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

A changing magnetic flux creates around itself

Question # 2

The r.m.s. value of alternating current is equal to its maximum value at angle of

Question # 3

Which of the following diodes can operate in the reverse biased condition

Question # 4

Electromagnetic waves transmit energy equal to

Question # 5

For the normal operation of the transistor, its

Question # 6

A p-n junction is formed when a crystal of silicon is growth in such a way that its one half is doped with trivalent impurity and the other half with a impurity from

Question # 7

The waveform of alternating voltage is a:

Question # 8

Which one of the following Electro-magnetic wave have the highest frequency and shortest wave-length

Question # 9

A resonance curve for RLC series circuit is a plot of frequency versus

Question # 10

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

Question # 11

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

Question # 12

In RLC series circuit, resonance occurs when

Question # 13

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

Question # 14

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

Question # 15

If we connect a A.C. volt meter to read A.C. voltage, It would read its:

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The alternative voltage of current is actually measured by:
A. Its RMS value
B. Square root of its mean square value
C. Instantaneous value
D. Peak value
2 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
3 At resonance, the impedance of RLC series circuit is
A. Maximum
B. Zero
C. Minimum
D. Determinate
4 Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:
A. Peak value
B. RMS value
C. Instantaneous value
D. Peak-to-peak value
5 The open loop gain of OP-AMP is of the order of
A. 102
B. 103
C. 104
D. 105
6 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
7 For normal operation of transistor, the batteries
A. VCCis of much lower value than VBB
B. VCCis of much higher value than VBB
C. VCC is equal toVBB
D. none of these
8 Electromagnetic waves transmit energy equal to
A. 1/2 mv2
B. moc2
C. hf/c
D. hf
9 The closed loop gain of the non-inverting amplifier is given by
A. G = R2/R1
B. G = -R2/R1
C. G = 1 - R2/R1
D. G = 1 + T2/R1
10 Alternating current can induce voltage because it has a
A. High peak value
B. Varying magnetic field
C. Stronger field than direct curren
D. Constant magnetic field

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  • Iiqra Fatima

    Iiqra Fatima

    25 May 2018

    You should let us practice difficult mcqs ..These are too easy for ECAT level....Thanku

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