Second Year Physics Chapter 16 Online MCQ Test for 2nd Year Physics Chapter 16 Alternating Current Preparation

FSC Part 2 Physics
Chapter 16 Test

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Physics FSC Part 2 Chapter 16 Online MCQ's Test

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Question # 1

The most common source of an A.C. Voltage is.

Question # 2

In Series resonance circuit the impedance of circuit art resonance frequency, is

Question # 3

The power factor of RL series circuit is.

Question # 4

In purely resistive A.C circuit, instantaneous value of voltage and current:

Question # 5

The internal resistance of a capacitor is called:

Question # 6

In frequency modulation, the amplitude of carrier waves is

Question # 7

The electromagnetic spectrum contains

Question # 8

The combined effect of resistance and reactance in circuit is called:

Question # 9

The peak value of alternating current is 5√2 A. The mean square value of current will be:

Question # 10

The sum of positive and negative peak value called.

Question # 11

At high frequency the value of reactance of capacitor will be.

Question # 12

Power dissipated in a pure inductor is.

Question # 13

In three phase voltage across any two lines is about.

Question # 14

The device which allows only the flow of D.C. is.

Question # 15

Phase difference between V and I of an A.C through resistor is.

Question # 16

100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor is.

Question # 17

In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is.

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FSC Part 2 Physics Chapter 16 Online Test MCQ's

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 The unit of impedance is.
A. Henry
B. Hertz
C. Ampere
D. Ohm
2 The expression P = VI hold only when current and voltage are.
A. In phase
B. Out of phase
C. At right angle to each other
D. At angle of 120 o
3 The flow of D.C current is opposed by
A. Resistor
B. Induction
C. Capacitor
D. All of these
4 High frequency radio wave is called as
A. Fluctuate
B. Carrier wave
C. Matter wave
D. Mechanical wave
5 The highest value reached by the voltage or current in one cycle is called.
A. Peak ot peak value
B. Peak value
C. Instantaneous value
D. Root mean square value
6 The circuit in which current and voltage are in phase, the power factor is:
A. Zero
B. 1
C. -1
D. 2
7 An alternating quantity (voltage or current) is completely known if we know its:
A. Maximum
B. Frequency and phase
C. Effective value
D. Both (a) & (b)
8 Main reason for world wide use of A.C. is
A. It is cheaper
B. Transmitted
C. Botha a and b
D. Reaches in short time
9 Phase difference between V and I of an A.C through resistor is.
A. Zero Degree
B. 90 o
C. 80o
D. 120o
10 Unit of impedance is:
A. Ohm
B. Ohm-1
C. no unit
D. Ohm m-1

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