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

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 # 2

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

Question # 3

Electro magnetic waves emitted from radio antenna are.

Question # 4

Unit of impedance is:

Question # 5

Impedance is denoted by:

Question # 6

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

Question # 7

In three phase voltage across any two lines is about.

Question # 8

Average value of current and voltage over a complete cycle is.

Question # 9

In three phase A.C. generator the phase difference between each pair of coil is.

Question # 10

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

Question # 11

An in cudutor may store energy in

Question # 12

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

Question # 13

The reactance of inductor depends upon

Question # 14

Xc =

Question # 15

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

Question # 16

In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.

Question # 17

X1is low for low frequency Fy but Xc 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 The wave form of alternating voltage is a
A. Cotangent curve
B. Cosine curve
C. Sine curve
D. Tangent curve
2 Average value of current and voltage over a complete cycle is.
A. Positive
B. Negative
C. Zero
D. Infinite
3 Which consumes small power.
A. Inductor
B. Resistor
C. Motor
D. All of these
4 The AC system is preferred to DC system because:
A. AC voltage can be easily changed in magnitude
B. DC motor angular velocity is affected badly
C. High voltage AC transmission is less efficient
D. Domestic appliance require AC voltage for their operation
5 The velocity of an oscillating charge as it moves to and fro along a wire is.
A. Changing
B. Constant
C. Infinite
D. zero
6 when an inductor comes close to a metallic object, its inductance is.
A. Decreased
B. Increased
C. Becomes half
D. Becomes 4 times
7 Power dissipated in a pure inductor is.
A. Large
B. Small
C. Infinite
D. Zero
8 Electro magnetic waves emitted from radio antenna are.
A. Stationary
B. Longitudinal
C. Transvers
D. Both a and b
9 An alternating quantity (voltage or current) is completely known if we know its:
A. Maximum
B. Frequency and phase
C. Effective value
D. Both (a) & (b)
10 A capacitor is perfectly insulator for:
A. Direct current
B. Alternating current
C. Direct as well as alternating current
D. None of these

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