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) Metal tin becomes superconductor at approximately
A) 6 K
B) 3.7 K
C) 5 K
D) 4.7 K
Ans:B
2) In a complex resistance-reactance plane, XL is represented
A) By an axis opposite the R axis
B) By an axis perpendicular to the XC axis
C) By an axis opposite to the XC axis
D) By an axis parallel to the R axis
Ans:C
3) When the net reactance in a series coil-capacitor circuit is zero at frequency f, the nature of its reactance of frequency 2f is
A) Inductive
B) Capacitive
C) Resistive
D) Infinite
Ans:A
4) Which of the following is a way of decreasing mutual inductance?
A) Moving the coils closer
B) Moving the coils apart
C) Decreasing the number of turns of either coil
D) Increasing the number of turns of either coil
Ans:B
5) The charging of a capacitor through a resistance obeys
A) Exponential law
B) Logarithmic law
C) Linear law
D) Square law
Ans:A
6) The Q-factor of a parallel resonant circuit is also known as
A) Voltage magnification factor
B) Current magnification factor
C) Gain magnification factor
D) Resonance magnification factor
Ans:B
7) What is the specific resistance of a pure silicon?
A) 55 Ω-mm
B) 55 Ω-m
C) 55 Ω-cm
D) 55 kΩ-m
Ans:C
8) A capacitance of 0.05 uF equals
A) 0.05 ✖ 10^6 F
B) 0.05 ✖ 10^-6 F
C) 0.05 X 10^-12 F
D) 0.05 X 10^12 F
Ans:B
9) A 5 uF capacitor charge to 5V has a stored charge equal to
A) l µc
B) 5 µc
C) 25 µc
D) 200 µc
Ans:C
10) The factor 0.707 for converting peak to rms applies only to
A) Square waves
B) Triangle waves
C) Sawtooth Waves
D) Sine waves
Ans:D
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1) Metal tin becomes superconductor at approximately
A) 6 K
B) 3.7 K
C) 5 K
D) 4.7 K
Ans:B
2) In a complex resistance-reactance plane, XL is represented
A) By an axis opposite the R axis
B) By an axis perpendicular to the XC axis
C) By an axis opposite to the XC axis
D) By an axis parallel to the R axis
Ans:C
3) When the net reactance in a series coil-capacitor circuit is zero at frequency f, the nature of its reactance of frequency 2f is
A) Inductive
B) Capacitive
C) Resistive
D) Infinite
Ans:A
4) Which of the following is a way of decreasing mutual inductance?
A) Moving the coils closer
B) Moving the coils apart
C) Decreasing the number of turns of either coil
D) Increasing the number of turns of either coil
Ans:B
5) The charging of a capacitor through a resistance obeys
A) Exponential law
B) Logarithmic law
C) Linear law
D) Square law
Ans:A
6) The Q-factor of a parallel resonant circuit is also known as
A) Voltage magnification factor
B) Current magnification factor
C) Gain magnification factor
D) Resonance magnification factor
Ans:B
7) What is the specific resistance of a pure silicon?
A) 55 Ω-mm
B) 55 Ω-m
C) 55 Ω-cm
D) 55 kΩ-m
Ans:C
8) A capacitance of 0.05 uF equals
A) 0.05 ✖ 10^6 F
B) 0.05 ✖ 10^-6 F
C) 0.05 X 10^-12 F
D) 0.05 X 10^12 F
Ans:B
9) A 5 uF capacitor charge to 5V has a stored charge equal to
A) l µc
B) 5 µc
C) 25 µc
D) 200 µc
Ans:C
10) The factor 0.707 for converting peak to rms applies only to
A) Square waves
B) Triangle waves
C) Sawtooth Waves
D) Sine waves
Ans:D
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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