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


Please Help Members By Posting Answers For Below Questions

How to select a contactor? How many types of contactors are available

2734


what is the difference between STAR and DELTA connection and application wise how it can be utilizedd

1737


Whether power factor should be high or low? Why?

660


why we take movement of rotor always in counter-clockwise direction in 3-phase induction motors?

1512


How to select the proper VSD to operate high inertial load

1277






What is online and offline ups? how does it works?

1616


In three pin plug 6 amp. 220V ac rating. Why earth pin diameter is higher than other two pin? What its purpose ?

722


our factory is going under construction mean time transformer 1000 kva 2 nos &load break swithch 12 kv & 4 nos 750 kva 2 nos & 380 kva 2 nos generator to be errcted.how to arrange earth pits &how to earth connect & neutral pit how to calculate in earth bit size.

1656


When MICC cables used ?

1605


i want to know how to determine that a surge arrester work properly in 11kv system. and how to test a 12kv surge arrester

1691


how to work droop ct in generating station

2135


Why does inductive loads consume KVARs?

1559


what is the IS foe lightning arrester?

1683


could you measure current in parallel?

689


if we give 60 hz single phase supply to the transformer used in europe , than what will happen

1514