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

An electromagnetic wave goes from air to glass which of the following does not change?

Question # 2

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

Question # 3

Which consumes small power.

Question # 4

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

Question # 5

Radio frequency choke is

Question # 6

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

Question # 7

In chopke coil the resistance XL an resistance R are:

Question # 8

The phase angle of a series RLC circult at resonant frequency is

Question # 9

The peak value of A.C source is 20 A, then its rms value will be.

Question # 10

The wave form of alternating voltage is a

Question # 11

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

Question # 12

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

Question # 13

The A.M. transmission frequencies range from

Question # 14

The velocity of an oscillating charge as it moves to and fro along a wire is.

Question # 15

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

Question # 16

The power factor of RL series circuit is.

Question # 17

An alternating quantity (voltage or current) is completely known if we know its:

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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 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
2 Electro magnetic waves emitted from radio antenna are.
A. Stationary
B. Longitudinal
C. Transvers
D. Both a and b
3 The resonance frequency is given by:
A. fr = 2π√LC
B. fr = 1/2πLC
C. fr = 1/ 2π√LC
D. f1 = 1/ 2πC√L
4 The combined effect of resistance and reactance in circuit is called:
A. Impedance
B. Inductance
C. Capacitance
D. None of above
5 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
6 At resonance, the behavior of R-L-C series circuit is.
A. Resistive
B. Capacitive
C. Inductive
D. Modulative
7 Xc =
A. 1/2πfc
B. 2πfc
C. 2π/fc
D. fc/2π
8 Direct current can not flow through.
A. Inductor
B. Resistor
C. Transistor
D. Capacitor
9 The natural frequency of L.C circuit is equal to
10 Phase difference between V and I of an A.C through resistor is.
A. Zero Degree
B. 90 o
C. 80o
D. 120o

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