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

00:00
Question # 1

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

Question # 2

The value of capacitive reactance is given by

Question # 3

Power dissipation in A.C circuit is expressed as:

Question # 4

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

Question # 5

If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.

Question # 6

In an LRC circiut, the capacitance is made one-fourth, when an resonance . Then what should be change in inductance, so that the circuit remain in resonance?

Question # 7

The effective value of any sinusoidal alternating current or voltage is

Question # 8

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

Question # 9

Electro magnetic waves emitted from radio antenna are.

Question # 10

The device which allows only the continuous flow of AC through it is.

Question # 11

An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately

Question # 12

The reactance is the ratio of

Question # 13

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

Question # 14

In frequency modulation which factor changed.

Question # 15

In pure capacitor A.C. circuit, the current I and charge q are.

Question # 16

When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.

Question # 17

The peak value of A.C source is 20 A, then its rms value will be.

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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 The condition of resonance is:
A. XL = 1/2 Xc
B. XL = Xc
C. Xc = 4x2
D. None of above
3 In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.
A. Maximum
B. Minimum
C. Zero
D. Negative
4 In purely resistive A.C circuit, instantaneous value of voltage and current:
A. Current lags behind voltage
B. Current leads voltage by π/2
C. Both are in Phase
D. Voltage leads current by Pase θ=π/2
5 The electromagnetic spectrum contains
A. Radio waves
B. X-rays
C. Microwaves
D. All of these
6 If Vrms be the root mean square value of emf then its peak to peak value is given by
7 The most common source of an A.C. Voltage is.
A. Motor
B. Cell
C. Generator
D. Thermo couple
8 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
9 SI unit of reactance is.
A. Ohm
B. Mho
C. Farad
D. Henry
10 A resistance frequency the impedance of RLC parallel circuit is.
A. Zero
B. Infinite
C. Maximum
D. Minimum

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