Engineering
Engineering MCQs With Answers
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The Fourier Transform of a continuous-time Dirac Delta function delta(t) is equal to:
A1
B0
C2 * pi
D1 / s
The maximum theoretical conversion efficiency of a Class B push-pull power amplifier is approximately:
A50.0%
B25.0%
C90.0%
D78.5%
Common Mode Rejection Ratio (CMRR) of an ideal Op-Amp is:
AUnity
BInfinite
CZero
D100
The voltage gain of an inverting operational amplifier circuit with feedback resistor R_f and input resistor R_in is:
A-R_f / R_in
B-R_in / R_f
C1 + (R_f / R_in)
DR_in / R_f
The standard secondary current rating for a Current Transformer (CT) used in power system protection is usually:
A0.1 A or 0.5 A
B1 A or 5 A
C10 A or 20 A
D100 A
Slew Rate of an operational amplifier (Op-Amp) is defined as the maximum rate of change of:
AInput voltage with respect to frequency
BOutput voltage with respect to time
CCommon-mode rejection ratio with frequency
DOpen-loop gain with respect to temperature
The operating characteristic of a Mho relay on an R-X diagram is a circle that:
AHas its center at the origin
BPasses through the origin
CDoes not intersect either axis
DEncloses the entire R-X plane
Where is the Buchholz relay physically mounted in an oil-immersed transformer installation?
AInside the conservator tank
BAt the bottom of the main oil tank
CIn the pipe connecting the main tank and the conservator tank
DOn top of the high-voltage bushings
The transient stability of a power transmission system can be improved by using:
ARemoving bundle conductors
BReducing system voltage
CHigh-speed circuit breakers and auto-reclosers
DIncreasing line reactance
In a symmetrical component transformation, zero-sequence current cannot flow in which transformer winding connection?
ADelta connection without ground
BSolidly grounded neutral star connection
CStar connection with low resistance grounding
DStar connection with grounded neutral