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

SI unit of reactance is.

Question # 2

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

Question # 3

A capacitor is perfectly insulator for:

Question # 4

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

Question # 5

Vrms =

Question # 6

The peak to peak value of alternating voltage is

Question # 7

The A.M. transmission frequencies range from

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

Power dissipation in A.C circuit is expressed as:

Question # 12

The expression P = VI hold only when current and voltage are.

Question # 13

An in cudutor may store energy in

Question # 14

Average value of current and voltage over a complete cycle is.

Question # 15

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

Question # 16

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

Question # 17

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

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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 High frequency radio wave is called as
A. Fluctuate
B. Carrier wave
C. Matter wave
D. Mechanical wave
2 The power factor of RL series circuit is.
A. 0
B. 1
C. Less then 1
D. More than one
3 An electromagnetic wave goes from air to glass which of the following does not change?
A. Radio waves
B. X-rays
C. Ultra violet radiation
D. Ultra sond waves
4 If Io is the peak value of current, then its root mean square value is given by
B. 2 Io
C. Io
D. 0.7 Io
5 Electro magnetic waves emitted from radio antenna are.
A. Stationary
B. Longitudinal
C. Transvers
D. Both a and b
6 The unit of impedance is.
A. Henry
B. Hertz
C. Ampere
D. Ohm
7 The resonance frequency is given by:
A. fr = 2π√LC
B. fr = 1/2πLC
C. fr = 1/ 2π√LC
D. f1 = 1/ 2πC√L
8 SI unit of reactance is.
A. Ohm
B. Mho
C. Farad
D. Henry
9 The phase difference between the current and voltage at resonce is:
A. 0
B. π
C. -π
D. π/2
10 In frequency modulation which factor changed.
A. Amplitude of charge carriers
B. Frequency of charge carriers
C. Amplitude of signal
D. Frequency of signal

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