2nd Year Physics Chapter 16 Online MCQ Test for 12th Class Physics Chapter 16 (Alternating Current)

ICS Part 2 Physics
Chapter 16 Test

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Physics ICS Part 2 Chapter 16 Online MCQ's Test

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Question # 1

The main use of A.C is

Question # 2

The inductive reactance of a coil is direction proportional to.

Question # 3

In AC system we generate sine wave form because:

Question # 4

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

Question # 5

The slope of q-t curve at any instant of time gives.

Question # 6

The unit of impedance is

Question # 7

Electro magnetic waves emitted from radio antenna are.

Question # 8

A resistance frequency the impedance of RLC parallel circuit is.

Question # 9

In frequency modulation, the amplitude of carrier waves is

Question # 10

A capacitor is perfectly insulator for:

Question # 11

Power dissipated in a pure inductor is.

Question # 12

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

Question # 13

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

Question # 14

In modulation, low frequency signal is known as

Question # 15

For electromagnetic waves, Maxwell generalized

Question # 16

Unit of impedance is:

Question # 17

The AC system is preferred to DC system because:

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ICS 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 Direct current can not flow through.
A. Inductor
B. Resistor
C. Transistor
D. Capacitor
2 The mean value of A.C. in a cycle is.
A. 1
B. 0
C. I2
D. Nil
3 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth
4 In Pakistan the frequency of A.C. supply is.
A. 50 Hz
B. 60 Hz
C. 45 Hz
D. 70 Hz
5 Power dissipated in a pure inductor is.
A. Large
B. Small
C. Infinite
D. Zero
6 In LR circiut which one of the following statements is correct?
A. L and R opposes each other
B. R value increases with frequency
C. The inductive reactance increases with frequency
D. The inductive reactance decreases with frequency
7 The internal resistance of a capacitor is called:
A. Impedance
B. Resistance
C. Reactance
D. Conductance
8 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?
A. 4 times
B. 1/4 times
C. 8 times
D. 2 times
9 At resonance frequency, the impedance of RLC series circuit is.
A. Maximum
B. Minimum
C. Zero
D. Infinite
10 Phase difference between V and I of an A.C through resistor is.
A. Zero Degree
B. 90 o
C. 80o
D. 120o

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