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

00:00
Question # 1

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

Question # 2

Radio frequency choke is

Question # 3

Power dissipation is a pure inductive or in a pure capacitance circuit is:

Question # 4

In Series resonance circuit the impedance of circuit art resonance frequency, is

Question # 5

Unit of impedance is:

Question # 6

The AC system is preferred to DC system because:

Question # 7

In frequency modulation which factor changed.

Question # 8

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

Question # 9

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 # 10

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

Question # 11

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

Question # 12

XL=

Question # 13

An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately

Question # 14

The internal resistance of a capacitor is called:

Question # 15

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

Question # 16

In RLC circuit the energy is dissipated in

Question # 17

The condition of resonance 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 In three phase A.C. generator the phase difference between each pair of coil is.
A. 45o
B. 90o
C. 120o
D. 60o
2 100 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
3 The phase difference between current and voltage in an inductive circuit is.
A. zero
B. 90 o
C. 180 o
D. 45o
4 In frequency modulation, the amplitude of carrier waves is
A. Increases
B. Remains constant
C. Decreases
D. None of these
5 SI unit of reactance is.
A. Ohm
B. Mho
C. Farad
D. Henry
6 The reactance of inductor depends upon
A. L
D. All of the above
7 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
8 The highest value reached by the voltage or current is one cycle is called:
A. Peak to peak value
B. Peak value
C.
Instantaneous value
D. Root mean square value
9 The sum of positive and negative peak value called.
A. R.M.S. value
B. P-P value
C. Peak value
D. Average value
10 In AC system we generate sine wave form because:
A. It san be easily draw
B. It produces least disturbance in electrical circuits
C. It is nature standard
D. Other waves cannot be produced easily

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