A. R and C in series but with diode across C
B. R and C in series but with diode across R
C. Series R and diode with C across R
D. Series R and diode with C across R
Electrical Engineering Mcqs
Magnetic moment is a_____________?
A. pole strength
B. universal constant
C. scalar quantity
D. vector quantity
Load curve is useful in deciding the__________?
(a) A. operating schedule of generating units
B. sizes of generating units
C. total installed capacity of the plant
D. all of the above
The power factor of industrial loads is generally______________?
A. unity
B. lagging
C. leading
D. zero
An important advantage of a synchronous motor over wound round induction motor is that
A. its power factor may be varied at will
B. its speed is independent of supply frequency
C. its speed may be controlled more easily
D. none of the above
A Zener diode that has very narrow depletion layer will breakdown by____________ mechanism?
A. Avalanche
B. Zener
C. Both avalanche and Zener
D. None of the above
Which of the following is used in heat sink_____________?
A. Iron
B. Aluminium
C. Carbon
D Silver
In a 3-phase power measurement by two wattmeter method, both the watt meters had identical readings. The power factor of the load was___________?
A. unity
B. 0.8 lagging
C. 0.8 leading
D. zero
In D.C. generators, the cause of rapid brush wear may be___________?
A. severe sparking
B. rough commutator surface
C. imperfect contact
D. any of the above
Two coils have self-inductances of 10 H and 2 H, the mutual inductance being zero. If the two coils are connected in series, the total inductance will be_____________?
A. 6 H
B. 8 H
C. 12 H
D. 24 H
