Transmission And Distribution Part 3
Category –EE Online Test
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Attempt Free Transmission And Distribution Part 3 Here. Read The Important Electrical MCQ From Below.
Q1. Which of the following equipment is used to limit short-circuit current level in a substation ?
A. Isolator
B. Lightning switch
C. Coupling capacitor
D. Series reactor
Ans. D
Q2. For exact compensation of voltage drop in the feeder the booster
A. must be earthed
B. must work on line voltage
C. must work on linear portion of its V-I characteristics
D. must work on non-linear portion of its V-I characteFistics
Ans. C
Transmission And Distribution Part 3
Q3. System grounding is done so that
A. inductive interference between power and communication circuits can be controlled
B. the floating potential on the lower voltage winding for a transformer is brought down to an insignificant value
C. the arcing faults to earth would not set up dangerously high voltage on healthy phases
D. for all above reasons
Ans. D
Q4. The effective resistance of a conductor will be the same as ‘ohmic resistance’ when
A. power factor is unity
B. current is uniformly distributed in the conductor cross-section
C. voltage is low
D. current is in true sine wave form
Ans. C
Transmission And Distribution Part 3
Q5. The surge resistance of cables is
A. 20 ohms
B. 50 ohms
C. 200 ohms
D. 300 ohms
Ans. B
Q6. In the cables sheaths are used to
A. prevent the moisture from entering the cable
B. provide strength to the cable
C. provide proper insulation
D. none of the above
Ans. A
Transmission And Distribution Part 3
Q7. Which of the following are the constants of the transmission lines ?
A. Resistance
B. Inductance
C. Capacitance
D. All of the above
Ans. D
Q8. Which of the following methods is used for laying of underground cables ?
A. Direct laying
B. Draw-in-system
C. Solid system
D. All of the above
Ans. D
Q9. Most of the high voltage transmission lines in India are
A. undergound
B. overhead
C. either of the above
D. none of the above
Ans. A
Transmission And Distribution Part 3
Q10. Overhead lines generally use
A. copper conductors
B. all aluminium conductors
C. A.C.S.R. conductors
D. none of these
Ans. C
