Testing and Commissioning of Electrical Equipments (2180901) MCQs

MCQs of Transmission line

Showing 61 to 70 out of 78 Questions
4 5 6 7 8
61.
For cost and safety the outdoor substations are installed for voltages above
(a) 11 kV
(b) 33 kV
(c) 66 kV
(d) 132 kV
Answer:

Option (b)

62.
Which of the following busbar arrangement is generally employed in distribution system?
(a) One-and-half breaker arrangement
(b) Main and transfer arrangement
(c) Ring main distribution system
(d) Single busbar arrangement system
Answer:

Option (c)

63.
Gas Insulated Substation is employed where
(a) high altitude substations
(b) there is less space available
(c) terrain region
(d) All the above
Answer:

Option (b)

64.
A bus coupler circuit breaker is utilized in a substation for
(a) Joining the transmission line with station bus-bar
(b) Joining main and transfer bus in a substation
(c) Joining the generator with transfer
(d) Joining the neutral of the generator with earth
Answer:

Option (b)

65.
Which of the gas is used in gas insulated substation
(a) SF6
(b) Hydrogen + SF6
(c) Nitrogen + SF6
(d) All of these
Answer:

Option (a)

66.
A busbar is rated by
(a) Current only
(b) Voltage only
(c) Current, voltage and frequency
(d) Current, voltage, frequency and short circuit current
Answer:

Option (d)

67.
In a substation, current transformers are used to
(a) Measuring purpose
(b) Protection purpose
(c) Both Measuring and Protection purpose
(d) None of these
Answer:

Option (c)

68.
The size of Gas Insulated Substation is significantly small compared to conventional substation because
(a) High electronegative property of SF6 gas
(b) High dielectric property of SF6 gas
(c) High Insulation property of SF6 gas
(d) All the above
Answer:

Option (d)

69.
Which is the first equipment seen in the substation while coming from the transmission system
(a) Circuit breaker
(b) Lightning arrester
(c) Current transformer
(d) Transformer
Answer:

Option (b)

70.
How many cores are used in a cable for the transmission of voltages up to 66 kV?
(a) Single core
(b) Two core
(c) Three core
(d) All of these
Answer:

Option (c)

Showing 61 to 70 out of 78 Questions
4 5 6 7 8