP is the resistance between the
A. (-) input and output
B. (+) input and output
C. (-) and (+) inputs
D. between any inputs
8 Which of the following diode is used to derive the current in external circuit when light is incident in the circuit
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. none of these
9 When a transistor is used as a switch the circuit in which the current is to be switched OFF and ON, is connected between the
A. base and emitter
B. collector and emitter
C. base and collector
D. any one of these
10 A diode characteristic curve is a plot between
A. current and time
B. voltage and time
C. voltage and current
D. forward voltage and reversed voltage

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