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 most common source of an A.C. Voltage is.

Question # 2

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

Question # 3

The AC system is preferred to DC system because:

Question # 4

In frequency modulation, the amplitude of carrier waves is

Question # 5

Impedance is denoted by:

Question # 6

An in cudutor may store energy in

Question # 7

If Vrms be the root mean square value of emf then its peak to peak value is given by

Question # 8

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

Question # 9

In three phase voltage across any two lines is about.

Question # 10

Phase difference between V and I of an A.C through resistor is.

Question # 11

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

Question # 12

If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.

Question # 13

The circuit which compares the two voltages is.

Question # 14

The internal resistance of a capacitor is called:

Question # 15

The combined effect of resistance and reactance is knows as.

Question # 16

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

Question # 17

In RLC circuit the energy is dissipated in

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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 unit of impedance is.
A. Henry
B. Hertz
C. Ampere
D. Ohm
2 The resonance frequency is given by:
A. fr = 2π√LC
B. fr = 1/2πLC
C. fr = 1/ 2π√LC
D. f1 = 1/ 2πC√L
3 The most common source of an A.C. Voltage is.
A. Motor
B. Cell
C. Generator
D. Thermo couple
4 Unit of impedance is:
A. Ohm
B. Ohm-1
C. no unit
D. Ohm m-1
5 X1is low for low frequency Fy but Xc is.
A. Zero
B. Low
C. High
D. Same is H
6 Vrms =
A. 0.7V
B.
0.07V
C. 0.007V
D. 0.75V
7 An electromagnetic wave goes from air to glass which of the following does not change?
A. Radio waves
B. X-rays
C. Ultra violet radiation
D. Ultra sond waves
8 XL=
A. 2πfL
B. 1/2πfL
C. 2πfL
D. fL/2π
9 An A.C. voltmeter reads 220 V, its peak value will be
A. 225 V
B. 240 V
C. 311.12 V
D. 300 V
10 In AC system we generate sine wave form because:
A. It san be easily draw
B. It produces least disturbance in electrical circuits
C. It is nature standard
D. Other waves cannot be produced easily

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