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 in A.C circuit is expressed as:

Question # 2

A resistance frequency the impedance of RLC parallel circuit is.

Question # 3

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

Question # 4

X1is low for low frequency Fy but Xc is.

Question # 5

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

Question # 6

The expression P = VI hold only when current and voltage are.

Question # 7

The sum of positive and negative peak value called.

Question # 8

Vrms =

Question # 9

The phase difference between the current and voltage at resonce is:

Question # 10

XL=

Question # 11

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

Question # 12

In frequency modulation, the amplitude of carrier waves is

Question # 13

The resonance frequency is given by:

Question # 14

The unit of impedance is.

Question # 15

The peak to peak value of alternating voltage is

Question # 16

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

Question # 17

In RLC series circuit at resonance the phase difference between capacitor and inductor reactance 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 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth
2 At resonance, the behavior of R-L-C series circuit is.
A. Resistive
B. Capacitive
C. Inductive
D. Modulative
3 The flow of D.C current is opposed by
A. Resistor
B. Induction
C. Capacitor
D. All of these
4 In three phase A.C supply coils are inclined at an angle of.
A. 0o
B. 90o
C. 120o
D. 80o
5 The peak to peak value of alternating voltage is
A. 2Vo
B. Vo
D. None of these
6 In chopke coil the resistance XL an resistance R are:
A. XL=R
B. XL<<R
C. XL>>R
D. XL=∞
7 In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.
A. Maximum
B. Minimum
C. Zero
D. Negative
8 In purely resistive A.C circuit, instantaneous value of voltage and current:
A. Current lags behind voltage
B. Current leads voltage by π/2
C. Both are in Phase
D. Voltage leads current by Pase θ=π/2
9 Direct current can not flow through.
A. Inductor
B. Resistor
C. Transistor
D. Capacitor
10 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

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