Top 80+ Solved Transmission and Distribution MCQ Questions Answer
Q. For transmission of power over a distance of 200 km, the transmission voltage shouldbe
a. 132 kV
b. 66 kV
c. 33 kV
d. 11 kV
Q. For aluminium, as compared to copper, all the following factors have higher valuesexcept
a. specific volume
b. electrical conductivity
c. co-efficient of linear expansion
d. resistance per unit length for same cross-section
Q. Which of the following equipment, for regulating the voltage in distribution feeder,will be most economical ?
a. Static condenser
b. Synchronous condenser
c. Tap changing transformer
d. Booster transformer
Q. In a tap changing transformer, the tappings are provided on
a. primary winding
b. secondary winding
c. high voltage winding
d. any of the above
Q. Constant voltage transmission entails the following disadvantage
a. large conductor area is required for same power transmission
b. short-circuit current of the system is increased
c. either of the above
d. none of the above
Q. On which of the following factors skin effect depends ?
a. Frequency of the current
b. Size of the conductor
c. Resistivity of the conductor material
d. All of the above
Q. The effect of corona can be detected by
a. presence of zone detected by odour
b. hissing sound
c. faint luminous glow of bluish colour
d. all of the above
Q. For transmission of power over a distance of 500 km, the transmission voltage shouldbe in the range
a. 150 to 220 kV
b. 100 to 120 kV
c. 60 to 100 kV
d. 20 to 50 kV
Q. In the analysis of which of the following lines shunt capacitance is neglected ?
a. Short transmission lines
b. Medium transmission lines
c. Long transmission lines
d. Medium as well as long transmission lines
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 because 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