2nd Year Physics Chapter 16 Online MCQ Test for 12th Class Physics Chapter 16 (Alternating Current)

ICS Part 2 Physics
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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

X1is low for low frequency Fy but Xc is.

Question # 2

At high frequency the value of reactance of capacitor will be.

Question # 3

If Io is the peak value of current, then its root mean square value is given by

Question # 4

In a pure inductive A.C. circuit the current.

Question # 5

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

Question # 6

In frequency modulation, the amplitude of carrier waves is

Question # 7

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

Question # 8

The peak value of alternating current is 5√2 A. The mean square value of current will be:

Question # 9

The sum of positive and negative peak value called.

Question # 10

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

Question # 11

Power dissipation in A.C circuit is expressed as:

Question # 12

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

Question # 13

The A.M. transmission frequencies range from

Question # 14

The highest value reached by the voltage or current in one cycle is called.

Question # 15

Electro magnetic waves emitted from radio antenna are.

Question # 16

The highest value reached by the voltage or current is one cycle is called:

Question # 17

The wave form of alternating voltage is a

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 SI unit of reactance is.
A. Ohm
B. Mho
C. Farad
D. Henry
2 The phase difference between the current and voltage at resonce is:
A. 0
B. π
C. -π
D. π/2
3 The phase angle of a series RLC circult at resonant frequency is
A. 1/2
B. sigma
C. Zero
D. sigma /4
4 The unit of impedance is
A. Farad
B. Henry
C. Tesla
D. Ohm
5 The flow of D.C current is opposed by
A. Resistor
B. Induction
C. Capacitor
D. All of these
6 The highest value reached by the voltage or current in one cycle is called.
A. Peak ot peak value
B. Peak value
C. Instantaneous value
D. Root mean square value
7 The AC system is preferred to DC system because:
A. AC voltage can be easily changed in magnitude
B. DC motor angular velocity is affected badly
C. High voltage AC transmission is less efficient
D. Domestic appliance require AC voltage for their operation
8 Electro magnetic waves emitted from radio antenna are.
A. Stationary
B. Longitudinal
C. Transvers
D. Both a and b
9 At resonance, the behavior of R-L-C series circuit is.
A. Resistive
B. Capacitive
C. Inductive
D. Modulative
10 Power dissipation is a pure inductive or in a pure capacitance circuit is:
A. 106
B. 0
C. 10∘
D. Maximum

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