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) When two in-phase sine Waves that have identical frequency and amplitude are added together, then the result is a sine Wave with _ the amplitude of either.
A) Half
B) Twice
C) Four times
D) One-fourth
Ans:B
2) Liquids that are good conductors because of ionization are called
A) Electrolytic
B) Bases
C) Acid
D) Electrolytes
Ans:D
3) Tungsten filament of bulbs has a hot resistance higher than its cold resistance due to its temperature coefficient which is
A) Positive
B) Negative
C) Zero
D) Infinite
Ans:A
4) A term used to express the amount of electrical energy stored in electrostatic field.
A) Joules
B) Coulombs
C) Watts
D) Electron-volt
Ans:A
5) With double the number of turns by the same length and area, the inductance is
A) The same
B) Doubled
C) Quartered
D) Quadrupled
Ans:D
6) The temperature coefficient of resistance of electrolytes is
A) Negative
B) Positive
C) Zero
D) Infinite
Ans:A
7) What refers to the lowest voltage across any insulator that can cause current flow?
A) Conduction voltage
B) Critical voltage
C) Breakdown voltage
D) Voltage capacity
Ans:C
8) Capacitance increase with
A) Larger plate area and less distance between plates
B) Larger plate area and greater distance between plates
C) Smaller plate area and less distance between plates
D) Higher values of applied voltage
Ans:A
9) What is the resonant frequency of a circuit when L of 3 microhenrys and C of 40 picofarads are in series?
A) 14.5 kHz
B) 145 MHZ
C) 14.5 MHz
D) 145 kHz
Ans:C
10) For a triangular and sawtooth waveform the rms voltage or current equals
A) 0.707 times peak value
B) 0.577 times peak value
C) 0.577 times average value
D) 0.707 times rms value
Ans:B
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1) When two in-phase sine Waves that have identical frequency and amplitude are added together, then the result is a sine Wave with _ the amplitude of either.
A) Half
B) Twice
C) Four times
D) One-fourth
Ans:B
2) Liquids that are good conductors because of ionization are called
A) Electrolytic
B) Bases
C) Acid
D) Electrolytes
Ans:D
A) Positive
B) Negative
C) Zero
D) Infinite
Ans:A
4) A term used to express the amount of electrical energy stored in electrostatic field.
A) Joules
B) Coulombs
C) Watts
D) Electron-volt
Ans:A
5) With double the number of turns by the same length and area, the inductance is
A) The same
B) Doubled
C) Quartered
D) Quadrupled
Ans:D
6) The temperature coefficient of resistance of electrolytes is
A) Negative
B) Positive
C) Zero
D) Infinite
Ans:A
7) What refers to the lowest voltage across any insulator that can cause current flow?
A) Conduction voltage
B) Critical voltage
C) Breakdown voltage
D) Voltage capacity
Ans:C
8) Capacitance increase with
A) Larger plate area and less distance between plates
B) Larger plate area and greater distance between plates
C) Smaller plate area and less distance between plates
D) Higher values of applied voltage
Ans:A
9) What is the resonant frequency of a circuit when L of 3 microhenrys and C of 40 picofarads are in series?
A) 14.5 kHz
B) 145 MHZ
C) 14.5 MHz
D) 145 kHz
Ans:C
10) For a triangular and sawtooth waveform the rms voltage or current equals
A) 0.707 times peak value
B) 0.577 times peak value
C) 0.577 times average value
D) 0.707 times rms value
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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