Electrical Engineering · Question Bank

circuits

301 questions · page 2 of 16. Answer in your head first, then check the solution.

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#21
Which component opposes voltage change?
Aresistor
Binductor
Ccapacitor
Dtransistor
#22
What is the peak factor for alternating current or voltage varying sinusoidally
A1.4142
B0.707
C0.636
D1.11
#23
Which of the following is not a factor affecting dielectric strength?
Amass
Bmoisture content
Ctemperature
Dthickness
#24
The superposition theorem is used when the circuit contains a/an
Areactive elements
Bactive elements
Cnumber of voltage sources
Dsingle voltage source
#25
What refers to such work at very low temperatures, near absolute zero?
Acryogenics
Bsuperconductivity
Csubsonic
Dthermionic
#26
A factor that states how much the resistance changes for a change in temperature.
Aresistivity
Bspecific resistance
Ccoefficient of temperature change
Dtemperature coefficient of resistance
#27
An alloy composed of 80% copper
AManganin
BConstantan
CNichrome
DGerman silver wire
#28
At parallel resonance, the currents flowing through L and C are
Ainfinite
Bzero
Cunequal
Dequal
#29
In a rectangular wave, the peak factor is
A1.16
B1.73
C1.11
D1.0
#30
In an RL series circuit
Acurrent lags voltage by less than 90 degrees
Bcurrent leads voltage by 180 degrees
Ccurrent lags voltage by 90 degrees
Dcurrent lags voltage by 180 degrees
#31
In a pure capacitance,
Acurrent leads voltage by 90 degrees
Bcurrent lags voltage by 90 degrees
Ccurrent lags voltage by 90 degrees
Dcurrent lags voltage by 180 degrees
#32
The ohmic value of a resistor with negative temperature coefficient
Aincreases with increasing temperature
Bincreases with decreasing temperature
Cstays unchanged with temperature change
Dstays unaffected even with increasing temperature
#33
Which of the following elements is active?
Aresistor
Binductor
Ccapacitor
Dideal voltage source
#34
A law which states that when a constant electromotive force is applied to a circuit consisting of a resistor and a 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 reactance.
AChild's law
BCR law
CCoulomb's law
DDebye T^3 law
#35
Conventional flow assumes charges flow from
Apositive to negative
Bpositive to positive
Cnegative to positive
Dnegative to negative
#36
Electron flow assumes charges flow from
Anegative to positive
Bnegative to negative
Cpositive to negative
Dpositive to positive
#37
Series resonance occurs when
AXl=Xc
BXl=R
CZ=R
DBoth Xl=Xc and Z=R
#38
The symbol Q refers to
Aresonance quotient
Bquality factor
Cpower quotient
Dqualification test
#39
The ratio of W/VA in an ac circuit means
Apower factor
Breactive factor
Cquality factor
Dload factor
#40
What is the reciprocal of quality factor?
Apower factor
Breactive factor
Cdissipation factor
D1/Q factor

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