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 mean value of A.C. in a cycle is.

Question # 2

The A.M. transmission frequencies range from

Question # 3

Xc =

Question # 4

The value of capacitive reactance is given by

Question # 5

Main reason for world wide use of A.C. is

Question # 6

In a pure inductive A.C. circuit the current.

Question # 7

The combined effect of resistance and reactance in circuit is called:

Question # 8

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 # 9

In Pakistan the frequency of A.C. supply is.

Question # 10

An in cudutor may store energy in

Question # 11

In case of capacitor, the unit of reactance is

Question # 12

The circuit which compares the two voltages is.

Question # 13

The unit of impedance is

Question # 14

The natural frequency of L.C circuit is equal to

Question # 15

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

Question # 16

Average value of current and voltage over a complete cycle is.

Question # 17

The phase difference between the current and voltage at resonce 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 mean value of A.C. in a cycle is.
A. 1
B. 0
C. I2
D. Nil
2 The effective value of any sinusoidal alternating current or voltage is
D. None of the above
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 Pakistan the frequency of A.C. supply is.
A. 50 Hz
B. 60 Hz
C. 45 Hz
D. 70 Hz
5 XL=
A. 2πfL
B. 1/2πfL
C. 2πfL
D. fL/2π
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 the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.
A. Maximum
B. Minimum
C. Zero
D. Negative
8 X1is low for low frequency Fy but Xc is.
A. Zero
B. Low
C. High
D. Same is H
9 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
10 The natural frequency of L.C circuit is equal to

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