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.Management Sciences
Category: Electrical Engineering Mcqs
Cables for 220 kV lines are invariably____________?
A. mica insulated
B. paper insulated
C. compressed oil or compressed gas insulated
D. rubber insulated
E. none of the above
In radio transmission, the medium of transmission is ________________?
A. Space
B. An antenna
C. Cable
D. None of the above
For commutation in three phase PAC, normally balanced three phase voltages VR, VY and VB are connected to the three legs of the converter via______________?
A. Three inductances
B. Three capacitances
C. Three resistance
D. Three transistors
For radiant heating around 2250°C, the heating elements are made of____________?
A. copper alloy
B. carbon
C. tungsten alloy
D. stainless steel alloy
What will happen to an insulating medium if voltage more than the breakdown voltage is applied on it__________ ?
A. It will become magnetic
B. It will melt
C. It will get punctured or cracked
D. Its molecular structure will get changed
A certain p-channel E-MOSFET has VGS(th) = -2V. If VGS= 0V, the drain current is ____________?
A. 0 mA
B. ID(on)
C. maximum
D. IDSS
A.C. servomotor is basically a____________?
A. universal motor
B. single phase induction motor
C. two phase induction motor
D. three phase induction motor
In all base driver amplifiers__________?
A. ac collector voltage is 180° out of phase with ac base voltage
B. ac emitter voltage is 180° out of phase with ac base voltage
C. ac collector voltage is in phase with ac base voltage
D. none of the above
The positive clipper is that which removes the ____________half-cycles of the input voltage?
A. Negative
B. Positive
C. Both positive and negative
D. None of the above
The direction of rotation of a D.C. series motor can be changed by___________?
A. interchanging supply terminals
B. interchanging field terminals
C. either of A. and B. above
D. None of the above
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