| Other Electrical Engineering Interview Questions |
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|What is mechanical interlock?Explain the uses?
|Why different types of connection in transformers are used?
(star/star,star/delta,delta/star,delta/delta)Why we are
only taking in consideration of star/delta type
transformers? if only star/delta is good in practice where
doses other type of transformers are used? Note: i want to
know place of using different types of transformers other
than Star/delta type with brief description.
|WHAT IS MEANT BY BTU OF AIR CONDITIONERS.
|What is mean by power factor?
|what is surge suppressor?
|Why the suply frequency in INDIA is 50HZ
|differentiate between one way two gang switch & two way one
gang switch, used in designing the loads of building.
|If I want to use capacitor banks at HT (11 KV) side for
maintaining power factor then which type of capacitor
should I use? Plz give me the specification?? (I am using
1250 Kva transformer (11 KV/433V)).
|WHAT IS DGA TEST FOR THE TRANSFORMERS.
|Why two nos. un-tensioned wires are placed inside the PSC
poles used by powergrid in RGGVY works.
|what are the oils used in transformers cooling? n which type
transformer is used in power systems?
|How much allowable difference current between on three
We have a 1870 KW HT motor, 11 Kv supply,FLA-120A,2870
rpm,2-pole squirrel cage induction Motor.And stator is
connected in star connection with Liquid resistance stater
to limit the starting current.It has coupled with
Centrifugal air compressor.My question is it is loading 73%
of FLA taking R-phase 86.7 A, Y-phase-85.4A,B-phase-
78.3A.why the B phase current is that much of difference.Is
it allowable, or any one tell me how much allowable
current.If any method to calculate.
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