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

In case of A.C. through resistor V and I are

Question # 2

An in cudutor may store energy in

Question # 3

The phase angle of a series RLC circult at resonant frequency is

Question # 4

If Vrms be the root mean square value of emf then its peak to peak value is given by

Question # 5

During each cycle A.C. voltage reaches a peak value.

Question # 6

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

Question # 7

High frequency radio wave is called as

Question # 8

For electromagnetic waves, Maxwell generalized

Question # 9

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

Question # 10

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

Question # 11

Resistance of choke is

Question # 12

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

Question # 13

Power dissipated in a pure inductor is.

Question # 14

If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.

Question # 15

In modulation, low frequency signal is known as

Question # 16

Choke consumes extremely small

Question # 17

The effective value of any sinusoidal alternating current or voltage is

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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 XL=
A. 2πfL
B. 1/2πfL
C. 2πfL
D. fL/2π
2 The electromagnetic spectrum contains
A. Radio waves
B. X-rays
C. Microwaves
D. All of these
3 The peak value of alternating current is 5√2 A. The mean square value of current will be:
A. 5A
B. 2.5A
C. 5√2A
D. 52
4 The inductive reactance of a coil is direction proportional to.
A. Inductance
B. Resistance
C. Frequency of A.C.
D. Both frequency of A.C. and inductance
5 In three phase A.C. generator the phase difference between each pair of coil is.
A. 45o
B. 90o
C. 120o
D. 60o
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 An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately
A. 50 Hz
B. 100 Hz
C. 80 Hz
D. 120 Hz
8 In Pakistan the frequency of A.C. supply is.
A. 50 Hz
B. 60 Hz
C. 45 Hz
D. 70 Hz
9 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
10 The effective value of any sinusoidal alternating current or voltage is
D. None of the above

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