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

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Question # 1

For electromagnetic waves, Maxwell generalized

Question # 2

Direct current can not flow through.

Question # 3

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

Question # 4

Power dissipation is a pure inductive or in a pure capacitance circuit is:

Question # 5

The reactance is the ratio of

Question # 6

The power factor of RL series circuit is.

Question # 7

The basic circuit element in A.C. circuit which controls current.

Question # 8

Radio frequency choke is

Question # 9

The velocity of an oscillating charge as it moves to and fro along a wire is.

Question # 10

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

Question # 11

The wave form of alternating voltage is a

Question # 12

The main use of A.C is

Question # 13

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

Question # 14

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

Question # 15

The Basic circuit element in a D.C. circuits which controls the current and voltage is

Question # 16

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

Question # 17

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

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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 device which allows only the flow of D.C. is.
A. Capacitors
B. transformer
C. Inductor
D. Generator
2 The phase difference between the current and voltage at resonce is:
A. 0
B. π
C. -π
D. π/2
3 Xc =
A. 1/2πfc
B. 2πfc
C. 2π/fc
D. fc/2π
4 The value of capacitive reactance is given by
A. Xc = VI
B. xc= 1/wc or xc= wL
C. xc= 1*wc or xc=Lw
D. All of above
5 XL=
A. 2πfL
B. 1/2πfL
C. 2πfL
D. fL/2π
6 The phase angle of a series RLC circult at resonant frequency is
A. 1/2
B. sigma
C. Zero
D. sigma /4
7 In three phase A.C supply coils are inclined at an angle of.
A. 0o
B. 90o
C. 120o
D. 80o
8 In Series resonance circuit the impedance of circuit art resonance frequency, is
A. Maximum
B. Minimum
C. It is unequal to R
D. None of above
9 An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:
A. 50 Hz
B. 25Hz
C. 100 Hz
D. 75 Hz
10 Vrms =
A. 0.7V
B.
0.07V
C. 0.007V
D. 0.75V

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