2nd Year Physics Chapter 16 Online MCQ Test for 12th Class Physics Chapter 16 (Alternating Current)

ICS Part 2 Physics
Chapter 16 Test

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Physics ICS Part 2 Chapter 16 Online MCQ's Test

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Question # 1

The natural frequency of L.C circuit is equal to

Question # 2

The wave form of alternating voltage is a

Question # 3

The internal resistance of a capacitor is called:

Question # 4

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

Question # 5

X1is low for low frequency Fy but Xc is.

Question # 6

The A.M. transmission frequencies range from

Question # 7

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

Question # 8

The inductive reactance of a coil is direction proportional to.

Question # 9

In three phase voltage across any two lines is about.

Question # 10

Electron vibrating 94,000 times each second will produce radio waves of frequency.

Question # 11

In metal detector, we use.

Question # 12

An in cudutor may store energy in

Question # 13

Which consumes small power.

Question # 14

At high frequency the value of reactance of capacitor will be.

Question # 15

The peak to peak value of alternating voltage is

Question # 16

During each cycle A.C. voltage reaches a peak value.

Question # 17

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

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ICS 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 frequency modulation, the amplitude of carrier waves is
A. Increases
B. Remains constant
C. Decreases
D. None of these
2 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
3 The phase difference between the current and voltage at resonce is:
A. 0
B. π
C. -π
D. π/2
4 The device which allows only the continuous flow of AC through it is.
A. Inductor
B. Battery
C. Thermistor
D. Capacitor
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 X1is low for low frequency Fy but Xc is.
A. Zero
B. Low
C. High
D. Same is H
7 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
8 The condition of resonance is:
A. XL = 1/2 Xc
B. XL = Xc
C. Xc = 4x2
D. None of above
9 Unit of impedance is:
A. Ohm
B. Ohm-1
C. no unit
D. Ohm m-1
10 XL=
A. 2πfL
B. 1/2πfL
C. 2πfL
D. fL/2π

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