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Online Tests
Ics Part 2 Physics Chapter 5 Test Online MCQs With Answers
Question # 1
The A.M. transmission frequencies range from
Choose an answer
540 KHz to 1000 KHz
540 Khz to 1600 KHz
520 KHz TO 1600 KHz
520 KHz TO 1400 KHz
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Question # 2
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 # 3
In case of capacitor, the unit of reactance is
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Farad
Ohm
Newton
All of these
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Question # 4
The basic circuit element in A.C. circuit which controls current.
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Resistor only
Capacitor only
Inductor only
All of these
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Question # 5
The resonance frequency is given by:
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fr = 2π√LC
fr = 1/2πLC
fr = 1/ 2π√LC
f1 = 1/ 2πC√L
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Question # 6
In case of A.C. through resistor V and I are
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At 0
o
with each other
At 180
o
with each other
At 90
o
with each other
At 270
o
with each other
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Question # 7
Power dissipated in a pure inductor is.
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Large
Small
Infinite
Zero
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Question # 8
An A.C. voltmeter reads 220 V, its peak value will be
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225 V
240 V
311.12 V
300 V
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Question # 9
In LR circiut which one of the following statements is correct?
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L and R opposes each other
R value increases with frequency
The inductive reactance increases with frequency
The inductive reactance decreases with frequency
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Question # 10
The peak value of A.C source is 20 A, then its rms value will be.
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14.1 A
10 A
20 A
28.2 A
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Question # 11
In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.
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Maximum
Minimum
Zero
Negative
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Question # 12
An in cudutor may store energy in
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Its magnetic field
Its coil
Its electric field
A neighboring circuit
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Question # 13
The phase difference between current and voltage in an inductive circuit is.
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zero
90
o
180
o
45
o
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Question # 14
In RLC circuit the energy is dissipated in
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R only
R and L
R and C
L and C
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Question # 15
when an inductor comes close to a metallic object, its inductance is.
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Decreased
Increased
Becomes half
Becomes 4 times
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Question # 16
The sum of positive and negative peak value called.
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R.M.S. value
P-P value
Peak value
Average value
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Question # 17
The highest value reached by the voltage or current in one cycle is called.
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Peak ot peak value
Peak value
Instantaneous value
Root mean square value
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Question # 18
The phase difference between the current and voltage at resonce is:
Choose an answer
0
π
-
π
π/2
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