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 combined effect of resistance and reactance in circuit is called:

Question # 2

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

Question # 3

The main use of A.C is

Question # 4

100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor is.

Question # 5

In frequency modulation, the amplitude of carrier waves is

Question # 6

The combined effect of resistance and reactance is knows as.

Question # 7

In AC system we generate sine wave form because:

Question # 8

The AC system is preferred to DC system because:

Question # 9

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

Question # 10

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

Question # 11

At resonance frequency, the impedance of RLC series circuit is.

Question # 12

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

Question # 13

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

Question # 14

Average value of current and voltage over a complete cycle is.

Question # 15

In case of A.C. through resistor V and I are

Question # 16

The wave form of alternating voltage is a

Question # 17

when an inductor comes close to a metallic object, its inductance 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 Direct current can not flow through.
A. Inductor
B. Resistor
C. Transistor
D. Capacitor
2 The phase difference between the current and voltage at resonce is:
A. 0
B. π
C. -π
D. π/2
3 Electro magnetic waves emitted from radio antenna are.
A. Stationary
B. Longitudinal
C. Transvers
D. Both a and b
4 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)
5 In a pure inductive A.C. circuit the current.
A. Lags behind voltage by 90 o
B. Leads the voltage by 90 o
C. In phase with voltage
D. Leads the voltage by 270 o
6 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
7 The internal resistance of a capacitor is called:
A. Impedance
B. Resistance
C. Reactance
D. Conductance
8 In LR circiut which one of the following statements is correct?
A. L and R opposes each other
B. R value increases with frequency
C. The inductive reactance increases with frequency
D. The inductive reactance decreases with frequency
9 The Basic circuit element in a D.C. circuits which controls the current and voltage is
A.
Resistor
B. Inductor
C.
Capisitor
D. Transistor
10 Vrms =
A. 0.7V∘
B.
0.07V∘
C. 0.007V∘
D. 0.75V∘

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