switchgear quiz # 2

The outdoor type switchgear is generally used for voltages beyond ........... kV.

• 50

• 56

• 60

• 66

What is the maximum current up to which fuses can be used

• 25 A

• 50

• 75

• Greater than 100 A

Which among these are the main characteristics of a fuse element?

• Low melting point

• high conductivity

• least detonation due to oxidation

• all of the above

advantages of isolator is .......

• safe from risk

• helps to eliminate variations in output power

• Moreover, it avoids frequency pulling due to changing loads.

• all of these

The maximum voltage for the switches is up to

• up to 10kv

• upto 15kv

• up to25kv

• up to35kv

On which of the following routine tests are conducted?

• Oil circuit breakers

• Air blast circuit breakers

• Minimum oil circuit breakers

• All of the above

The objective of a protection scheme is to keep the power system is

• stable

• safe

• reliable

• all of the above

which are essential future of switchgear

• Complete reliability

• Quick operation

• Absolute certain Discrimination

• all of these

input of relay is

• temperature

• power breakdown

• warning alarm

• communication

why sensationalized bus bar scheme is more reliable as compare to a single bus bar scheme due to to..

• long time saving

• due to extra breaker

• due to section

• all of these