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

00:00
Question # 1

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

Question # 2

In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.

Question # 3

Electro magnetic waves emitted from radio antenna are.

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

In case of capacitor, the unit of reactance is

Question # 9

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

Question # 10

The unit of impedance is.

Question # 11

In frequency modulation, the amplitude of carrier waves is

Question # 12

In modulation, low frequency signal is known as

Question # 13

An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:

Question # 14

The reactance of inductor depends upon

Question # 15

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

Question # 16

The peak to peak value of alternating voltage is

Question # 17

The most common source of an A.C. Voltage 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 The circuit which compares the two voltages is.
A. LDR
B. Sensor
C. Comparator
D. Logic gate
2 The main reason for world wide use of A.C is because:
A. It is very high power 
B. It can be transmitted over long distance
C. It is cheaper to use
D. ALl of above
3 An A.C. voltmeter reads 220 V, its peak value will be
A. 225 V
B. 240 V
C. 311.12 V
D. 300 V
4 Phase difference between V and I of an A.C through resistor is.
A. Zero Degree
B. 90 o
C. 80o
D. 120o
5 The phase angle of a series RLC circult at resonant frequency is
A. 1/2
B. sigma
C. Zero
D. sigma /4
6 XL=
A. 2πfL
B. 1/2πfL
C. 2πfL
D. fL/2π
7 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
8 Electron vibrating 94,000 times each second will produce radio waves of frequency.
A. 94 Hz
B. 940 HZ
C. 94 Hz
D. 490 Hz
9 Power dissipation in A.C circuit is expressed as:
A. P =Irms x Vrms Sinθ
B. IxVCosθ
C. IrmsxVrmsCosθ
D. Irms x Vrms Sin2θ
10 Choke consumes extremely small
A. Current
B. Charge
C. Power
D. Potential

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