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

The AC system is preferred to DC system because:

Question # 2

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

Question # 3

Which consumes small power.

Question # 4

The reactance is the ratio of

Question # 5

The device which allows only the continuous flow of AC through it is.

Question # 6

In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.

Question # 7

In case of capacitor, the unit of reactance is

Question # 8

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

Question # 9

The circuit which compares the two voltages is.

Question # 10

The condition of resonance is:

Question # 11

At high frequency, the current through a capacitor is

Question # 12

The peak to peak value of alternating voltage is

Question # 13

The flow of D.C current is opposed by

Question # 14

For electromagnetic waves, Maxwell generalized

Question # 15

The unit of impedance is.

Question # 16

An electromagnetic wave goes from air to glass which of the following does not change?

Question # 17

The main use of A.C 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 The combined effect of resistance and reactance is knows as.
A. Inductance
B. Conductance
C. Resistance
D. Impedance
2 A resistance frequency the impedance of RLC parallel circuit is.
A. Zero
B. Infinite
C. Maximum
D. Minimum
3 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth
4 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
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 In Pakistan the frequency of A.C. supply is.
A. 50 Hz
B. 60 Hz
C. 45 Hz
D. 70 Hz
7 In frequency modulation, the amplitude of carrier waves is
A. Increases
B. Remains constant
C. Decreases
D. None of these
8 The condition of resonance is:
A. XL = 1/2 Xc
B. XL = Xc
C. Xc = 4x2
D. None of above
9 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
10 In case of A.C. through resistor V and I are
A. At 0 o with each other
B. At 180 o with each other
C. At 90 o with each other
D. At 270 o with each other

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