Top 150+ Solved Transmission and Distribution of Electrical Energy MCQ Questions Answer
Q. When the interconnector between two stations has large reactance
a. the transfer of power will take place with voltage fluctuation and noise
b. the transfer of power will take place with least loss
c. the stations will fall out of step be¬cause of large angular displacement between the stations
d. none of the above
Q. The frequency of voltage generated, in case of generators, can be increased by
a. using reactors
b. increasing the load
c. adjusting the governor
d. reducing the terminal voltage
Q. When an alternator connected to the bus-bar is shut down the bus-bar voltage will
a. fall
b. rise
c. remain unchanged
d. none of the above
Q. The angular displacement between two interconnected stations is mainly due to
a. armature reactance of both alternators
b. reactance of the interconnector
c. synchronous reactance of both the alternators
d. all of the above
Q. Electro-mechanical voltage regulators are generally used in
a. reactors
b. generators
c. transformers
d. all of the above
Q. Series capacitors on transmission lines are of little use when the load VAR requirement is
a. large
b. small
c. fluctuating
d. any of the above
Q. The voltage regulation in magnetic amplifier type voltage regulator is effected by
a. electromagnetic induction
b. varying the resistance
c. varying the reactance
d. variable tr
Q. When a conductor carries more current on the surface as compared to core, it is due to
a. permeability variation
b. corona
c. skin effect
d. unsymmetrical fault
Q. The following system is not generally used
a. 1-phase 3 wire
b. 1-phase 4 wire
c. 3-phase 3 wire
d. 3-phase 4 wire
Q. The skin effect of a conductor will reduce as the
a. resistivity of conductor material increases
b. permeability of conductor material increases
c. diameter increases
d. frequency increases
Q. When a live conductor of public electric supply breaks down and touches the earth which ofthe following will happen ?
a. Current will flow to earth
b. Supply voltage will drop
c. Supply voltage will increase
d. No current will flow in the conductor