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

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

Question # 2

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

Question # 3

Radio frequency choke is

Question # 4

Unit of impedance is:

Question # 5

In three phase voltage across any two lines is about.

Question # 6

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

Question # 7

The inductive reactance of a coil is direction proportional to.

Question # 8

The combined effect of resistance and reactance is knows as.

Question # 9

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

Question # 10

In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.

Question # 11

In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is.

Question # 12

In AC system we generate sine wave form because:

Question # 13

Vrms =

Question # 14

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

Question # 15

In frequency modulation which factor changed.

Question # 16

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

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 voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
2 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)
3 Choke consumes extremely small
A. Current
B. Charge
C. Power
D. Potential
4 An in cudutor may store energy in
A. Its magnetic field
B. Its coil
C. Its electric field
D. A neighboring circuit
5 An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately
A. 50 Hz
B. 100 Hz
C. 80 Hz
D. 120 Hz
6 In Series resonance circuit the impedance of circuit art resonance frequency, is
A. Maximum
B. Minimum
C. It is unequal to R
D. None of above
7 The phase angle of a series RLC circult at resonant frequency is
A. 1/2
B. sigma
C. Zero
D. sigma /4
8 When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.
A. 100 Ohm
B. 10 Ohm
C. 1000 Ohm
D. 1 Ohm
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?
A. 4 times
B. 1/4 times
C. 8 times
D. 2 times
10 In pure capacitor A.C. circuit, the current I and charge q are.
A. In phase
B. Out of phase
C. Parallel to each other
D. None of above

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