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

A capacitor is perfectly insulator for:

Question # 2

At high frequency, the current through a capacitor is

Question # 3

Unit of impedance is:

Question # 4

In A.C circuit of inductor which one is true

Question # 5

In modulation, low frequency signal is known as

Question # 6

The inductive reactance of a coil is direction proportional to.

Question # 7

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

Question # 8

Power dissipation in A.C circuit is expressed as:

Question # 9

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

Question # 10

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

Question # 11

The device which allows only the flow of D.C. is.

Question # 12

The phase difference between current and voltage in an inductive circuit is.

Question # 13

The basic circuit element in A.C. circuit which controls current.

Question # 14

Radio frequency choke is

Question # 15

The unit of impedance is

Question # 16

X1is low for low frequency Fy but Xc is.

Question # 17

The internal resistance of a capacitor is called:

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 The reactance is the ratio of
A. Vrms/Irms
B. Vrms x Irms
C. Irms/Vrms
D. Vmax x Vrms
2 Choke consumes extremely small
A. Current
B. Charge
C. Power
D. Potential
3 At high frequency the value of reactance of capacitor will be.
A. Small
B. Zero
C. Large
D. Infinite
4 Main reason for world wide use of A.C. is
A. It is cheaper
B. Transmitted
C. Botha a and b
D. Reaches in short time
5 In modulation, low frequency signal is known as
A. Carrier wave
B. fluctuated signal
C. Modulated carrier signal
D. Modulation signal
6 The Basic circuit element in a D.C. circuits which controls the current and voltage is
A.
Resistor
B. Inductor
C.
Capisitor
D. Transistor
7 Vrms =
A. 0.7V∘
B.
0.07V∘
C. 0.007V∘
D. 0.75V∘
8 The expression P = VI hold only when current and voltage are.
A. In phase
B. Out of phase
C. At right angle to each other
D. At angle of 120 o
9 The velocity of an oscillating charge as it moves to and fro along a wire is.
A. Changing
B. Constant
C. Infinite
D. zero
10 SI unit of reactance is.
A. Ohm
B. Mho
C. Farad
D. Henry

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