Answer / kundan

Induction motor is a highly inductive load so it draws lagging current from supply hence induction motors have low PF

1. what is exciting winding, rotor winding, startor winding. and how it works? in ac generator

3 Answers  

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Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

1 Answers   Pride Hotels,

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what are the advantages and disadvantages of speed control of 3 phase induction motor by varying frequency explain with drawing

1 Answers   ABB, Genpect,

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how solar power plant energy meter multiplication factor

1 Answers  

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surge tank, hrc fuse, earthing transformer, firm power objective type

1 Answers  

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WHY CURRENT DECREASES WHEN VOLTAGE IS INCREASED IN A CURRENT TRANSFORMER ?

5 Answers   Sterling Wilson,

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i need circuit star delta connection?

1 Answers   L&T,

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what is phase voltage and line voltage? in line voltage how 415v is obtained?

9 Answers  

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If any HVDC line is going with positive & negative(the negative usually have return path of current with earthing electrode). Now the question is if this HVDC earthed electrode which is using as return path and earthed any nearby 400kv or 220kv AC substation equipments. which will be the impact of this on AC substation & its equipment, how severe may be this and what should be the minimum distance require between HVDC earthed electrode and AC substation equipments? It's really an high engineering level question...Dare to answer and increase your knowledge.

1 Answers   MEIL,

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What is current chopping in CB?

1 Answers  

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what is the purpose of silicon dropper used in battery charger?

1 Answers   KNPC,

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what is power factor

4 Answers   UltraTech,

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