Electrical Engineering Questions And Answers :: Switchgear Protections: part2



Electrical Engineering : Switchgear Protections QUESTIONS AND ANSWERS :: part2 : 1 to 5

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

1.H.R.C. fuses provide best protection against

overload
reverse current
open-circuits
short-circuits

2.Resistance grounding is used for voltage between

33kVto66kV
HkVto33kV
3.3kVandllkV
none of the above

3.The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to

lubricate the contacts
insulate the contacts from switch body
extinguish the arc
all of the above

4.The voltage appearing across the contacts after opening of the circuit breaker is called______voltage.

recovery
surge
operating
arc

5.For the protection of power station buildings against direct strokes the requirements are

interception
interception and conduction
interception, conduction and dis-sipation
interception, conduction, dissipation and reflection

More Switchgear Protections QUESTIONS AND ANSWERS available in next pages

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