• 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
For complete protection of 3-phase system from the short circuit faults minimum number of relays required are

 three
 two
 six
 one

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
At slack bus, which one of the following combinations of variables is not specified?

 P and Q
 V and δ
 P and V
 Q and V

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
In case of failure of prime mover of the generator, which type of relay is used?

 impedance relay
 reverse power relay
 offset mho relay
 distance relays

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
A fault occurring at the terminals of an unloaded synchronous generator operating at its rated voltage has resulted in the following values of currents and voltages. IR0 = j 2.37 pu IR1 = -j 3.05 pu IR2 = j 0.68 pu VR0 = VR1 = VR2 = 0.237 pu. Which of the following faults has occurred?

 LLL
 LLG
 LG
 LL

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
Skin effective is more in case of

 communication lines
None of these
 power lines
 same in both cases

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
A transmission line has an impedance of (2+j6) Ω has voltage regulation of 10% at a load power factor of 0.8 lag. Find the voltage regulation for a load of 0.6 lead

 6.92%
 -6.92%
 -10%
 10%

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
↑