what is the advantages of having in-built acvvvf (without seperate inverter in the control panel)in the drive system of elevators?

0 Answers  

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How i can select current transformer and meters for the upgrading the panal..for 200kw to 600kw....i need to select monitoring and protection ct,s and apmpire meter ,kw meter too.

1 Answers  

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transformer core are laminated for what purpose?

9 Answers   NTPC,

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If current and resistance in a circuit is increased by 20%, what will happen to its voltage drop??

4 Answers  

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What will happen if 230V DC motor connected to 230V AC Supply?

15 Answers   Ashok Leyland, BOC, JSW, ONGC, RRB, TRB,

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How to Design green buildings services? What is the advantage to design green building?

0 Answers  

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how to Select its CORE in electrical cables based on its applications? or Application of various types of electrical cable based on it CORE?

0 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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what is the meaning of TRF

1 Answers   Khidmah,

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What is the difference between the transmission line and distribution line?

0 Answers  

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We know that, in case if there is a faulty insulation,or sc, the current is bypassed to earth through the earth wire that has low resistance.Actually, what will happen to that current that flows through gnd?In that case,if we come in contact with that faulty appliance, wont that current flow through us as we form a closed path by standing in gnd?Is grounding a safety measure?

3 Answers  

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what is the pressure in side transformer under normal condition?

1 Answers  

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