Ratings of power transformer,Distribution transformer.

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why it is mentioned as 8/10 mva transformer why not directly 8mva or 10mva transformer. please explain me the full detailed reason.

4 Answers   Qatar Gas,

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what is auto transformer?

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Is it advantages of having star-delta vfd than normal star vfd , if yes why?

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what is the function of a circuit breaker ?how does the circuit breaker function during normal operation of an electrical system

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Explain why the Voltage drop will happen in 3 Phase line?

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What is the necessary and sufficient condition for stability.

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Which types of following motors are most efficient?

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what is the path of thunderlightening? once both a buffalo and a person were standing 5m apart but lightening hit and killed buffalo not person?

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A IS TWICE AS GOOD A WORKMAN AS B AND TOGETHER THEY FINISH A PIECE OF WORK IN 14 DAYS.THE NUMBER OF DAYS TAKEN BY A ALONE TO FINISH THE WORK IS 1.11 2.21 3.28 4.42

3 Answers   Ramky,

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IF I USED VVVF DRIVE IN FAN APPLICATION MOTOR IN 6.6 KV ( 700 KW) MOTOR & DURING NORMAL RUN OPERATION TIME IF RPM SUDDENLY REDUCE IN MOTOR BY DRIVE(E. MOTOR RPM REDUCE SUDENLY 687 TO 550 RPM) WAHT WILL BE HAPPEND IN DRIVE

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How to calculate the Harmonics losses in terms of cost/unit.

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