Power System - I (3140914) MCQs

MCQs of Substations

Showing 51 to 60 out of 103 Questions
3 4 5 6 7 8
51.
Busbars are operated at
(a) Constant voltage
(b) Variable voltage
(c) Either (a) or (b)
(d) None of above
Answer:

Option (a)

52.
Cross section of busbar is
(a) Rectangular
(b) Circular
(c) Triangular
(d) Both (a) and (b)
Answer:

Option (d)

53.
Which of the following is used to maintain clearance between ground and live conductor in substations?
(a) Isolators
(b) Insulators
(c) Circuit breakers
(d) All of above
Answer:

Option (b)

54.
The insulators serves the purpose to
(a) Support the conductors
(b) Confine current to the conductor
(c) Provide clearance from ground
(d) All of above
Answer:

Option (d)

55.
What are the types of insulators used in substations?
(a) Pin type
(b) Suspension type
(c) Strain type
(d) All of above
Answer:

Option (d)

56.
Material commonly used for manufacturing of insulators is
(a) Porcelain
(b) Cement
(c) Ceramics
(d) All of above
Answer:

Option (a)

57.
______ are used to disconnect the live system for maintenance and repairs purpose.
(a) Insulators
(b) Isolators
(c) Busbars
Answer:

Option (b)

58.
Isolators are designed to open a live circuit under
(a) On load
(b) No load
(c) Full load
(d) Any load
Answer:

Option (b)

59.
Isolators can be open
(a) After opening of circuit breaker
(b) After closing of circuit breaker
(c) Under closed position of circuit breaker
(d) Any of above
Answer:

Option (a)

60.
Isolators are located
(a) After circuit breaker in line
(b) Before circuit breaker in line
(c) Both after and before circuit breaker in line
(d) Any where in line
Answer:

Option (c)

Showing 51 to 60 out of 103 Questions
3 4 5 6 7 8