Top 80+ Solved Transmission and Distribution MCQ Questions Answer
Q. Due to which of the following reasons the cables should not be operated too hot ?
a. The oil may loose its viscosity and it may start drawing off from higher levels
b. Expansion of the oil may cause the sheath to burst
c. Unequal expansion may create voids in the insulation which will lead to ionization
d. All of the above
Q. Which of the following D.C. distribution system is the simplest and lowest in first cost?
a. Radial system
b. Ring system
c. Inter-connected system
d. None of the above
Q. A booster is a
a. series wound generator
b. shunt wound generator
c. synchronous generator
d. none of the above
Q. Besides a method of trial and error, which of the following methods is employed for solution of network problems in interconnected system ?
a. Circulating current method
b. Thevenin's theorem
c. Superposition of currents
d. All of the above
Q. Which of the following faults is most likely to occur in cables ?
a. Cross or short-circuit fault
b. Open circuit fault
c. Breakdown of cable insulation
d. All of the above
Q. The cause of damage to the lead sheath of a cable is
a. crystallisation of the lead through vibration
b. chemical action on the lead when buried in the earth
c. mechanical damage
d. all of the above
Q. The voltage of the single phase supply to residential consumers is
a. 110 V
b. 210 V
c. 230 V
d. 400 V
Q. Most of the high voltage transmission lines in India are
a. underground
b. overhead
c. either of the above
d. none of the above
Q. The distributors for residential areas are
a. single phase
b. three-phase three wire
c. three-phase four wire
d. none of the above
Q. The conductors of the overhead lines are
a. solid
b. stranded
c. both solid and stranded
d. none of the above
Q. High voltage transmission lines use
a. suspension insulators
b. pin insulators
c. both (a) and (b)
d. none of the above
Q. Distribution lines in India generally use
a. wooden poles
b. R.C.C. poles
c. steel towers
d. none of the above
Q. The material commonly used for insulation in high voltage cables is
a. lead
b. paper
c. rubber
d. none of the above
Q. The loads on distributors systems are generally
a. balanced
b. unbalanced
c. either of the above
d. none of the above