Top 150+ Solved DC Generators MCQ Questions Answer

From 181 to 189 of 189

Q. The advantage of oil filled cables is

a. more perfect impregnation

b. smaller overall size

c. no ionisation, oxidation and formation of voids

d. all of the above

  • d. all of the above

Q. The disadvantage with paper as insulating material is

a. it is hygroscopic

b. it has high capacitance

c. it is an organic material

d. none of the above

  • a. it is hygroscopic

Q. The breakdown voltage of a cable depends on

a. presence of moisture

b. working temperature

c. time of application of the voltage

d. all of the above

  • d. all of the above

Q. In capacitance grading a homogeneous dielectric is used.

a. Yes

b. No

c. none

d. none

  • b. No

Q. Natural rubber is obtained from milky sap of tropical trees.

a. Yes

b. No

c. none

d. none

  • a. Yes

Q. Rubber is most commonly used insulation in cables.

a. Yes

b. No

c. none

d. none

  • a. Yes

Q. Polyethylene has very poor dielectric and ageing properties.

a. Yes

b. No

c. none

d. none

  • b. No
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