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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Physics ICS Part 2 Chapter 16 Online MCQ's Test

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Question # 1

In A.C circuit of inductor which one is true

Question # 2

In three phase A.C. generator the phase difference between each pair of coil is.

Question # 3

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

Question # 4

An A.C. voltmeter reads 220 V, its peak value will be

Question # 5

Power dissipation in A.C circuit is expressed as:

Question # 6

In three phase voltage across any two lines is about.

Question # 7

In metal detector, we use.

Question # 8

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

Question # 9

The wave form of alternating voltage is a

Question # 10

The sum of positive and negative peak value called.

Question # 11

The effective value of any sinusoidal alternating current or voltage is

Question # 12

The peak value of alternating current is 5√2 A. The mean square value of current will be:

Question # 13

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

Question # 14

The combined effect of resistance and reactance in circuit is called:

Question # 15

The peak to peak value of alternating voltage is

Question # 16

In AC system we generate sine wave form because:

Question # 17

X1is low for low frequency Fy but Xc 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 flow of D.C current is opposed by
A. Resistor
B. Induction
C. Capacitor
D. All 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 An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately
A. 50 Hz
B. 100 Hz
C. 80 Hz
D. 120 Hz
4 An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:
A. 50 Hz
B. 25Hz
C. 100 Hz
D. 75 Hz
5 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
6 The highest value reached by the voltage or current is one cycle is called:
A. Peak to peak value
B. Peak value
C.
Instantaneous value
D. Root mean square value
7 Average value of current and voltage over a complete cycle is.
A. Positive
B. Negative
C. Zero
D. Infinite
8 The A.M. transmission frequencies range from
A. 540 KHz to 1000 KHz
B. 540 Khz to 1600 KHz
C. 520 KHz TO 1600 KHz
D. 520 KHz TO 1400 KHz
9 In case of A.C. through resistor V and I are
A. At 0 o with each other
B. At 180 o with each other
C. At 90 o with each other
D. At 270 o with each other
10 The main use of A.C is
A. Minimum line losses
B. Long distance transmission
C. Stepping up to required voltage only
D. Steeping down to required voltage only

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