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

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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

The internal resistance of a capacitor is called:

Question # 2

Unit of impedance is:

Question # 3

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

Question # 4

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

Question # 5

Impedance is denoted by:

Question # 6

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

Question # 7

Power dissipation in A.C circuit is expressed as:

Question # 8

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

Question # 9

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

Question # 10

In Pakistan the frequency of A.C. supply is.

Question # 11

The condition of resonance is:

Question # 12

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

Question # 13

Electro magnetic waves emitted from radio antenna are.

Question # 14

For electromagnetic waves, Maxwell generalized

Question # 15

The power factor of RL series circuit is.

Question # 16

In A.C circuit through a capacitor which one is:

Question # 17

In frequency modulation which factor changed.

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 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
2 The basic circuit element in A.C. circuit which controls current.
A. Resistor only
B. Capacitor only
C. Inductor only
D. All of these
3 The condition of resonance is:
A. XL = 1/2 Xc
B. XL = Xc
C. Xc = 4x2
D. None of above
4 The main use of A.C is
A. Minimum line losses
B. Long distance transmission
C. Stepping up to required voltage only
D. Steeping down to required voltage only
5 The main reason for world wide use of A.C is because:
A. It is very high power 
B. It can be transmitted over long distance
C. It is cheaper to use
D. ALl of above
6 The mean value of A.C. in a cycle is.
A. 1
B. 0
C. I2
D. Nil
7 Main reason for world wide use of A.C. is
A. It is cheaper
B. Transmitted
C. Botha a and b
D. Reaches in short time
8 The wave form of alternating voltage is a
A. Cotangent curve
B. Cosine curve
C. Sine curve
D. Tangent curve
9 The phase difference between current and voltage in an inductive circuit is.
A. zero
B. 90 o
C. 180 o
D. 45o
10 In A.C circuit through a capacitor which one is:
A. Current leads voltage by 90∘
B. Current lags behind voltage by 90∘
C. Both will be in phase
D. None of above 

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