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 condition of resonance is:

Question # 2

The unit of impedance is

Question # 3

Power dissipated in a pure inductor is.

Question # 4

In metal detector, we use.

Question # 5

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

Question # 6

The combined effect of resistance and reactance is knows as.

Question # 7

An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately

Question # 8

The main use of A.C is

Question # 9

The circuit in which current and voltage are in phase, the power factor is:

Question # 10

For electromagnetic waves, Maxwell generalized

Question # 11

The value of capacitive reactance is given by

Question # 12

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

Question # 13

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

Question # 14

The sum of positive and negative peak value called.

Question # 15

In an LRC circiut, the capacitance is made one-fourth, when an resonance . Then what should be change in inductance, so that the circuit remain in resonance?

Question # 16

In AC system we generate sine wave form because:

Question # 17

The internal resistance of a capacitor is called:

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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 In Series resonance circuit the impedance of circuit art resonance frequency, is
A. Maximum
B. Minimum
C. It is unequal to R
D. None of above
2 when an inductor comes close to a metallic object, its inductance is.
A. Decreased
B. Increased
C. Becomes half
D. Becomes 4 times
3 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
4 Power dissipated in a pure inductor is.
A. Large
B. Small
C. Infinite
D. Zero
5 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
6 In three phase A.C. generator the phase difference between each pair of coil is.
A. 45o
B. 90o
C. 120o
D. 60o
7 The peak to peak value of alternating voltage is
A. 2Vo
B. Vo
D. None of these
8 The effective value of any sinusoidal alternating current or voltage is
D. None of the above
9 Impedance is denoted by:
A. A 
B. Z
C. P
D. Q
10 In a pure inductive A.C. circuit the current.
A. Lags behind voltage by 90 o
B. Leads the voltage by 90 o
C. In phase with voltage
D. Leads the voltage by 270 o

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