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

The Basic circuit element in a D.C. circuits which controls the current and voltage is

Question # 2

The phase difference between current and voltage in an inductive circuit is.

Question # 3

In AC system we generate sine wave form because:

Question # 4

A resistance frequency the impedance of RLC parallel circuit is.

Question # 5

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

Question # 6

In case of capacitor, the unit of reactance is

Question # 7

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

Question # 8

The device which allows only the flow of D.C. is.

Question # 9

X1is low for low frequency Fy but Xc is.

Question # 10

In three phase A.C supply coils are inclined at an angle of.

Question # 11

The circuit which compares the two voltages is.

Question # 12

In Series resonance circuit the impedance of circuit art resonance frequency, is

Question # 13

An alternating quantity (voltage or current) is completely known if we know its:

Question # 14

The main use of A.C is

Question # 15

XL=

Question # 16

Electro magnetic waves emitted from radio antenna are.

Question # 17

The effective value of any sinusoidal alternating current or voltage is

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 Vrms =
A. 0.7V∘
B.
0.07V∘
C. 0.007V∘
D. 0.75V∘
2 The highest value reached by the voltage or current in one cycle is called.
A. Peak ot peak value
B. Peak value
C. Instantaneous value
D. Root mean square value
3 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
4 The mean value of A.C. in a cycle is.
A. 1
B. 0
C. I2
D. Nil
5 Power dissipation is a pure inductive or in a pure capacitance circuit is:
A. 106
B. 0
C. 10∘
D. Maximum
6 The unit of impedance is
A. Farad
B. Henry
C. Tesla
D. Ohm
7 Impedance is denoted by:
A. A 
B. Z
C. P
D. Q
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 The wave form of alternating voltage is a
A. Cotangent curve
B. Cosine curve
C. Sine curve
D. Tangent curve
10 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

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