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Online Tests
Ics Part 2 Physics Chapter 5 Test Online MCQs With Answers
Question # 1
When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.
Choose an answer
100 Ohm
10 Ohm
1000 Ohm
1 Ohm
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Question # 2
In metal detector, we use.
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L-C circuit
R-L circuit
R-C circuit
RLC series circuit
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Question # 3
SI unit of reactance is.
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Ohm
Mho
Farad
Henry
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Question # 4
The slope of q-t curve at any instant of time gives.
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Voltage
Current
Charge
Botha a and b
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Question # 5
At high frequency, the current through a capacitor is
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Small
Infinity
Zero
Large
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Question # 6
The phase angle of a series RLC circult at resonant frequency is
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1/2
sigma
Zero
sigma /4
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Question # 7
The most common source of an A.C. Voltage is.
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Motor
Cell
Generator
Thermo couple
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Question # 8
In a pure inductive A.C. circuit the current.
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Lags behind voltage by 90
o
Leads the voltage by 90
o
In phase with voltage
Leads the voltage by 270
o
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Question # 9
In chopke coil the resistance X
L
an resistance R are:
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X
L
=R
X
L
<<R
X
L
>>R
X
L
=
∞
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Question # 10
The inductive reactance of a coil is direction proportional to.
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Inductance
Resistance
Frequency of A.C.
Both frequency of A.C. and inductance
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Question # 11
Radio frequency choke is
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Iron cored
Air Cored
Air as well as iron cored
None of these
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Question # 12
At resonance, the behavior of R-L-C series circuit is.
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Resistive
Capacitive
Inductive
Modulative
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Question # 13
Phase difference between V and I of an A.C through resistor is.
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Zero Degree
90
o
80
o
120
o
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Question # 14
The combined effect of resistance and reactance is knows as.
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Inductance
Conductance
Resistance
Impedance
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Question # 15
An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately
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50 Hz
100 Hz
80 Hz
120 Hz
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Question # 16
The AC system is preferred to DC system because:
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AC voltage can be easily changed in magnitude
DC motor angular velocity is affected badly
High voltage AC transmission is less efficient
Domestic appliance require AC voltage for their operation
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Question # 17
The circuit in which current and voltage are in phase, the power factor is:
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Zero
1
-1
2
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