Time Left - 06:00 mins

SSC JE 2017: Switch-Gear & Protection Rankers Quiz 3

Attempt now to get your rank among 2104 students!

Question 1

An isolator is used in series with Air blast Circuit Breaker employed at UHV lines because:

Question 2

The type of protection that does not respond to faults occurring beyond its zone even though the fault current may pass thro’ the zone is:

Question 3

Arc blow is a welding defect which is encountered in _________.

Question 4

Inside the earth pit, the earthing electrode should be placed

Question 5

A circuit breaker is rated as 1500 A, 1000 MVA, 33 kV, 3-second, 3-phase oil circuit breaker, rated making current is

Question 6

In low oil circuit breaker, the oil performs the function of

Question 7

Capacitive current breaking results in

Question 8

In 132 kV system, the phase to ground capacitance is

and inductance is 6H, the value of resistance R to be used across contacts of CB to eliminate voltage surges is

Question 9

The earth fault current is generally ……….. than the short-circuit current.

Question 10

Current chopping mainly occurs in

Tags :

Sep 2ESE & GATE EE