What is the unit of inertia constant of rotating machines?
Which has more inertia constant between turboalternator and
hydroaltermanor and why?
Answer Posted / iamdon
Inertia constant has unit of second(joule/VA).
Turboalternator has higher inertia constant in the range of
3-9 sec where as hydro alternator has inertia constant of 2
sec.
This variation is because in the case of turbo alternators
more then one(3 to 4) stages are connected to obtain high
mechanical input to alternator.Each stage has high rotating
mass.So more inertia constant.
Author:arbelectbit@yahoo.com
| Is This Answer Correct ? | 6 Yes | 7 No |
Post New Answer View All Answers
importance of reactive power management
(1)Can earth and be conected together (2) what is the diferent between earth & neutral
What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection
If Dg set load increase 25%, How much increase fuel Consumption (15 kva 2 cylinder DG set)
How to set the relay,,??
Explain Creepage Distance of Insulator
what is the difference between oil surge relay and buchholz relay.
How shall i select the value of capacitor or inductor in a system?
what about GD square and its important for motor design?
what is feed back and what are feed back amplifiers?
How stabilizer works??
what is Anti-pumping?
What are test values for an 63 KVA and 100 Kva Distribution Transformers for the following typical tests 1)Magnetic balance 2)Short circuit test 3)Open Circuit test 4)Vector group confirmation test .please give me the standard values for all the above tests.
CAN ANYBODY PLEASE TELL ME HOW TO DESIGN A SERIES REACTOR FOR LIMITING SHORT CIRCUIT FAULT CURRENT??
HI SIR, AM PREPARING FOR RRB FOR SECTION ENGINEER POST. PLZ SEND ME THE PREVIOUS QUESTION PAPERS AND HELP ME. I HAVE NO ENOUGH TIME MY EXAM DATE IS 22ND JUNE.... MY EMAIL ID IS nalla.amarnath@gmail.com