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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MCQ's Test For Chapter 0 "Physics ICS Part 2 Chapter 16 Online MCQ's Test"

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Physics ICS Part 2 Chapter 16 Online MCQ's Test

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Question # 1

The internal resistance of a capacitor is called:

Question # 2

An alternating quantity (voltage or current) is completely known if we know its:

Question # 3

Choke consumes extremely small

Question # 4

The circuit which compares the two voltages is.

Question # 5

Electro magnetic waves emitted from radio antenna are.

Question # 6

An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:

Question # 7

The phase difference between the current and voltage at resonce is:

Question # 8

The mean value of A.C. in a cycle is.

Question # 9

In chopke coil the resistance XL an resistance R are:

Question # 10

In LR circiut which one of the following statements is correct?

Question # 11

In three phase A.C supply coils are inclined at an angle of.

Question # 12

The unit of impedance is.

Question # 13

High frequency radio wave is called as

Question # 14

The circuit in which current and voltage are in phase, the power factor is:

Question # 15

The electromagnetic spectrum contains

Question # 16

SI unit of reactance is.

Question # 17

The A.M. transmission frequencies range from

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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 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
2 Choke consumes extremely small
A. Current
B. Charge
C. Power
D. Potential
3 The reactance is the ratio of
A. Vrms/Irms
B. Vrms x Irms
C. Irms/Vrms
D. Vmax x Vrms
4 The slope of q-t curve at any instant of time gives.
A. Voltage
B. Current
C. Charge
D. Botha a and b
5 The peak value of A.C source is 20 A, then its rms value will be.
A. 14.1 A
B. 10 A
C. 20 A
D. 28.2 A
6 The most common source of an A.C. Voltage is.
A. Motor
B. Cell
C. Generator
D. Thermo couple
7 Power dissipated in a pure inductor is.
A. Large
B. Small
C. Infinite
D. Zero
8 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth
9 The internal resistance of a capacitor is called:
A. Impedance
B. Resistance
C. Reactance
D. Conductance
10 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

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