HRC Fuse - MCQs with answers

HRC Fuse - MCQs with answers

Q1. What is the advantage of HRC fuses over Rewirable fuses?

a. High speed operation
b. High rupturing capacity
c. No ageing effect.
d. All of the above.

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Q2. Which material is used in the liquid type of fuse?

a. SF₆
b. Distilled water
c. Carbon tetra chloride.
d. Mineral oil / transformer oil

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Q3. In a HRC fuse what is the time between the cut off and the final current zero called?

a. Pre - arcing time.
b. Arcing time.
c. Total operating time.
d. None of these.

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Q4. Upto what voltage can a cartridge type of fuse can be used?

a. 400 V
b. 11 kV
c. 20 kV
d. 33 kV

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Q5. On what basis is the selection of fuse done?

a. Steady load.
b. Fluctuating load.
c. Both (a) and (b)
d. None of these.

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Q6. What is the main advantage of using a fuse?

a. Cheapest type of protection.
b. Inverse time current characteristics.
c. Current limiting effect under short circuit conditions.
d. All of above.

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Q7. Upto what voltage can the liquid type HRC fuses be used?

a. 33 kV
b. 132 kV
c. 66 kV
d. 220 kV

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