EMPS QUIZ 1

What happens to fuse when fault type current hits fuse

• Allows current to flow

• Breaks the fuse

• Short circuits

• All the above

Transmission line connects 

• A

• Generating station to a switching station/step-down transformer station.

• Step-down transformer station to service transformer banks.

• Distribution transformer to consumer premises.

• Service points to consumer premises.

Answer explanation

A 3-phase 4-wire system is commonly used for

• Primary Distribution

• • Secondary Distribution

  
  

• Primary Transmission

• Secondary Transmission

In a Transmission system the feeder supplies power to 

• Transformer substations (step-up)

• Service mains

• Distributors 

• All of the above 

Distributors are designed from the point of view of

• Its current carrying capacity

• Operating voltage 

• Voltage drop in it

• Operating frequency

Which of the following is usually not the generating voltage?

• 6.6 kV

• 9.9 kV

• 11 kV

• 13.2 kV

Transmission and Distribution of electric power by underground system is superior to overhead system in respect of

• Appearance and public safety

• Maintenance cost

• Frequency of faults, power failure and accidents 

• All of the above 

Which of the following distribution system is preferred for good efficiency and high economy?

• Single-phase, 2-wire system 

• 2-phase, 3-wire syste

• 3-phase, 3-wire system

• 3-phase, 4-wire system

he main reason for using high voltage for long distance power transmission is

• Reduction in transmission losses.

• Reduction in time of transmission

• Increase in system reliability 

• • DNone of the above 

  Answer / Hint

  
  

The highest transmission voltage used in India is

• 400 kV

• • 220 kV

  
  

• 132 kV

• 765 kV