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

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

Question # 2

The peak value of alternating current is 5√2 A. The mean square value of current will be:

Question # 3

In frequency modulation which factor changed.

Question # 4

At resonance, the behavior of R-L-C series circuit is.

Question # 5

Power dissipation in A.C circuit is expressed as:

Question # 6

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

Question # 7

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

Question # 8

The natural frequency of L.C circuit is equal to

Question # 9

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

Question # 10

Radio frequency choke is

Question # 11

The inductive reactance of a coil is direction proportional to.

Question # 12

Which consumes small power.

Question # 13

In RLC circuit the energy is dissipated in

Question # 14

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

Question # 15

The combined effect of resistance and reactance in circuit is called:

Question # 16

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

Question # 17

100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor 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 Phase difference between V and I of an A.C through resistor is.
A. Zero Degree
B. 90 o
C. 80o
D. 120o
2 The slope of q-t curve at any instant of time gives.
A. Voltage
B. Current
C. Charge
D. Botha a and b
3 For electromagnetic waves, Maxwell generalized
A. Gauses law for magnetism
B. Gauses law for eletricity
C. Fradays law
D. Amperes law
4 A resistance frequency the impedance of RLC parallel circuit is.
A. Zero
B. Infinite
C. Maximum
D. Minimum
5 The combined effect of resistance and reactance in circuit is called:
A. Impedance
B. Inductance
C. Capacitance
D. None of above
6 Xc =
A. 1/2πfc
B. 2πfc
C. 2π/fc
D. fc/2π
7 XL=
A. 2πfL
B. 1/2πfL
C. 2πfL
D. fL/2π
8 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
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 At high frequency the value of reactance of capacitor will be.
A. Small
B. Zero
C. Large
D. Infinite

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