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

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Question # 1

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

Question # 2

The effective value of any sinusoidal alternating current or voltage is

Question # 3

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

Question # 4

The circuit which compares the two voltages is.

Question # 5

In three phase voltage across any two lines is about.

Question # 6

SI unit of reactance is.

Question # 7

The value of capacitive reactance is given by

Question # 8

Choke consumes extremely small

Question # 9

If Io is the peak value of current, then its root mean square value is given by

Question # 10

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

Question # 11

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

Question # 12

XL=

Question # 13

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

Question # 14

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

Question # 15

The natural frequency of L.C circuit is equal to

Question # 16

Electro magnetic waves emitted from radio antenna are.

Question # 17

Resistance of choke 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 value of capacitive reactance is given by
A. Xc = VI
B. xc= 1/wc or xc= wL
C. xc= 1*wc or xc=Lw
D. All of above
2 when an inductor comes close to a metallic object, its inductance is.
A. Decreased
B. Increased
C. Becomes half
D. Becomes 4 times
3 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
4 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
5 Vrms =
A. 0.7V∘
B.
0.07V∘
C. 0.007V∘
D. 0.75V∘
6 The phase angle of a series RLC circult at resonant frequency is
A. 1/2
B. sigma
C. Zero
D. sigma /4
7 In frequency modulation which factor changed.
A. Amplitude of charge carriers
B. Frequency of charge carriers
C. Amplitude of signal
D. Frequency of signal
8 The electromagnetic spectrum contains
A. Radio waves
B. X-rays
C. Microwaves
D. All of these
9 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
10 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

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