If VFD is On but no starting commond on it. so how many outpout voltages of VFD

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how to give earthing in ships?

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what happen if we supply 220v dc suppy to the bulb or tube

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hi guys please tell me the procedure for mesuring the coil resistance of 3ph induction motor?

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need help, please can someone tell me how can i calculate the main breaker and branches breakers to distribution panels (MDB) depending on the load ampere .. i really need it but can't find any site >>

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Can any one help me how to set an overload set the range from 2.8A to 4A , rated motor current 22A, CT 60/5A

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What is polar plot?

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what are the different sizes of U.G. cable & where these cabl;es are used according to voltage ..

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What is Horan Gap Fuse? Where it is used?

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A transformer is used to light a 24volts,70watts lamp from a 240a.c main.The current in the main cable is 0.35A. Calculate, (1) The efficiency of the transformer. (2) the current in the lamp.

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One 200 V, 100 W bulb is connected in series with primary of a 200 V, 10 kVA transformer. If its secondary is kept open circuited, then the bulb would have (1) Full brightness (2) Poor brightness (3) A little less than full brightness (4) More than full brightness...explain

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We have 2 11kv/433v transformers for 2saperate acb for mv panels and 1 bus coupler acb. Suppose I’ll close bus coupler what will happen or it will be share the load. Please suggestion and any modification required.

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