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

00:00
Question # 1

In modulation, low frequency signal is known as

Question # 2

In frequency modulation, the amplitude of carrier waves is

Question # 3

The power factor of RL series circuit is.

Question # 4

In an LRC circiut, the capacitance is made one-fourth, when an resonance . Then what should be change in inductance, so that the circuit remain in resonance?

Question # 5

The highest value reached by the voltage or current is one cycle is called:

Question # 6

Power dissipated in a pure inductor is.

Question # 7

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

Question # 8

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

Question # 9

In case of capacitor, the unit of reactance is

Question # 10

Electron vibrating 94,000 times each second will produce radio waves of frequency.

Question # 11

In three phase A.C. generator the phase difference between each pair of coil is.

Question # 12

In A.C circuit through a capacitor which one is:

Question # 13

The peak to peak value of alternating voltage is

Question # 14

The value of capacitive reactance is given by

Question # 15

At resonance frequency, the impedance of RLC series circuit is.

Question # 16

For electromagnetic waves, Maxwell generalized

Question # 17

Average value of current and voltage over a complete cycle 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 AC system is preferred to DC system because:
A. AC voltage can be easily changed in magnitude
B. DC motor angular velocity is affected badly
C. High voltage AC transmission is less efficient
D. Domestic appliance require AC voltage for their operation
2 For electromagnetic waves, Maxwell generalized
A. Gauses law for magnetism
B. Gauses law for eletricity
C. Fradays law
D. Amperes law
3 In case of capacitor, the unit of reactance is
A. Farad
B. Ohm
C. Newton
D. All of these
4 The reactance of inductor depends upon
A. L
D. All of the above
5 An A.C. voltmeter reads 220 V, its peak value will be
A. 225 V
B. 240 V
C. 311.12 V
D. 300 V
6 The velocity of an oscillating charge as it moves to and fro along a wire is.
A. Changing
B. Constant
C. Infinite
D. zero
7 The highest value reached by the voltage or current is one cycle is called:
A. Peak to peak value
B. Peak value
C.
Instantaneous value
D. Root mean square value
8 when an inductor comes close to a metallic object, its inductance is.
A. Decreased
B. Increased
C. Becomes half
D. Becomes 4 times
9 The power factor of RL series circuit is.
A. 0
B. 1
C. Less then 1
D. More than one
10 The sum of positive and negative peak value called.
A. R.M.S. value
B. P-P value
C. Peak value
D. Average value

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