Transmission And Distribution Part 10
Category –EE Online Test
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Attempt Free Transmission And Distribution Part 10 Here. Read The Important Electrical MCQ From Below.
Q1. There is a greater possibility of occurrence of corona during
A. dry weather
B. winter
C. summer heat
D. humid weather
Ans. D
Q2. In A.C.S.R. conductors, the insulation between aluminum and steel conductors is
A. insulin
B. bitumen
C. varnish
D. no insulation is required
Ans. D
Q3. Corona usually occurs when the electrostatic stress in air around the conductor exceeds
A. 6.6 kV (r.m.s. value)/cm
B. 11 kV (r.m.s. value)/cm
C. 22 kV (maximum value)/cm
D. 30 kV (maximum value)/cm
Ans. D
Q4. 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
Ans. B
Transmission And Distribution Part 10
Q5. 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
Ans. B
Q6. 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
Ans. A
Q7. Which of the following distribution systems is the most economical ?
A. A.C. 1-phase system
B. A.C. 3-phase 3 wire system
C. A.C. 3-phase 4 wire system
D. Direct current system
Ans. D
Q8. Power loss due to corona is not directly proportional to
A. spacing between conductors
B. supply voltage frequency
C. phase-neutral voltage
D. all of the above
Ans. A
Transmission And Distribution Part 10
Q9. In the design of a distributor which of the following is the major consideration ?
A. Voltage drop
B. Current carrying capacity
C. Frequency
D. kVA of system
Ans. A
Q10. Which of the following cause transient disturbances ?
A. Faults
B. Load variations
C. Switching operations
D. Any of the above
Ans. D
