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 wave form of alternating voltage is a

Question # 2

The circuit which compares the two voltages is.

Question # 3

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

Question # 4

The A.M. transmission frequencies range from

Question # 5

The mean value of A.C. in a cycle is.

Question # 6

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

Question # 7

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

Question # 8

In RLC circuit the energy is dissipated in

Question # 9

Radio frequency choke is

Question # 10

At high frequency, the current through a capacitor is

Question # 11

The combined effect of resistance and reactance is knows as.

Question # 12

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

Question # 13

The main use of A.C is

Question # 14

At resonance, the behavior of R-L-C series circuit is.

Question # 15

In Pakistan the frequency of A.C. supply is.

Question # 16

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

Question # 17

Electro magnetic waves emitted from radio antenna are.

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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 The natural frequency of L.C circuit is equal to
3 when an inductor comes close to a metallic object, its inductance is.
A. Decreased
B. Increased
C. Becomes half
D. Becomes 4 times
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 circuit in which current and voltage are in phase, the power factor is:
A. Zero
B. 1
C. -1
D. 2
6 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
7 Vrms =
A. 0.7V∘
B.
0.07V∘
C. 0.007V∘
D. 0.75V∘
8 Which consumes small power.
A. Inductor
B. Resistor
C. Motor
D. All of these
9 The device which allows only the continuous flow of AC through it is.
A. Inductor
B. Battery
C. Thermistor
D. Capacitor
10 The reactance of inductor depends upon
A. L
D. All of the above

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