Which one of the following requires tripping circuit ?
A. Insulator
B. Regulator
C. Circuit breaker
D. Isolator
Switchgear and Protection
What is the standard form of HRC ?
A. High Regulator Capacity
B. High Rupturing Capacity
C. High Rupturing Controller
D. High Rupturing Commutator
Which one of the following has better capabilities ?
A. Circuit breaker
B. Relays
C. Isolator
D. Fuses
Which one of the following is an on-load device ?
A. Regulator
B. Transformer
C. Isolator
D. Circuit breaker
Which one of the following comes under unsymmetric fault ?
A. LL-G
B. L-G
C. L-L-L-G
D. None of the above
What is the standard form of RCCB ?
A. Residual Current Common Breaker
B. Residual Current Commutator Breaker
C. Residual Current Circuit Breaker
D. Residual Current Control Breaker
What are the causes of an electrical faults ?
A. Smoke of fires
B. Loss of equipment
C. Over current flow
D. None of the above
Which one of the following comes under control and sensing devices ?
A. Regulators
B. Commutators
C. Switches
D. Voltage transformers
What is the standard form of MCB ?
A. Miniature Circuit Breaker
B. Main Circuit Board
C. Main Circuit Breaker
D. Moulded Control Breaker
Which one of the following comes under high voltage switchgears ?
A. Current transformer
B. Oil switches
C. Relays
D. Fuses