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Electrical Engineering Mcqs — Test 65

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Question 1
SF6 gas______________?
Question 2
A thermal protection switch can protect against_____________?
Question 3
Overload relays are of_______________type
Question 4
Thermal overload relays are used to protect the motor against over current due to____________?
Question 5
In order that current should flow without causing excessive heating or voltage drop, the relay contacts should_________________?
Question 6
Circuit breakers are essentially______________?
Question 7
Circuit breakers are essentially____________?
Question 8
D.C. shunt relays are made of_____________?
Question 9
Circuit breakers usually operate under______________?
Question 10
Air blast circuit breaker is used for_____________?