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

Question # 2

If Vrms be the root mean square value of emf then its peak to peak value is given by

Question # 3

The combined effect of resistance and reactance is knows as.

Question # 4

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

Question # 5

During each cycle A.C. voltage reaches a peak value.

Question # 6

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

Question # 7

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

Question # 8

In three phase A.C. generator the phase difference between each pair of coil is.

Question # 9

The power factor of RL series circuit is.

Question # 10

The internal resistance of a capacitor is called:

Question # 11

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

Question # 12

An in cudutor may store energy in

Question # 13

The value of capacitive reactance is given by

Question # 14

The electromagnetic spectrum contains

Question # 15

The circuit in which current and voltage are in phase, the power factor is:

Question # 16

At high frequency the value of reactance of capacitor will be.

Question # 17

Direct current can not flow through.

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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 phase difference between current and voltage in an inductive circuit is.
A. zero
B. 90 o
C. 180 o
D. 45o
2 A resistance frequency the impedance of RLC parallel circuit is.
A. Zero
B. Infinite
C. Maximum
D. Minimum
3 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
4 Power dissipation is a pure inductive or in a pure capacitance circuit is:
A. 106
B. 0
C. 10∘
D. Maximum
5 The condition of resonance is:
A. XL = 1/2 Xc
B. XL = Xc
C. Xc = 4x2
D. None of above
6 At high frequency the value of reactance of capacitor will be.
A. Small
B. Zero
C. Large
D. Infinite
7 The peak to peak value of alternating voltage is
A. 2Vo
B. Vo
D. None of these
8 The circuit which compares the two voltages is.
A. LDR
B. Sensor
C. Comparator
D. Logic gate
9 The sum of positive and negative peak value called.
A. R.M.S. value
B. P-P value
C. Peak value
D. Average value
10 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

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