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 unit of impedance is

Question # 2

In case of capacitor, the unit of reactance is

Question # 3

In A.C circuit of inductor which one is true

Question # 4

The A.M. transmission frequencies range from

Question # 5

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 # 6

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

Question # 7

In RLC circuit the energy is dissipated in

Question # 8

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

Question # 9

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

Question # 10

If Vrms be the root mean square value of emf then its peak to peak value is given by

Question # 11

The circuit in which current and voltage are in phase, the power factor is:

Question # 12

In pure capacitor A.C. circuit, the current I and charge q are.

Question # 13

In chopke coil the resistance XL an resistance R are:

Question # 14

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

Question # 15

SI unit of reactance is.

Question # 16

Choke consumes extremely small

Question # 17

The phase difference between current and voltage in an inductive circuit 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 circuit in which current and voltage are in phase, the power factor is:
A. Zero
B. 1
C. -1
D. 2
2 At resonance frequency, the impedance of RLC series circuit is.
A. Maximum
B. Minimum
C. Zero
D. Infinite
3 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
4 The phase angle of a series RLC circult at resonant frequency is
A. 1/2
B. sigma
C. Zero
D. sigma /4
5 The effective value of any sinusoidal alternating current or voltage is
D. None of the above
6 SI unit of reactance is.
A. Ohm
B. Mho
C. Farad
D. Henry
7 In case of A.C. through resistor V and I are
A. At 0 o with each other
B. At 180 o with each other
C. At 90 o with each other
D. At 270 o with each other
8 100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor is.
A. 30.8 Ohm
B. 31.8 Ohm
C. 34.8 Ohm
D. 40 Ohm
9 The basic circuit element in A.C. circuit which controls current.
A. Resistor only
B. Capacitor only
C. Inductor only
D. All of these
10 The main reason for world wide use of A.C is because:
A. It is very high power 
B. It can be transmitted over long distance
C. It is cheaper to use
D. ALl of above

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