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) In a multiple capacitor, the plate area is
A) Increased
B) The same
C) Decreased
D) Variable
Ans:A
2) What is the time constant for L of 240 mH in series with R of 20 Q?
A) 12 ms
B) 4.8 s
C) 83.3 s
D) 12 s
Ans:A
3) In an ac circuit, the power dissipated as heat depends on
A) Impedance
B) Capacitive reactance
C) Resistance
D) Inductive reactance
Ans:C
4) Which of the following dielectric materials makes the lowest-capacitance capacitor?
A) Paper
B) Mica
C) Air
D) Electrolyte
Ans:C
5) In adding or subtracting phasor quantities, ................form is the most convenient.
A) Polar
B) Rectangular
C) Trigonometric
D) Exponential
Ans:B
6) In dividing or multiplying phasor quantities, _ form is used.
A) Polar
B) Rectangular
C) Trigonometric
D) Exponential
Ans:A
7) The power factor of a circuit is equal to
A) RZ
B) XC/Z
C) XL/Z
D) R/Z
Ans:D
8) The capacitance of a capacitor is ..................... relative permittivity.
A) Directly proportional to
B) Inversely proportional to
C) Equal to
D) Inversely proportional to the square of
Ans:A
9) If a multiplate capacitor has l0 plates, each of area l0 cm^2, then
A) 10 capacitors will be in parallel
B) 10 capacitors will be in series
C) 9 capacitors will be in parallel
D) 9 capacitors Will be in series
Ans:C
10) Of the equivalent combination of units, which one is not equal to watt?
A) Ω^2/V
B) AV
C) A^2Ω
D) J/S
Ans:A
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1) In a multiple capacitor, the plate area is
A) Increased
B) The same
C) Decreased
D) Variable
Ans:A
2) What is the time constant for L of 240 mH in series with R of 20 Q?
A) 12 ms
B) 4.8 s
C) 83.3 s
D) 12 s
Ans:A
3) In an ac circuit, the power dissipated as heat depends on
A) Impedance
B) Capacitive reactance
C) Resistance
D) Inductive reactance
Ans:C
4) Which of the following dielectric materials makes the lowest-capacitance capacitor?
A) Paper
B) Mica
C) Air
D) Electrolyte
Ans:C
5) In adding or subtracting phasor quantities, ................form is the most convenient.
A) Polar
B) Rectangular
C) Trigonometric
D) Exponential
Ans:B
6) In dividing or multiplying phasor quantities, _ form is used.
A) Polar
B) Rectangular
C) Trigonometric
D) Exponential
Ans:A
7) The power factor of a circuit is equal to
A) RZ
B) XC/Z
C) XL/Z
D) R/Z
Ans:D
8) The capacitance of a capacitor is ..................... relative permittivity.
A) Directly proportional to
B) Inversely proportional to
C) Equal to
D) Inversely proportional to the square of
Ans:A
9) If a multiplate capacitor has l0 plates, each of area l0 cm^2, then
A) 10 capacitors will be in parallel
B) 10 capacitors will be in series
C) 9 capacitors will be in parallel
D) 9 capacitors Will be in series
Ans:C
10) Of the equivalent combination of units, which one is not equal to watt?
A) Ω^2/V
B) AV
C) A^2Ω
D) J/S
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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