EMPS QUIZ 2

The distribution in residential areas are 

• • Single phase, two-wire

• Three phase, three-wire

• Three phase, four-wire

• Two phase, four-wire 

The conductor of an EHV line is selected on the basis of 

• Current carrying capacity

• Corona and RI performance

• Line voltage

• None of these

Series capacitive compensation in EHV transmission lines is used to 

• Reduce the line loading 

• Improve the stability of the system

• Reduce the voltage profile

• Improve the protection of the line

In a dc transmission line

• It is necessary for the sending end and receiving end to be operated in synchronism.

• The effects of inductive and capacitive reactance?s are greater than in an ac transmission line of the same rating.

• There are no effects due to inductive and capacitive and capacitive reactance

• Power transfer capability is limited by stability considerations.

Bulk power transmission over long High Voltage DC lines is preferred because of

• Low cost of HVDC terminal.

• No harmonic losses.

• Minimum line power losses

• Simple protection. Simple protection. 

11.High Voltage DC monopolar link uses

• One conductor usually of negative polarity

• One conductor usually of positive polarity

• Two conductor one of positive and the other of negative polarity

• Two conductors both of negative polarity

Back to back High Voltage DC is used to

• Increase the transmission capability

• Decrease line losses

• • Provide stable interconnection

  • D

• • Reduce voltage drop

  Answer / Hint

High Voltage DC monopolar link uses

• One conductor usually of negative polarity

• One conductor usually of positive polarity

• Two conductor one of positive and the other of negative polarity

• Two conductors both of negative polarity

A feeder in a transmission system feeds power to

• Distributors

• Generating stations

• Service mains

• All of the above

Which of the following D.C. distribution system is the simplest and the lowest in first cost?

• Radial system

• Ring system

• Interconnected system

• None of the above