Substation

In a substation current transformers are used to:___________

• Measuring purpose

• Protection purpose connecting to relays

• Both (1) and (2)

• None of the above

What is the maximum transmission voltage substation in India:

• 400 kV

• 500 kV

• 750 kV

• 1000 kV

Which of the gas is used in gas insulated substation:

• Nitrogen + SF6

• Hydrogen + SF6

• SF6

• None of the above

A bus coupler circuit breaker is utilized in a substation for:

• Joining the transmission line with station bus-bar

• Joining the neutral of the generator with earth

• Joining the generator with transfer

• Joining main and transfer bus in a substation

Gas Insulated Substation is employed where:_________

• Where there is less space available

• For high altitude substations

• In terrain region

• All the above

Which is the first equipment seen in the substation while coming from transmission system:

• Circuit breaker

• Lightning arrester

• Current transformer

• Transformer

In substation which of the device is a carrier communication device:

• CVT

• Earth conductor

• Wave trap

• Lightning arrestor

Single bus-bar arrangement in substations is used for voltage is less than............

• 11 KV

• 33 KV

• 132 KV

• 220 KV

Which of the device employed in substation to limit the short circuit current in Power systems

• Shunt condenser

• Reactor

• Shunt capacitor

• Series Capacitor

Primary substation is generally

• Indoor type

• Outdoor type

• Pole mounted type

• Any of above