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) An alloy composed of 84 % copper, 12 % manganese and 4 % nickel.
A) Manganin
B) Constantan
C) Nichrome
D) German silver Wire
Ans:A
2) A law which states that when a constant electromotive force is applied to a circuit consisting of a resistor and capacitor connected in series, the time taken for the potential on the plates of the capacitor to rise to any given fraction of its final value depends only on the product of capacitance and resistance.
A) Child’s law
B) CR law
C) Coulomb’s law
D) Debye T3 law
Ans:B
3) At parallel resonance, the currents flowing through L and C are
A) Infinite
B) Zero
C) Unequal
D) Equal
Ans:D
4) In a rectangular wave, the peak factor is
A) 1.16
B) 1.73
C) 1.11
D) 1.0
Ans:D
5) In an RL series circuit,
A) Current lags voltage by less than 90°
B) Current lags voltage by 180°
C) Current lags voltage by 90°
D) Current leads voltage by 90°
Ans:A
6) In a pure capacitance,
A) Current leads voltage by 90°
B) Current leads voltage by 180°
C) Current lags voltage by 90°
D) Current lags voltage by 180°
Ans:A
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1) An alloy composed of 84 % copper, 12 % manganese and 4 % nickel.
A) Manganin
B) Constantan
C) Nichrome
D) German silver Wire
Ans:A
2) A law which states that when a constant electromotive force is applied to a circuit consisting of a resistor and capacitor connected in series, the time taken for the potential on the plates of the capacitor to rise to any given fraction of its final value depends only on the product of capacitance and resistance.
A) Child’s law
B) CR law
C) Coulomb’s law
D) Debye T3 law
Ans:B
3) At parallel resonance, the currents flowing through L and C are
A) Infinite
B) Zero
C) Unequal
D) Equal
Ans:D
4) In a rectangular wave, the peak factor is
A) 1.16
B) 1.73
C) 1.11
D) 1.0
Ans:D
5) In an RL series circuit,
A) Current lags voltage by less than 90°
B) Current lags voltage by 180°
C) Current lags voltage by 90°
D) Current leads voltage by 90°
Ans:A
6) In a pure capacitance,
A) Current leads voltage by 90°
B) Current leads voltage by 180°
C) Current lags voltage by 90°
D) Current lags voltage by 180°
Ans:A
7) The ohmic value of a resistor with negative temperature coefficient
A) Increases with increasing temperature
B) Increases with decreasing temperature
C) Stays unchanged with temperature change
D) Stays unaffected even with increasing temperature
Ans:B
8) Which of the statements below is not true?
A) Current source is an active element
B) Resistor is a linear element
C) Voltage source is a passive element
D) Diode is a non-linear element
Ans:C
9) Which of the following elements is active?
A) Resistor
B) Inductor
C) Capacitor
D) Ideal voltage source
Ans:D
10) What is the complex impedance of a circuit with an absolute resistance of 300 Q?
A) 0 + j 300 Ω
B) 300 + j 90 Ω
C) 0 - j 300 Ω
D) 300 + j 0 Ω
Ans:D
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