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

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

Question # 2

In a transistor, if the central region is n-type, then this type of transistor is known as

Question # 3

A signal is amplified at the output without any change of phase, if it is applied at the

Question # 4

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

Question # 5

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

Question # 6

A digital system deals with quantities or variables which have

Question # 7

Electromagnetic waves transmit energy equal to

Question # 8

The value of the input resistance of OP-AMP is of the order of

Question # 9

In n-p-n transistor, emitter base junction is kept

Question # 10

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

Question # 11

In a transistor, the central region is called

Question # 12

Which one of the following waves belongs to electromagnetic spectrum

Question # 13

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

Question # 14

An A.C varies as a function of

Question # 15

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

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 A sinusoidally alternating voltage or current can be graphically represented by a:
A. Vector
B. Rotating vector
C. Clockwise vector
D. Anticlockwise voltage vector
2 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
3 The waveform of alternating voltage is a:
A. Square
B. Rectangular
C. Saw-tooth
D. Sinusoidal
4 The magnitude of alternative voltage V:
A. Always increase
B. Always decrease
C. Remains constant
D. Does not remain constant
5 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
6 When the emitter-base junction of a transistor is reverse biased, collector current
A. Reverses
B. Increases
C. Decreases
D. Stops
7 A resonance curve for RLC series circuit is a plot of frequency versus
A. Voltage
B. Current
C. Impedance
D. Reactance
8 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
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 Conversion of alternating current into direct current is called
A. amplification
B. rectification
C. conduction
D. polarization

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