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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MCQ's Test For Chapter 0 "Physics ICS Part 2 Chapter 16 Online MCQ's Test"

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Physics ICS Part 2 Chapter 16 Online MCQ's Test

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Question # 1

The condition of resonance is:

Question # 2

The highest value reached by the voltage or current is one cycle is called:

Question # 3

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

Question # 4

Which consumes small power.

Question # 5

High frequency radio wave is called as

Question # 6

Power dissipation in A.C circuit is expressed as:

Question # 7

For electromagnetic waves, Maxwell generalized

Question # 8

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

Question # 9

In frequency modulation, the amplitude of carrier waves is

Question # 10

When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.

Question # 11

An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:

Question # 12

In three phase A.C supply coils are inclined at an angle of.

Question # 13

An in cudutor may store energy in

Question # 14

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 # 15

The power factor of RL series circuit is.

Question # 16

The expression P = VI hold only when current and voltage are.

Question # 17

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

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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 The phase difference between the current and voltage at resonce is:
A. 0
B. π
C. -π
D. π/2
2 The mean value of A.C. in a cycle is.
A. 1
B. 0
C. I2
D. Nil
3 The most common source of an A.C. Voltage is.
A. Motor
B. Cell
C. Generator
D. Thermo couple
4 An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately
A. 50 Hz
B. 100 Hz
C. 80 Hz
D. 120 Hz
5 100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor is.
A. 30.8 Ohm
B. 31.8 Ohm
C. 34.8 Ohm
D. 40 Ohm
6 The sum of positive and negative peak value called.
A. R.M.S. value
B. P-P value
C. Peak value
D. Average value
7 The wave form of alternating voltage is a
A. Cotangent curve
B. Cosine curve
C. Sine curve
D. Tangent curve
8 At high frequency the value of reactance of capacitor will be.
A. Small
B. Zero
C. Large
D. Infinite
9 The combined effect of resistance and reactance is knows as.
A. Inductance
B. Conductance
C. Resistance
D. Impedance
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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