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

In purely resistive A.C circuit, instantaneous value of voltage and current:

Question # 2

Resistance of choke is

Question # 3

Which consumes small power.

Question # 4

The electromagnetic spectrum contains

Question # 5

The A.M. transmission frequencies range from

Question # 6

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

Question # 7

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

Question # 8

An in cudutor may store energy in

Question # 9

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

Question # 10

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

Question # 11

The flow of D.C current is opposed by

Question # 12

The main use of A.C is

Question # 13

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

Question # 14

The reactance is the ratio of

Question # 15

In RLC circuit the energy is dissipated in

Question # 16

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

Question # 17

Electro magnetic waves emitted from radio antenna are.

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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 natural frequency of L.C circuit is equal to
2 High frequency radio wave is called as
A. Fluctuate
B. Carrier wave
C. Matter wave
D. Mechanical wave
3 At high frequency the value of reactance of capacitor will be.
A. Small
B. Zero
C. Large
D. Infinite
4 In purely resistive A.C circuit, instantaneous value of voltage and current:
A. Current lags behind voltage
B. Current leads voltage by π/2
C. Both are in Phase
D. Voltage leads current by Pase θ=π/2
5 A capacitor is perfectly insulator for:
A. Direct current
B. Alternating current
C. Direct as well as alternating current
D. None of these
6 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
7 In pure capacitor A.C. circuit, the current I and charge q are.
A. In phase
B. Out of phase
C. Parallel to each other
D. None of above
8 The peak value of A.C source is 20 A, then its rms value will be.
A. 14.1 A
B. 10 A
C. 20 A
D. 28.2 A
9 Power dissipation in A.C circuit is expressed as:
A. P =Irms x Vrms Sinθ
B. IxVCosθ
C. IrmsxVrmsCosθ
D. Irms x Vrms Sin2θ
10 The sum of positive and negative peak value called.
A. R.M.S. value
B. P-P value
C. Peak value
D. Average value

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