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

Question # 2

For normal operation of transistor, the batteries

Question # 3

The time interval during which the Voltage source changes its polarity once is known as:

Question # 4

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

Question # 5

Average value of A.C voltage during one cycle is

Question # 6

A diode characteristic curve is a plot between

Question # 7

The basic circuit elements of A.C circuit are

Question # 8

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

Question # 9

In half wave rectification

Question # 10

The bridge circuit of full wave rectification uses

Question # 11

The value of output resistance of OP-AMOP is of the order of

Question # 12

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

Question # 13

The highest value reached by the voltage or current:

Question # 14

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

Question # 15

The magnitude of alternative voltage V:

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 When the emitter-base junction of a transistor is reverse biased, collector current
A. Reverses
B. Increases
C. Decreases
D. Stops
2 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
3 At resonance, the phase angle for RLC series resonance circuit equals
A. 0°
B. 90°
C. 180°
D. 270°
4 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
5 Average value of A.C voltage during one cycle is
A. 1
B. Zero
C. Maximum
D. Variable
6 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
7 If we connected the ordinary DC ammeter to measure alternating current, it would measure its:
A. Instantaneous value
B. RMS value
C. Value averaged over a cycle
D. Either (B) or (C)
8 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
9 The input resistance of the OP-AMP is the resistance between the
A. (-) input and output
B. (+) input and output
C. (-) and (+) inputs
D. between any inputs
10 The magnitude of alternative voltage V:
A. Always increase
B. Always decrease
C. Remains constant
D. Does not remain constant

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