Transmission And Distribution Part 5
Category –EE Online Test
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Attempt Free Transmission And Distribution Part 5 Here. Read The Important Electrical MCQ From Below.
Q1. The purpose of using a booster is to
A. increase current
B. reduce current
C. reduce voltage drop
D. compensate for voltage drop
Ans. D
Q2. Which of the following can be used for bus-bars ?
A. Tubes
B. Rods
C. Bars
D. Any of the above
Ans. D
Transmission And Distribution Part 5
Q3. Conductors for high voltage transmission lines are suspended from towers to
A. increase clearance from ground
B. reduce clearance from ground
C. take care of extension in length during summer
D. reduce wind and snow loads
Ans. A
Q4. The electrostatic stress in underground cables is
A. zero at the conductor as well as on the sheath
B. same at the conductor and sheath
C. minimum at the conductor and minimum at the sheath
D. maximum at the conductor and minimum at the sheath
Ans. D
Transmission And Distribution Part 5
Q5. The charging current in the cables
A. leads the voltage by 180°
B. leads the voltage by 90°
C. lags the voltage by 90°
D. lags the voltage by 180°
Ans. B
Q6. The underground system cannot be operated above
A. 440 V
B. 11 kV
C. 33 kV
D. 66 kV
Ans. D
Q7. Which of the following is the source of heat generation in the cables ?
A. Dielectric losses in cable insulation
B. IR losses in the conductor
C. Losses in the metallic sheathings and armourings
D. All of the above
Ans. D
Transmission And Distribution Part 5
Q8. The distributors for residential areas are
A. single phase
B. three-phase three wire
C. three-phase four wire
D. none of the above
Ans. C
Q9. In transmission lines the cross-arms are made of
A. copper
B. wood
C. R.C.C.
D. steel
Ans. D
Q10. Transmitted power remaining the same, if supply voltage of a D.C. 2-wire feeder is increased 100 percent, saving in copper is
A. 25 percent
B. 50 percent
C. 75 percent
D. 100 percent
Ans. B
