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

The wave form of alternating voltage is a

Question # 2

Phase difference between V and I of an A.C through resistor is.

Question # 3

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

Question # 4

The unit of impedance is

Question # 5

The main use of A.C is

Question # 6

In A.C circuit through a capacitor which one is:

Question # 7

Xc =

Question # 8

In modulation, low frequency signal is known as

Question # 9

A capacitor is perfectly insulator for:

Question # 10

The resonance frequency is given by:

Question # 11

The unit of impedance is.

Question # 12

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

Question # 13

In frequency modulation, the amplitude of carrier waves is

Question # 14

The natural frequency of L.C circuit is equal to

Question # 15

The main reason for world wide use of A.C is because:

Question # 16

In purely resistive A.C circuit, instantaneous value of voltage and current:

Question # 17

In three phase voltage across any two lines is about.

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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 For electromagnetic waves, Maxwell generalized
A. Gauses law for magnetism
B. Gauses law for eletricity
C. Fradays law
D. Amperes law
2 The reactance is the ratio of
A. Vrms/Irms
B. Vrms x Irms
C. Irms/Vrms
D. Vmax x Vrms
3 If Io is the peak value of current, then its root mean square value is given by
B. 2 Io
C. Io
D. 0.7 Io
4 An in cudutor may store energy in
A. Its magnetic field
B. Its coil
C. Its electric field
D. A neighboring circuit
5 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
6 At high frequency, the current through a capacitor is
A. Small
B. Infinity
C. Zero
D. Large
7 The combined effect of resistance and reactance in circuit is called:
A. Impedance
B. Inductance
C. Capacitance
D. None of above
8 In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.
A. Maximum
B. Minimum
C. Zero
D. Negative
9 Power dissipation is a pure inductive or in a pure capacitance circuit is:
A. 106
B. 0
C. 10
D. Maximum
10 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)

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