Testing and Commissioning of Electrical Equipments (2180901) MCQs

MCQs of Transmission line

Showing 51 to 60 out of 78 Questions
3 4 5 6 7 8
51.
How we can compensate for the higher value of Tower footing resistance (Rt) in transmission line?
(a) increase insulation disc
(b) increase tower hight
(c) Increase Earth wite count
(d) All of these
Answer:

Option (a)

52.
Which of the following is/are essential substation equipment?
(a) circuit breaker
(b) isolator
(c) earthing switch
(d) All of these
Answer:

Option (d)

53.
Which equipment is used for EHV lines to improve power transferability?
(a) Shunt capacitor
(b) Shunt reactor
(c) Series capacitor
(d) All of these
Answer:

Option (c)

54.
Which among these is a configuration of an isolator? i. Vertical break type ii. Horizontal type iii. Horizontal break with two post insulator iv. Horizontal break centre post rotating double break v. Pantograph type
(a) Only ii and iii
(b) i, ii, iii, and iv
(c) i, ii, iii, iv, v
(d) i, ii, iv, v
Answer:

Option (c)

55.
Which among these is a type of surge arrestor?
(a) Conventional gapped arrestors
(b) Metal oxide arrestors
(c) Conventional gapped arrestors and Metal oxide arrestors
(d) None of these
Answer:

Option (c)

56.
Which among these types of bus bars can be used outdoor?
(a) Tubular
(b) ACSR
(c) AAC
(d) All of these
Answer:

Option (d)

57.
Which material is used for indoor bus bar?
(a) Copper
(b) Aluminium
(c) Silver
(d) both Copper and Aluminium
Answer:

Option (a)

58.
At what pressure is the SF6 gas filled in the whole installation of GIS substations?
(a) 3 kg / cm2
(b) 5 kg / cm2
(c) 3 kg / m2
(d) 5 kg / m2
Answer:

Option (a)

59.
Single bus-bar arrangement in substations is used for voltage is less than............
(a) 11 kV
(b) 33 kV
(c) 132 kV
(d) 220
Answer:

Option (b)

60.
For voltage is greater than 33 KV, ..............Busbar arrangement is employed
(a) Single
(b) Double
(c) Duplicate
(d) None of the above
Answer:

Option (c)

Showing 51 to 60 out of 78 Questions
3 4 5 6 7 8