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

The reactance is the ratio of

Question # 3

The effective value of any sinusoidal alternating current or voltage is

Question # 4

Power dissipation in A.C circuit is expressed as:

Question # 5

Phase difference between V and I of an A.C through resistor is.

Question # 6

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

Question # 7

XL=

Question # 8

In metal detector, we use.

Question # 9

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

Question # 10

The sum of positive and negative peak value called.

Question # 11

In a pure inductive A.C. circuit the current.

Question # 12

A capacitor is perfectly insulator for:

Question # 13

The expression P = VI hold only when current and voltage are.

Question # 14

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

Question # 15

Main reason for world wide use of A.C. is

Question # 16

In case of capacitor, the unit of reactance is

Question # 17

The phase angle of a series RLC circult at resonant frequency is

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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 Choke consumes extremely small
A. Current
B. Charge
C. Power
D. Potential
2 At high frequency, the current through a capacitor is
A. Small
B. Infinity
C. Zero
D. Large
3 If Vrms be the root mean square value of emf then its peak to peak value is given by
4 In case of capacitor, the unit of reactance is
A. Farad
B. Ohm
C. Newton
D. All of these
5 At resonance, the behavior of R-L-C series circuit is.
A. Resistive
B. Capacitive
C. Inductive
D. Modulative
6 In A.C circuit of inductor which one is true
A. Voltage leads current by phase angle π/2
B. Voltage lags current by π/2
C. Current leads voltage by π/2
D. Both remain in phase
7 The power factor of RL series circuit is.
A. 0
B. 1
C. Less then 1
D. More than one
8 The circuit which compares the two voltages is.
A. LDR
B. Sensor
C. Comparator
D. Logic gate
9 In chopke coil the resistance XL an resistance R are:
A. XL=R
B. XL<<R
C. XL>>R
D. XL=∞
10 Phase difference between V and I of an A.C through resistor is.
A. Zero Degree
B. 90 o
C. 80o
D. 120o

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