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

High frequency radio wave is called as

Question # 2

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

Question # 3

An in cudutor may store energy in

Question # 4

In A.C circuit of inductor which one is true

Question # 5

The unit of impedance is.

Question # 6

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

Question # 7

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

Question # 8

In modulation, low frequency signal is known as

Question # 9

The unit of impedance is

Question # 10

In Pakistan the frequency of A.C. supply is.

Question # 11

In case of capacitor, the unit of reactance is

Question # 12

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

Question # 13

In LR circiut which one of the following statements is correct?

Question # 14

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

Question # 15

During each cycle A.C. voltage reaches a peak value.

Question # 16

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

Question # 17

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

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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 Average value of current and voltage over a complete cycle is.
A. Positive
B. Negative
C. Zero
D. Infinite
2 The effective value of any sinusoidal alternating current or voltage is
D. None of the above
3 The reactance of inductor depends upon
A. L
D. All of the above
4 In RLC circuit the energy is dissipated in
A. R only
B. R and L
C. R and C
D. L and C
5 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
6 Vrms =
A. 0.7V∘
B.
0.07V∘
C. 0.007V∘
D. 0.75V∘
7 Electron vibrating 94,000 times each second will produce radio waves of frequency.
A. 94 Hz
B. 940 HZ
C. 94 Hz
D. 490 Hz
8 An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:
A. 50 Hz
B. 25Hz
C. 100 Hz
D. 75 Hz
9 Which consumes small power.
A. Inductor
B. Resistor
C. Motor
D. All of these
10 Phase difference between V and I of an A.C through resistor is.
A. Zero Degree
B. 90 o
C. 80o
D. 120o

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