2nd Year Physics Chapter 16 Online MCQ Test for 12th Class Physics Chapter 16 (Alternating Current)

ICS Part 2 Physics
Chapter 16 Test

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Physics ICS Part 2 Chapter 16 Online MCQ's Test

00:00
Question # 1

The unit of impedance is

Question # 2

In frequency modulation which factor changed.

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

The sum of positive and negative peak value called.

Question # 7

At high frequency the value of reactance of capacitor will be.

Question # 8

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

Question # 9

In case of capacitor, the unit of reactance is

Question # 10

Vrms =

Question # 11

Resistance of choke is

Question # 12

XL=

Question # 13

The peak value of A.C source is 20 A, then its rms value will be.

Question # 14

The AC system is preferred to DC system because:

Question # 15

Choke consumes extremely small

Question # 16

High frequency radio wave is called as

Question # 17

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

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ICS 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 Power dissipation is a pure inductive or in a pure capacitance circuit is:
A. 106
B. 0
C. 10
D. Maximum
2 In Pakistan the frequency of A.C. supply is.
A. 50 Hz
B. 60 Hz
C. 45 Hz
D. 70 Hz
3 The circuit in which current and voltage are in phase, the power factor is:
A. Zero
B. 1
C. -1
D. 2
4 The flow of D.C current is opposed by
A. Resistor
B. Induction
C. Capacitor
D. All of these
5 Impedance is denoted by:
A. A 
B. Z
C. P
D. Q
6 X1is low for low frequency Fy but Xc is.
A. Zero
B. Low
C. High
D. Same is H
7 Vrms =
A. 0.7V
B.
0.07V
C. 0.007V
D. 0.75V
8 When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.
A. 100 Ohm
B. 10 Ohm
C. 1000 Ohm
D. 1 Ohm
9 In three phase A.C supply coils are inclined at an angle of.
A. 0o
B. 90o
C. 120o
D. 80o
10 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth

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