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

The RMS value of alternating current is:

Question # 2

A changing magnetic flux creates around itself

Question # 3

At resonance frequency the impedance of parallel resonance circuit is

Question # 4

When the p-n junction is forward biased its resistance is of the order of

Question # 5

Alternating current can induce voltage because it has a

Question # 6

Transmitting antenna emits

Question # 7

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

Question # 8

Chock consumes externally small

Question # 9

Electromagnetic waves transmit energy equal to

Question # 10

The phase at the positive peak of an A.C. cycle is:

Question # 11

For normal operation of transistor, the batteries

Question # 12

The device which allows only the flow of an A.C. through a circuit is

Question # 13

In a transistor, the central region is called

Question # 14

The sum of positive and negative peak values is called:

Question # 15

In RLC series circuit, resonance occurs when

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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 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
3 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
4 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
5 An A.C varies as a function of
A. Current
B. Voltage
C. Time
D. Charge
6 Which of the following has a great concentration of impurity
A. base
B. emitter
C. collector
D. none of these
7 Peak value of alternative current is:
A. one of its Instantaneous value
B. Equal to its RMS value
C. The same as its peak-to-peak value
D. Both (B) and (C)
8 At resonance, the phase angle for RLC series resonance circuit equals
A. 0°
B. 90°
C. 180°
D. 270°
9 Chock consumes externally small
A. Charge
B. Current
C. Power
D. Potential
10 The r.m.s. value of alternating current is equal to its maximum value at angle of
A. 60°
B. 45°
C. 30°
D. 90°

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