Answer / istiak

in measuring polarities of a transformer we use a very small
battery or dc supply voltage source.in that case,if we use
alternating current replace of D.C then we couldn't find
polarities because ac changes it's side within a few moment
and dc doesn't..................

Answer / k.prakashchandra

To create momentary magnetic field

why we use primary delta connectin in hight voltage transformer

2 Answers  

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To have variable speeds we use a. Induction motor b. Traction motor c. Shunt motor

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What is d diff. btw MCB & MCCB???

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what types of cable used in underground coal mining?

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What is disadvanage if power factor goes to in leading..?

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Why a motor blower cobination draw more current at winter than summer?

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Can you used moeller lzm1 mccb in a dc system with 125vdc and 20ka short circuit current , beside is it have 24 or 48 volt shunt ? Beside how long current can through from An MCB shunt contacts? (like Z7-AS 24 V)?

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i Have 1000kva 11/.4 kv voltemp make t/f Its a 2 year old. i wants to known how much iron losses & copper loses during no load condition.

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I would like to install the largest KW alternator to a 200 amp aluminum bus box in my home. Is it possible to install a 250 KW 400v 251amp synchronous alternator to my home?

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technically, what is the reason behind starting the motor star the delta connection .. and what other ways to do this rather than using " star-delta transformer"

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What is Difference Between Induction Motor & Servo Motor

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being an electrical engineer why you wanna come into software i have an very good academics what answer i have to give

0 Answers  

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