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

00:00
Question # 1

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

Question # 2

The peak to peak value of alternating voltage is

Question # 3

In A.C circuit through a capacitor which one is:

Question # 4

At high frequency, the current through a capacitor is

Question # 5

The circuit which compares the two voltages is.

Question # 6

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

Question # 7

The flow of D.C current is opposed by

Question # 8

The basic circuit element in A.C. circuit which controls current.

Question # 9

The unit of impedance is.

Question # 10

Impedance is denoted by:

Question # 11

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

Question # 12

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

Question # 13

In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is.

Question # 14

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

Question # 15

High frequency radio wave is called as

Question # 16

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

Question # 17

The mean value of A.C. in a cycle 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 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
2 Impedance is denoted by:
A. A 
B. Z
C. P
D. Q
3 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
4 Choke consumes extremely small
A. Current
B. Charge
C. Power
D. Potential
5 A capacitor is perfectly insulator for:
A. Direct current
B. Alternating current
C. Direct as well as alternating current
D. None of these
6 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth
7 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
8 when an inductor comes close to a metallic object, its inductance is.
A. Decreased
B. Increased
C. Becomes half
D. Becomes 4 times
9 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
10 In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is.
A. 90o
B. 270o
C. 0o
D. 180o

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