The power factor of transformer is dependent on load we only
define Volt-ampere rating and does not include power factor but in case of motors,
power factor depend on construction and hence rating of motors is in
KW and include power factor.
Monday, January 19, 2015
Home »
eee interview questions
,
eee lab viva questions
» Why transformers are rated in KVA and motors are rated in KW ?
Why transformers are rated in KVA and motors are rated in KW ?
Categories: eee interview questions, eee lab viva questions
Related Posts:
why a starter is used in the tube light circuit ? A glow starter or commonly known as starter is used in the tube light circuit to provide an initial current to filaments of the tube light. To understand the purpose exactly why a starter is used in the tube light circ… Read More
what is the difference between core and shell type transformer ? S.No Core type transformer Shell type transformer 1 Core is surrounded by winding Winding is surrounded bycore 2 It has two limbs It has three limbs 3 It is made up of … Read More
Why is a shunt motor called constant speed motor ? Why is a shunt motor called constant speed motor ? In dc shunt motor flux produced by field winding is proportional to field current Ish. Here the input voltage is constant so field current and flux is also constant.Therefor… Read More
What is the difference between self and mutual induction ? … Read More
What is the difference between static and dynamically induced EMF ? Statically induced EMF: It is an emf induced without a relative motion between a conductor and magnetic field Example: EMF induced in transformer Dynamically induced EMF: It is an emf induced with a relative motio… Read More
0 comments:
Post a Comment