Hi friends, these are some of the multiple choice questions on electrical circuits. These are some of the basic questions which are asked in previous competitive papers check out and comment...
1) If the output resistance of a voltage source is 4 Ω, it internal resistance should be
A) 4 Ω
B) 8 Ω
C) 2 Ω
D) Infinite
Ans:A
2) The curve between current and frequency is termed as
A) Voltage curve
B) Gain curve
C) Power curve
D) Resonance curve
Ans:D
9) What is expected when two 20 kQ, l watt resistor in parallel are use instead of one 10 kQ, 1 watt?
A) Provides higher current
B) Provides less power
C) Provides more power
D) Provides wider tolerance
Ans:C
10) Which of the following materials has the lowest dielectric strength?
A) Glass
B) paper
C) Mica
D) Teflon
Ans:B
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1) If the output resistance of a voltage source is 4 Ω, it internal resistance should be
A) 4 Ω
B) 8 Ω
C) 2 Ω
D) Infinite
Ans:A
2) The curve between current and frequency is termed as
A) Voltage curve
B) Gain curve
C) Power curve
D) Resonance curve
Ans:D
3) What is the total effective capacitance of two 0.25 pl: c apacitors connected in series?
A) 0.125 µF
A) 0.125 µF
B) 1.25 µF
C) 0.50 µF
D) 2.5 µF
Ans:A
Ans:A
4) What can be used to estimate resonant frequency and to find reactance at any frequency for any value of capacitor or inductor?
A) Smith chart
B) Reactance chart
B) Reactance chart
C) Impedance chart
D) Resonance chart
Ans:B
Ans:B
5) For a parallel AC circuit, ............. is used as a reference phasor.
A) Voltage
A) Voltage
B) Power
C) Current
D) Resistance
Ans:A
Ans:A
6) For a series AC circuit, is not used as a reference phasor.
A) Voltage
A) Voltage
B) Impedance
C) Current
D) Conductance
Ans:A
Ans:A
7) If a certain circuit has a current that is lagging the voltage by 45°, then it displays
A) Pure inductive reactance
B) Resistance and capacitance reactance
C) Resistance and inductive reactance
C) Resistance and inductive reactance
D) Pure capacitive reactance
Ans:C
Ans:C
8) What maximum voltage can be applied across the capacitor for very short period of time?
A) Working voltage
B) Surge voltage
B) Surge voltage
C) Stray voltage
D) Peak voltage
Ans:B
Ans:B
A) Provides higher current
B) Provides less power
C) Provides more power
D) Provides wider tolerance
Ans:C
10) Which of the following materials has the lowest dielectric strength?
A) Glass
B) paper
C) Mica
D) Teflon
Ans:B
If you like my post please share it with your friends and subscribe to latest updates.. If you have doubts you can start new topic on forum and start discussion with our readers..
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