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

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

Question # 2

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

Question # 3

The sum of positive and negative peak values is called:

Question # 4

The magnitude of alternative voltage V:

Question # 5

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

Question # 6

Peak value of alternative current is:

Question # 7

A digital system deals with quantities or variables which have

Question # 8

Average value of A.C voltage during one cycle is

Question # 9

In frequency modulation (FM), the carrier waves amplitude

Question # 10

For the normal operation of the transistor, its

Question # 11

Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is

Question # 12

The closed loop gain of the non-inverting amplifier is given by

Question # 13

Mathematical manipulation of the two quantized states can be best carried if they are represented by

Question # 14

In half wave rectification

Question # 15

Alternating current can be transmitted:

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 At resonance, the impedance of RLC series circuit is
A. Maximum
B. Zero
C. Minimum
D. Determinate
2 Average value of A.C voltage during one cycle is
A. 1
B. Zero
C. Maximum
D. Variable
3 Transmitting antenna emits
A. Magnetic waves
B. Electric waves
C. Electromagnetic waves
D. Sound waves
4 Alternating current is produced by a voltage source which polarity:
A. Remains the same
B. Reverse after period T
C. Keeps on reversing with time
D. Reverse after every time interval T/2
5 Electromagnetic waves transmit energy equal to
A. 1/2 mv2
B. moc2
C. hf/c
D. hf
6 To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance
A. 5.07 pF
B. 50 pF
C. 0.507 pF
D. 507 pF
7 The most common source of alternating voltage is:
A. Motor
B. Transformer
C. AC genrator
D. Both (A) and (C)
8 At resonance, the phase angle for RLC series resonance circuit equals
A. 0°
B. 90°
C. 180°
D. 270°
9 When the pn-junction is forward biased. the current flows through it is of the order of
A. mili-amperes
B. amperes
C. nano-amperes
D. micro-amperes
10 Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is
A. zero
B. small
C. large
D. very large

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