why battery is connected in series?

10 Answers   HP,

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why we use primary delta connectin in hight voltage transformer

2 Answers  

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i want to know about for what reason we are using star delta starter? how it works? what are the advantages?

4 Answers  

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why transmission voltage is 230kv and not 220kv which is a multiple of 11

1 Answers   Mettur Thermal Power Station, Siemens,

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In D O l starter motor starts as a star connected ,then in star delta starter also motor initially starts as star how come star delta is preferred from dol

2 Answers  

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Load break swicth maintenance procedure.

0 Answers   KSEB, L&T, Siemens,

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how to measure the voltage drop in cables also give formulas to calculate.

3 Answers   Cable Wireless,

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what is stper motor

0 Answers   Bhel, WAPDA Water and Power Development Authority,

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what is ground fault in ACB?

0 Answers  

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HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.

0 Answers  

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ANY ONE TELL ME ABOUT generator synchronization panel panel to synchronise 3 gen of 250kva both automatic and manual. 2 gen output vol 415 3ph, 1 gen output vol 400 3ph SEND THE DETAILS DIAGRAM ON THIS EMAIL ADDRESS ayazleo@hotmail.com as soon as possilble best ragrds electrical engineer ayaz mahmood SAUDI TECH

0 Answers  

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in a large three phase induction motors usually the value of full load slip is

1 Answers   PSEB,

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