ECAT Pre Engineering Physics Chapter 16 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 16 Alternating Current

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

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Physics ECAT Pre Engineering Chapter 16 Alternating Current

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Question # 1

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

Question # 2

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

Question # 3

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

Question # 4

The basic circuit elements of A.C circuit are

Question # 5

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

Question # 6

Conversion of alternating current into direct current is called

Question # 7

The value of the potential difference across the depletion region for the case of germanium is

Question # 8

For the normal operation of the transistor, its

Question # 9

In RLC series circuit, resonance occurs when

Question # 10

Alternating current is produced by a voltage source which polarity:

Question # 11

Electromagnetic waves transmit energy equal to

Question # 12

Which of the following diode is used for the detection of light

Question # 13

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

Question # 14

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

Question # 15

Chock consumes externally small

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 Nowadays, Most of the electric energy is produced by the A.C. generators using:
A. Hydal water
B. Geothermal energy
C. Solar energy
D. Biomass
2 In describing functions of digital systems, a closed switch will be shown as
A. 0
B. 1
C. low
D. any one of these
3 A sinusoidally alternating voltage or current can be graphically represented by a:
A. Vector
B. Rotating vector
C. Clockwise vector
D. Anticlockwise voltage vector
4 During the negative half-cycle of the half-wave rectification, the diode
A. does not conduct
B. conducts
C. either of these
D. none of these
5 At resonance frequency the impedance of parallel resonance circuit is
A. Maximum
B. Minimum
C. Zero
D. None of the above
6 The wave form of alternating voltage is the graph between:
A. Voltage across X-axis and time across y-axis
B. Current and time
C. Voltage along y-axis and time along x-axis
D. Voltage and current
7 The R1= infinity and R2= 0, then the gain of non-inverting amplifier is
A. zero
B. infinity
C. one
D. any one of these
8 The most common source of alternating voltage is:
A. Motor
B. Transformer
C. AC genrator
D. Both (A) and (C)
9 The Instantaneous value of alternative current maybe:
A. The same as its RMS value
B. Greater than its Rms value
C. The same as its peak value
D. Any of these
10 At resonance, the impedance of RLC series circuit is
A. Maximum
B. Zero
C. Minimum
D. Determinate

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