explain why reduced voltage starters are required for large tree phase inudction motor

2 Answers  

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in transformer which grade oil will use?

3 Answers  

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what is power factor ? why is it so important?

2 Answers   Telco,

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In an ideal transformer no load primary current I0 A lags behind V1 by 90 degree B is in the phase with V1 C leads V1 by 90 degree D lags V1 by 45 degree

1 Answers  

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How to calculate mf when meter equipment and meter are connected

0 Answers  

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What is the Different b\w Circuit Breaker & Isolater

11 Answers  

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How many types of timer ?which timer are used star delta feeder

1 Answers   BMM Ispat,

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it is difficult to interrupt a capacitive current because (a)it has a leading power factor (b)current magnitude is very small (c)the restriking voltage can be high (d)stored energy in the capacitor is high

2 Answers   DGVCL Dakshin Gujarat Vij Company, MGVCL, UGVCL Uttar Gujarat Vij Company Ltd,

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How can you measure the signal from the PT100 sensor?

1 Answers  

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What is the suitable rating of MCB for 1.5 Ton A.C and why? 1Ton= how many amperes?

5 Answers   BARC,

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3phase motor 400v (induction) A.C 4kw company design 1400rpm but our requirement 2000rpm possible? attached any instrument. reply fast! contact 03343262442

3 Answers  

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why the secondary winding of the transformer is not open circuited ?

5 Answers   Nepal Electricity Authority, Torrent Pharma,

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