Answer / uditparashar

no it can not be used for power factor correction as rheostat is a purely resistive thing and if u want to control pf u need to use either capacitive or inductive material in the circuit

What is the safety of UPS?

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what happens if DC earthing and AC earthings are shorted?

1 Answers  

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if harmonics is generates on the secondary side of transformer then why we put LC ckt on prim side?(i m talking abt rectiformer transformer)

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i am using auto transformer for starting of induction motor to provide reduse voltages...but the principle of a tansformer according to definition"which transform energy to on circuit to another circuit with constant power and constant frequency". so if i am using reduse voltage then current obsely hige because power is same.but we use auto transfarmer for starting of induction motor to give low current.but here according to definition we are giving hige current.

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what is d meaning of inrush current of a trafo ? how u can calculate this ?

1 Answers   Jindal,

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What is the different between conventional MCC and intelligent MCC? Common controller or controller for each bucket

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any one please tell taht what type questions will be asked in BHEL interview, i am having interview on 24th Dec, please send this to mail pradeepsistam@yahoo.co.in

0 Answers   Bhel,

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why neutral wire don't shock?

9 Answers  

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What is the formula for calculating impedance of transformers connected parallel at fault level 50KA?

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sir, in a industry present pf is 0.54 pf 25hp power is there its want improve 0.9 pf. which suitable capacity capacitor is suitable please inform me.

2 Answers  

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What is pd controller?

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how to select the rating of neutral ct with reference to transformer secondary current(in power transformer,stepdown tansformer,for example2000kva,11kv/415volt

2 Answers   ASD Lab,

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