Which of the following is the least expensive protection for overcurre – McqOptions

MCQOPTIONS

1.	Which of the following is the least expensive protection for overcurrent is low voltage system ?
A.	Rewireable fuse
B.	Isolator
C.	Oil circuit breaker
D.	Air break circuit breaker
Answer» B. Isolator

Discussion

No Comment Found

Related MCQs

Which of the following medium is employed for extinction of arc in air circuit breaker ?
The air blast circuit breakers for 400 kV systems are designed to operate in how much time?
When using air blast circuit breaker, current chopping is a phenomenon observed when
Which among these is the least expensive protection for over current in low voltage system?
Recovery voltage is the value of rms voltage that reappears across the poles of a circuit breaker before_______________
In a circuit breaker, the active recovery voltage depends upon which among these?
The interrupting time of a circuit breaker is the period between the instant of _________.
Discrimination between main and back up protection is provided by the use of relays which are
Which of the following devices will receive voltage surge first travelling on the transmission line ?
A three phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3s. What is its symmetrical breaking current?