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 frequency modulation which factor changed.

Question # 2

The reactance of inductor depends upon

Question # 3

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

Question # 4

The velocity of an oscillating charge as it moves to and fro along a wire is.

Question # 5

X1is low for low frequency Fy but Xc is.

Question # 6

The flow of D.C current is opposed by

Question # 7

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

Question # 8

A resistance frequency the impedance of RLC parallel circuit is.

Question # 9

100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor is.

Question # 10

The phase difference between the current and voltage at resonce is:

Question # 11

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

Question # 12

In three phase A.C. generator the phase difference between each pair of coil is.

Question # 13

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

Question # 14

In frequency modulation, the amplitude of carrier waves is

Question # 15

In modulation, low frequency signal is known as

Question # 16

The unit of impedance is

Question # 17

In Pakistan the frequency of A.C. supply 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 when an inductor comes close to a metallic object, its inductance is.
A. Decreased
B. Increased
C. Becomes half
D. Becomes 4 times
2 Radio frequency choke is
A. Iron cored
B. Air Cored
C. Air as well as iron cored
D. None of these
3 In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is.
A. 90o
B. 270o
C. 0o
D. 180o
4 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
5 XL=
A. 2πfL
B. 1/2πfL
C. 2πfL
D. fL/2π
6 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
7 An alternating quantity (voltage or current) is completely known if we know its:
A. Maximum
B. Frequency and phase
C. Effective value
D. Both (a) & (b)
8 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
9 The slope of q-t curve at any instant of time gives.
A. Voltage
B. Current
C. Charge
D. Botha a and b
10 The most common source of an A.C. Voltage is.
A. Motor
B. Cell
C. Generator
D. Thermo couple

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