Which one of the following comes under switching devices ?
A. Commutators
B. Isolators
C. Current transformers
D. Regulators
Switchgear and Protection
What are the essential features of switch gear ?
A. Provision for manual control
B. Complete reliability
C. Provision for instruments
D. All of the above
What is the standard form of TVSS ?
A. Transient Voltage Simple Suppressor
B. Transformer Voltage Simple Suppressor
C. Transient Voltage Surge Suppressor
D. Transient Voltage Single Suppressor
Which one of the following arresters can be done outside of the panel board ?
A. Lightning arrester
B. Fuses
C. Surge arrester
D. Regulators
What is the standard form of BOCB ?
A. Bulk Oil Common Breaker
B. Bulk Oil Controller Breaker
C. Bulk Oil Circuit Breaker
D. Beaker Oil Circuit Bulk
______ are the applications of low voltage switch gear ?
A. Capacitors
B. Motor unit protection
C. Both a and b
D. None of the above
Which one of the following requires replacement after every operation ?
A. Oil switches
B. Lightning arresters
C. Fuse
D. Circuit breaker
Which one of the following performs both detection and interruption functions ?
A. Fuse
B. Oil switches
C. Circuit breaker
D. Air circuit breaker
The low voltage range of switch gear is up to _____.
A. 400 KV
B. 765 KV
C. 11 KV
D. 66 KV
What are the advantages of oil circuit breaker ?
A. Easily available
B. Uses less quantity of oil
C. Slower operation
D. Highly inflammable