Testing and Commissioning of Electrical Equipments (2180901) MCQs

MCQs of Transmission line

Showing 71 to 78 out of 78 Questions
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71.
Why is the single core cables not provided with armouring?
(a) Avoids excessive loss in the armour
(b) Make the cable more flexible
(c) Make the cable non-hygroscopic
(d) None of these
Answer:

Option (a)

72.
Which among the following cables are generally suited for the voltages upto 11 kV?
(a) Belted cables
(b) Screened cables
(c) Pressure cables
(d) None of these
Answer:

Option (a)

73.
The electrostatic stress in underground cables is
(a) Same at the conductor and the sheath
(b) Minimum at the conductor and maximum at the sheath
(c) Maximum at the conductor and minimum at the sheath
(d) Zero at the conductor as well as on the sheath
Answer:

Option (c)

74.
The bedding on a cable consists of
(a) Hessian cloth
(b) Jute
(c) Any of the above
(d) None of the above
Answer:

Option (c)

75.
_________ cables are used for 132 kV lines.
(a) High tension
(b) Super tension
(c) Extra high tension
(d) Extra super voltage
Answer:

Option (d)

76.
Capacitance grading of cable implies
(a) Use of dielectrics of different permeabilities
(b) Grading according to the capacitance of cables per km length
(c) Cables using single dielectric in different concentrations
(d) Capacitance required to be introduced at different lengths to counter the effect of inductance
Answer:

Option (a)

77.
The minimum dielectric stress in a cable is at
(a) Armour
(b) Bedding
(c) Conductor surface
(d) Lead sheath
Answer:

Option (d)

78.
In a cable immediately above metallic sheath ________ is provided.
(a) Earthing connection
(b) Bedding
(c) Armouring
(d) None of the above
Answer:

Option (b)

Showing 71 to 78 out of 78 Questions
5 6 7 8