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

Mathematical manipulation of the two quantized states can be best carried if they are represented by

Question # 2

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

Question # 3

When either L or C is increased, the resonant frequency of the RLC series circuit

Question # 4

In RLC series circuit, resonance occurs when

Question # 5

At resonance, the phase angle for RLC series resonance circuit equals

Question # 6

The amplifier which us used to perform mathematical operations electronically is known as

Question # 7

The impedance of RLC series resonance circuit at resonant frequency is

Question # 8

Most OP-AMP operates with

Question # 9

The highest value reached by the voltage or current:

Question # 10

The input resistance of the OP-AMP is the resistance between the

Question # 11

The output voltage of half wave rectification is in the form of

Question # 12

A signal appears after amplification, at the output terminal with a phase shift of 180° , if it is applied at

Question # 13

During the negative half-cycle of the half-wave rectification, the diode

Question # 14

Nowadays, Most of the electric energy is produced by the A.C. generators using:

Question # 15

In describing functions of digital systems, a closed switch will be shown as

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The amplifier which us used to perform mathematical operations electronically is known as
A. calculator
B. OP-AMP
C. computer
D. any one of them
2 The open loop gain of OP-AMP is of the order of
A. 102
B. 103
C. 104
D. 105
3 The output voltage of half wave rectification is in the form of
A. a smooth curve
B. a smooth wave
C. pulses
D. all of the above
4 When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency
A. 9.4 kHz
B. 940 kHz
C. 94 kHz
D. None of these
5 In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
6 Average value of A.C voltage during one cycle is
A. 1
B. Zero
C. Maximum
D. Variable
7 The value of the potential difference across the depletion region for the case of germanium is
A. 0.3 V
B. 0.5 V
C. 0.7 V
D. 0.9 V
8 During the positive half-cycle in the half-wave rectification,the diode
A. does not conduct
B. conducts
C. either of these
D. neither of these
9 In a normally biased n-p-n transistor, an electron c current IEflows from the
A. emitter into the base
B. collector into the base
C. base into collector
D. none of these
10 In describing functions of digital systems, a closed switch will be shown as
A. 0
B. 1
C. low
D. any one of these

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