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) What is the other name of relative permittivity?
A) Dielectric strength
B) Potential gradient
C) Breakdown voltage
D) Specific inductance capacity
Ans:D
2) In a series RLC circuit
A) The current lags VL by 90°
B) The current leads VL by 90°
C) XL leads XC by 90°
D) Z = jXL at resonance
Ans:A
9) If three 9 mH inductors are connected in parallel without mutual inductance then the total inductance is
A) 3 mH
B) 9 mH
C) 27 mH
D) 18 mH
Ans:A
10) What is the specific resistance of a pure germanium?
A) 55 Ω-cm
B) 55 Ω-m
C) 55 Ω-mm
D) 55 kΩ-m
Ans:A
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1) What is the other name of relative permittivity?
A) Dielectric strength
B) Potential gradient
C) Breakdown voltage
D) Specific inductance capacity
Ans:D
2) In a series RLC circuit
A) The current lags VL by 90°
B) The current leads VL by 90°
C) XL leads XC by 90°
D) Z = jXL at resonance
Ans:A
3) Resistor with colored bands in the body
A) Wire-wound resistor
B) Carbon-Composition resistor
C) Potentiometer
D) Rheostat
Ans:B
4) In a resonant circuit, if Q 2 10 resonant frequency bandwidth.
A) Bisects
B) Exceeds
C) Is less than
D) Is equal to
Ans:A
5) Which of the following conditions is not true for a series RLC circuit at resonance?
A) Z = jXL
B) XL = XC
C) The power factor is one
D) The magnitude of Z is .√R2 +(XL — XC)2
Ans:A
6) The current is ..................times the maximum current at half-power points of a resonance curve.
A) 0.707
B) 1.414
C) 0.5
D) 0.632
Ans:A
7) A gang capacitor is a variable capacitor in which capacitance is varied by changing the
A) Dielectric
B) Number of plates
C) Plate area
D) Distance between plates
Ans:C
8) In an ac circuit with inductive reactance, the
A) Phase angle of the circuit is always 45°
B) Voltage across the inductance must be 90° out-of-phase with the applied voltage
C) Current through the inductance lags its induced voltage by 90°
D) Current through the inductance and voltage across it are l80° out-of-phase
Ans:C
A) 3 mH
B) 9 mH
C) 27 mH
D) 18 mH
Ans:A
10) What is the specific resistance of a pure germanium?
A) 55 Ω-cm
B) 55 Ω-m
C) 55 Ω-mm
D) 55 kΩ-m
Ans:A
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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