wiz-icon
MyQuestionIcon
MyQuestionIcon
10
You visited us 10 times! Enjoying our articles? Unlock Full Access!
Question

A power station consists of two synchronous generators of rating 500 MVA and 1000MVA with inertia 0.8 pu and 0.5 pu respectively on their own bases MVA rating. The equivalent pu inertia constant on 200 MVA common base is___.
  1. 4.5

Open in App
Solution

The correct option is A 4.5
Inertia constant H1MVA rating

Hnew=H1old×S1oldSnew

=0.8×500200=2pu

Hnew=H2old×S2oldSnew

=0.5×1000200 =2.5pu

Heq=H1new+H2new

=2.0+2.5 =4.5 pu

flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Electric motor
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon