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

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

Question # 2

An A.C. voltmeter reads 220 V, its peak value will be

Question # 3

In frequency modulation which factor changed.

Question # 4

In case of capacitor, the unit of reactance is

Question # 5

The unit of impedance is

Question # 6

The slope of q-t curve at any instant of time gives.

Question # 7

X1is low for low frequency Fy but Xc is.

Question # 8

In frequency modulation, the amplitude of carrier waves is

Question # 9

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 # 10

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

Question # 11

For electromagnetic waves, Maxwell generalized

Question # 12

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

Question # 13

The condition of resonance is:

Question # 14

SI unit of reactance is.

Question # 15

Which consumes small power.

Question # 16

Impedance is denoted by:

Question # 17

The Basic circuit element in a D.C. circuits which controls the current and voltage 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 SI unit of reactance is.
A. Ohm
B. Mho
C. Farad
D. Henry
2 A resistance frequency the impedance of RLC parallel circuit is.
A. Zero
B. Infinite
C. Maximum
D. Minimum
3 The sum of positive and negative peak value called.
A. R.M.S. value
B. P-P value
C. Peak value
D. Average value
4 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?
A. 4 times
B. 1/4 times
C. 8 times
D. 2 times
5 The most common source of an A.C. Voltage is.
A. Motor
B. Cell
C. Generator
D. Thermo couple
6 In three phase A.C. generator the phase difference between each pair of coil is.
A. 45o
B. 90o
C. 120o
D. 60o
7 The phase difference between current and voltage in an inductive circuit is.
A. zero
B. 90 o
C. 180 o
D. 45o
8 The wave form of alternating voltage is a
A. Cotangent curve
B. Cosine curve
C. Sine curve
D. Tangent curve
9 In three phase A.C supply coils are inclined at an angle of.
A. 0o
B. 90o
C. 120o
D. 80o
10 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V

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