What happent when a AC motor(no break and starters ) stop and suddenly start . ? Starting current low or high?? Why?

1 Answers  

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Hi all I had applied for the RRB test in the ELECRICAL category. I would be pleased if any of you can sent me previous year question papers. Please forward the question papers to varshashahi@yahoo.com Thanks and regards Varsha

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Why VCB is required and ACB is also require? what is the BDV of Trafo of 11/33 KV

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What is the formula to calculate the rating of power cable for three phase current.

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what is meant by transformer differential protection ?

3 Answers   BFL,

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how can we measure 220kv or more than these voltages ...?and also how can we conform whether we r getting 220kv from generating stations throuth the h v transmission lines?

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Define maximum demand?

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1. what type of winding of slip ring ac induction motor rotor and why. 2. how the heating element use in two phase (415 volt)and what rating of element, you prefered.

1 Answers   Simbhaoli Sugars,

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railway exam in asst loco pilot old test paper

25 Answers   Indian Railways, Loco Pilot, RRB, Southern Railways, TATA, Vimal,

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We are installing a 1.6 MVA transformer at our crusher plant and the feeder of HPSEBL is 2 km away at substaion . and a VCB is installed in the substaion which is 2 km away from transformer so we need another VCB near the transformer.

2 Answers   SCPL,

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what is the range of thermal overload and over current. Answer should be in percentage of current.

0 Answers   RMSI,

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how to test reverse power trip?

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