Tuesday 2 September 2014

Questions

Why Power Plant Capacity Rated in MW and not in MVA?
Why AC rated in Tons, Not in kW or kVA? A Guide about Airconditioner and Refrigeration
Why alternator rated in kVA. Not in kW?
Why Motor rated in kW instead of kVA?
What are the causes of changes in voltage in Alternators when loaded?
How does electrical degree differ from mechanical degree?
Which type of Synchronous generators are used in Hydro-electric plants and why?
Why almost all large size Synchronous machines are constructed with rotating field system type?
Why do cylindrical Alternators operate with steam turbines?
Why are Alternators rated in kVA and not in kW?
Why we do 2 types of earthing on transformer ie: body earthing & neutral earthing, what is function.
Why ELCB can't work if N input of ELCB do not connect to ground?
Why series motor cannot be started on no-load?
Why in a three pin plug the earth pin is thicker and longer than the other pins?
Why Delta Star Transformers are used for Lighting Loads?
What are the advantages of star-delta starter with induction motor?
Why is the starting current high in a DC motor?
Why is the starting current high in a DC motor?
Why Delta Star Transformers are used for Lighting Loads?
Why in a three pin plug the earth pin is thicker and longer than the other pins?
Why series motor cannot be started on no-load?
Why ELCB can't work if N input of ELCB do not connect to ground?
Why syn. generators r used for the production of electricity?
Why, when birds sit on transmission lines or current wires doesn't get shock?
why link is provided in neutral of an ac circuit and fuse in phase of ac circuit?
Why is negative feedback more preferable in control system?
Why AC systems are more used or preferred over DC systems?
Why is star delta starter preferred with induction motor?
Why transformers are rated in kva instade of kw?

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