what is the VVVFD and?

4 Answers  

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in 4 pole lap wound dc motor one brush is disconnected then what result in new voltage if its voltage is v volts power is p watts current is i amp

1 Answers   GATE,

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Why armature rheostat is kept in maximum position?

0 Answers  

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3 shows a 415 V, 3-phase generator supplying a 3-phase 415/110 V transformer. Draw the individual and combined impedance diagrams to a base of 10 kVA. Determine the system fault kVA and the fault currents at the 415 V and 110 V busbars for short circuit faults on the transformer input or output terminals. Work in p.u. values of impedances.

0 Answers  

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12.5 KVAR capacitor 440V gas filled, Its used for windmill purpose, How can i know about microfarad value for this capacitor

2 Answers  

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sir please tel me how calucalte kwh if home taken load 30ams how maney kwh taken per day.and 3phase motor 5hp per hars how maney load teken and how mach kwh and forward me to electrical table for calicalte kwh and kvr and kvah

1 Answers  

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In which of the following case, the rotating magnetic field is reversed? A regenerative breaking B plugging C dynamic breaking D forward motoring

0 Answers  

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Is MV canble armour can be earthed at both ends?

2 Answers  

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What effect does a very low impedance have on the Voltage regulation? On the short-circuit current?

0 Answers  

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Is corona effect occurs in Induction motor. pl. justify the answer.

4 Answers   KPS,

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what are the advantages of Horizontal isolation breakers v/s vertical isolation breakers in medium voltage switchgear class.

1 Answers   NNN,

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why in some trains in India Electric equipment such as Fans , tube light not work until locomotive or engine is attached to the train ??

1 Answers  

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