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

Which consumes small power.

Question # 2

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

Question # 3

Direct current can not flow through.

Question # 4

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

Question # 5

In case of A.C. through resistor V and I are

Question # 6

In A.C circuit of inductor which one is true

Question # 7

The unit of impedance is

Question # 8

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

Question # 9

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

Question # 10

The effective value of any sinusoidal alternating current or voltage is

Question # 11

When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.

Question # 12

Power dissipation in A.C circuit is expressed as:

Question # 13

In LR circiut which one of the following statements is correct?

Question # 14

Power dissipated in a pure inductor is.

Question # 15

XL=

Question # 16

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

Question # 17

In RLC series circuit at resonance the phase difference between capacitor and inductor reactance 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 Basic circuit element in a D.C. circuits which controls the current and voltage is
A.
Resistor
B. Inductor
C.
Capisitor
D. Transistor
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 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?
A. 4 times
B. 1/4 times
C. 8 times
D. 2 times
4 In LR circiut which one of the following statements is correct?
A. L and R opposes each other
B. R value increases with frequency
C. The inductive reactance increases with frequency
D. The inductive reactance decreases with frequency
5 At resonance frequency, the impedance of RLC series circuit is.
A. Maximum
B. Minimum
C. Zero
D. Infinite
6 Xc =
A. 1/2πfc
B. 2πfc
C. 2π/fc
D. fc/2π
7 In frequency modulation which factor changed.
A. Amplitude of charge carriers
B. Frequency of charge carriers
C. Amplitude of signal
D. Frequency of signal
8 During each cycle A.C. voltage reaches a peak value.
A. Once
B. Twice
C. Thrice
D. Four time
9 At high frequency, the current through a capacitor is
A. Small
B. Infinity
C. Zero
D. Large
10 Power dissipated in a pure inductor is.
A. Large
B. Small
C. Infinite
D. Zero

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