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

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

Question # 2

The peak value of A.C source is 20 A, then its rms value will be.

Question # 3

The combined effect of resistance and reactance is knows as.

Question # 4

In frequency modulation which factor changed.

Question # 5

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

Question # 6

The flow of D.C current is opposed by

Question # 7

In metal detector, we use.

Question # 8

In pure capacitor A.C. circuit, the current I and charge q are.

Question # 9

The resonance frequency is given by:

Question # 10

When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.

Question # 11

In frequency modulation, the amplitude of carrier waves is

Question # 12

Main reason for world wide use of A.C. is

Question # 13

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 # 14

In AC system we generate sine wave form because:

Question # 15

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

Question # 16

The electromagnetic spectrum contains

Question # 17

The natural frequency of L.C circuit is equal to

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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 A capacitor is perfectly insulator for:
A. Direct current
B. Alternating current
C. Direct as well as alternating current
D. None of these
2 In RLC circuit the energy is dissipated in
A. R only
B. R and L
C. R and C
D. L and C
3 At high frequency, the current through a capacitor is
A. Small
B. Infinity
C. Zero
D. Large
4 The resonance frequency is given by:
A. fr = 2π√LC
B. fr = 1/2πLC
C. fr = 1/ 2π√LC
D. f1 = 1/ 2πC√L
5 Resistance of choke is
A. zero
B. Large
C. Very small
D. Infinite
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 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth
8 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
9 When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.
A. 100 Ohm
B. 10 Ohm
C. 1000 Ohm
D. 1 Ohm
10 Xc =
A. 1/2πfc
B. 2πfc
C. 2π/fc
D. fc/2π

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