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

If the value of C in a series RLC circuit is increased, the resonant frequency

Question # 2

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

Question # 3

An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current

Question # 4

In series RC circuit when R=Xc, then the phase angle is

Question # 5

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

Question # 6

During the positive half-cycle in the half-wave rectification,the diode

Question # 7

Electromagnetic waves transmit energy equal to

Question # 8

The basic circuit element in A.C. circuits are:

Question # 9

During each cycle, alternating voltage reaches a peak value

Question # 10

At resonance, the impedance of RLC series circuit is

Question # 11

At resonance frequency the impedance of parallel resonance circuit is

Question # 12

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

Question # 13

The most common source of alternating voltage is:

Question # 14

An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is

Question # 15

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

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 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
2 OP-AMP has the following input terminals
A. one
B. two
C. three
D. four
3 Which of the following diodes can operate in the reverse biased condition
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. none of these
4 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
5 Which one of the following is correct?
A. Vo= 1.414 Vrms
B. Iams= 1.414 Io
C. VO = 10.70 Vrms
D. Both a and b
6 The power factor of resonant series circuit is
A. 1
B. 0
C. -1
D. 0.5
7 In series RC circuit when R=Xc, then the phase angle is
A. 0°
B. 90°
C. 70°
D. 45°
8 In RLC series circuit, resonance occurs when
A. XL > Xc
B. XL < Xc
C. XL = Xc
D. None of these
9 In a transistor, if the central region is n-type, then this type of transistor is known as
A. n-p-n transistor
B. p-n-p transistor
C. either of these
D. none of these
10 Electromagnetic waves transmit energy equal to
A. 1/2 mv2
B. moc2
C. hf/c
D. hf

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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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