Electrical Eng. · Question Bank

circuits

301 questions · page 9 of 16. Answer in your head first, then check the solution.

📘 EE Mock Board Exam
#161
In a complex number 5 + j10, 10 is called _____ part.
Aimaginary
Breal
Cconjugate
Dinteger
#162
The presence of an electric current is made known by
Aelectric shock
Beffects produced
Cmagnetic shock
Dflashing
#163
The reciprocal of a complex number is
Aa complex number
Ba real number
Can imaginary number
Da whole number
#164
Which of the following has negative temperature coefficient?
Acarbon
Bnickel
Cbrass
Dconstantan
#165
Which of the following is a common material used in wire-wound resistors?
Amanganin
Bcarbon
Cbronze
Dgerman silver wire
#166
If one resistance in a series connection is open, then
Athe current is zero in all other resistances
Bthe current is maximum in all the other resistances
Cthe voltage is zero across the open resistance
Dthe voltage is infinite across the open resistance
#167
For a carbon composition resistor, typical resistance values range from
A2.7 ohm(s) to 22 Mohm(s)
B1000 ohm(s) to 10000 ohm(s)
C10 ohm(s) to 10 Mohm(s)
D2.7 ohm(s) to 2.7 Gohm(s)
#168
An impedance given by 90 cis (-45 deg) is a/an _____ impedance.
Ainductive
Bconductive
Cresistive
Dcapacitive
#169
If a coil has a Q of 10, it means that
Athe energy stored in the magnetic field of the coil is 10 times the energy wasted in its resistance
Bthe energy wasted in its resistance is 10 times the energy stored in the magnetic field of the coil
Cit is a low Q coil
Dit is a high Q coil
#170
What is the rms value of the square value?
Aequals its peak value
Bequals its peak-to-peak value
Cpeak divided by square root of two
Dpeak divided by pi
#171
The rms value of a triangular or sawtooth waveform is _____ times its peak value.
A0.577
B0.500
C0.25
D0.707
#172
In a multiple capacitor, the plate area is
Aincreased
Bthe same
Cdecreased
Dvariable
#173
In an ac circuit, the power dissipated as heat depends on
Aimpedance
Bcapacitive reactance
Cresistance
Dinductive reactance
#174
Which of the following dielectric materials makes the lowest-capacitance capacitor?
Apaper
Bmica
Cair
Delectrolyte
#175
In adding or subtracting phasor quantities, _____ form is the most convenient.
Apolar
Brectangular
Ctrigonometric
Dexponential
#176
In dividing or multiplying phasor quantities, _____ form is used.
Apolar
Brectangular
Ctrigonometric
Dexponential
#177
The power factor of a circuit is equal to
ARZ
BXc/Z
CXl/Z
DR/Z
#178
The capacitance of a capacitor is _____ relative permittivity.
Adirectly proportional to
Binversely proportional to
Cequal to
Dinversely proportional to the square of
#179
Of the equivalent combination of units, which one is not equal to watt?
Aohm(s)^2/V
BAV
CA^2 * ohm(s)
DJ/s
#180
Ohm's law can be used only to a _____ circuit or component.
Aunilateral
Bexponential
Ctrivalent
Dlinear

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