Insulators - MCQs with answers
Insulators - MCQs with answersQ1. Which type of insulator is used on 132 kV transmission lines?
a. Pin type.
b. Disc type.
c. Shackle type.
d. Pin and shackle type.View Answer / Hide AnswerQ2. Where is the strain type insulators used?
a. At dead ends.
b. At any intermediate anchor tower.
c. On straight runs.
d. Either (a) or (b).View Answer / Hide Answer
Q3. Porcelain is produced by firing at high temperature of which all mixtures?
ANSWER: d. Either (a) or (b).
d. All of these.View Answer / Hide AnswerQ4. What is the dielectric strength of porcelain?
a. 55 kV/cm.
b. 60 kV/cm.
c. 75 kV/cm.
d. 80 kV/cm.View Answer / Hide AnswerQ5. Why is the wavy structure of pin insulators used?
a. Increases mechanical strength.
b. Increases puncture strength.
c. Increases flash over voltage.
d. Increases thermal strength.View Answer / Hide Answer
Q6. The number of discs in a string of insulators for 400 kV ac over head transmission line lies in the range of
ANSWER: c. Increases flash over voltage.
a. 32 – 33
b. 22 – 23
c. 15 – 16
d. 9 – 10View Answer / Hide Answer
- RE: Insulators - MCQs with answers -balwant singh kuldeep (07/31/20)
- 400V given which is line voltage. Each Insulator design for 11 KV phase voltage,
so 400/(11*root3)=20.99 so right answer is B option
- RE: Insulators - MCQs with answers -Solaimathi v (07/28/19)
- Can u explain 6th question. Each disc has 11kv .so 400/11
Apx 35 right