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 flow of D.C current is opposed by

Question # 2

At resonance frequency, the impedance of RLC series circuit is.

Question # 3

when an inductor comes close to a metallic object, its inductance is.

Question # 4

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

Question # 5

Power dissipation is a pure inductive or in a pure capacitance circuit is:

Question # 6

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

Question # 7

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

Question # 8

In frequency modulation which factor changed.

Question # 9

The electromagnetic spectrum contains

Question # 10

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

Question # 11

The combined effect of resistance and reactance in circuit is called:

Question # 12

In LR circiut which one of the following statements is correct?

Question # 13

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

Question # 14

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

Question # 15

At high frequency, the current through a capacitor is

Question # 16

The value of capacitive reactance is given by

Question # 17

In metal detector, we use.

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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 Resistance of choke is
A. zero
B. Large
C. Very small
D. Infinite
2 The combined effect of resistance and reactance is knows as.
A. Inductance
B. Conductance
C. Resistance
D. Impedance
3 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
4 The reactance is the ratio of
A. Vrms/Irms
B. Vrms x Irms
C. Irms/Vrms
D. Vmax x Vrms
5 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth
6 In RLC circuit the energy is dissipated in
A. R only
B. R and L
C. R and C
D. L and C
7 when an inductor comes close to a metallic object, its inductance is.
A. Decreased
B. Increased
C. Becomes half
D. Becomes 4 times
8 The sum of positive and negative peak value called.
A. R.M.S. value
B. P-P value
C. Peak value
D. Average value
9 The mean value of A.C. in a cycle is.
A. 1
B. 0
C. I2
D. Nil
10 The peak value of A.C source is 20 A, then its rms value will be.
A. 14.1 A
B. 10 A
C. 20 A
D. 28.2 A

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