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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MCQ's Test For Chapter 0 "Physics ICS Part 2 Chapter 16 Online MCQ's Test"

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  • Total Questions17

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Physics ICS Part 2 Chapter 16 Online MCQ's Test

00:00
Question # 1

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

Question # 2

The wave form of alternating voltage is a

Question # 3

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

Question # 4

The slope of q-t curve at any instant of time gives.

Question # 5

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

Question # 6

An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately

Question # 7

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

Question # 8

Main reason for world wide use of A.C. is

Question # 9

In three phase voltage across any two lines is about.

Question # 10

when an inductor comes close to a metallic object, its inductance is.

Question # 11

A capacitor is perfectly insulator for:

Question # 12

SI unit of reactance is.

Question # 13

The device which allows only the continuous flow of AC through it is.

Question # 14

A resistance frequency the impedance of RLC parallel circuit is.

Question # 15

The AC system is preferred to DC system because:

Question # 16

Impedance is denoted by:

Question # 17

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

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16th Chapter

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 XL=
A. 2πfL
B. 1/2πfL
C. 2πfL
D. fL/2π
2 The slope of q-t curve at any instant of time gives.
A. Voltage
B. Current
C. Charge
D. Botha a and b
3 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)
4 The wave form of alternating voltage is a
A. Cotangent curve
B. Cosine curve
C. Sine curve
D. Tangent curve
5 The AC system is preferred to DC system because:
A. AC voltage can be easily changed in magnitude
B. DC motor angular velocity is affected badly
C. High voltage AC transmission is less efficient
D. Domestic appliance require AC voltage for their operation
6 The resonance frequency is given by:
A. fr = 2π√LC
B. fr = 1/2πLC
C. fr = 1/ 2π√LC
D. f1 = 1/ 2πC√L
7 Vrms =
A. 0.7V
B.
0.07V
C. 0.007V
D. 0.75V
8 The peak value of alternating current is 5√2 A. The mean square value of current will be:
A. 5A
B. 2.5A
C. 5√2A
D. 52
9 Which consumes small power.
A. Inductor
B. Resistor
C. Motor
D. All of these
10 In Pakistan the frequency of A.C. supply is.
A. 50 Hz
B. 60 Hz
C. 45 Hz
D. 70 Hz

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