• HOME
  • QUIZ
  • CONTACT US
EXAMIANS
  • COMPUTER
  • CURRENT AFFAIRS
  • ENGINEERING
    • Chemical Engineering
    • Civil Engineering
    • Computer Engineering
    • Electrical Engineering
    • Mechanical Engineering
  • ENGLISH GRAMMAR
  • GK
  • GUJARATI MCQ

Power Systems

Power Systems
Condition for zero voltage regulation is

 tanφ = R/X
 cosφ = R/X
 cosφ = X/R
 tanφ = X/R

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%.

 83.76 kV
 52.84 kV
 48.36 kV
 20 kV

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
Advantages of per unit system is/are

All of these
 It has units for all quantities
 No units for any quantity
 Need of transformation ratio

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
Which of the following buses is/are not PV buses?

 fixed shunt capacitor buses
 reactive power support buses
 voltage control buses
 both 1 and 2

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
Where is the draft tube of a hydroelectric plant that is an airtight pipe located

 At the beginning of the penstock.
 Near the surge tank.
 In between the runner exhaust and the tail race.
  In between the penstock and runner.

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the transmitted voltage?

 36. 36 kV
 100 kV
 18.18 kV
 30.6 Kv

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Power Systems

DOWNLOAD APP

  • APPLE
    from app store
  • ANDROID
    from play store

SEARCH

LOGIN HERE


  • GOOGLE

FIND US

  • 1.70K
    FOLLOW US
  • EXAMIANSSTUDY FOR YOUR DREAMS.
  • SUPPORT :SUPPORT EMAIL ACCOUNT : examians@yahoo.com

OTHER WEBSITES

  • GUJARATI MCQ
  • ACCOUNTIANS

QUICK LINKS

  • HOME
  • QUIZ
  • PRIVACY POLICY
  • DISCLAIMER
  • TERMS & CONDITIONS
  • CONTACT US
↑