Answer Posted / prashant

actually in all rotating m/c ac is generated in rotor. and
commutator acts as invertor in motor and as rectifier in
generator

If increased the frequency up to 1000 then what changes shows in voltage?

2426

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1 hp is equal to how much watt?

1286

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regarding safety what would u consider the most important rules to observe when inspecting electrical equipment?

2062

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In ups static switch if i gives the supply at output end it will open the circuit in stactic switch or not if it will open then how it operates.

2317

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he compression ratio for a petrol engine generally lies between

1308

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Sate maximum power transfer theorem?

1132

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Actuality I have at home electrical panel with 220v 50hz, and I want to converter from there to 110v 60hz, to wiring on the half of my house. Also I like to keep another half of my house with the original 220v 50hz. What is the best and safety way to do?

1821

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what is the function of anti pumping relays? what is KVAR? How it is generated in alternator? What is 3rd Harmonics? What is IDMT relay?

2317

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HI SIR, AM PREPARING FOR RRB FOR SECTION ENGINEER POST. PLZ SEND ME THE PREVIOUS QUESTION PAPERS AND HELP ME. I HAVE NO ENOUGH TIME MY EXAM DATE IS 22ND JUNE.... MY EMAIL ID IS nalla.amarnath@gmail.com

1949

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Can you explain about pole discrepancy scheme

2188

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When semiconductor fuse does save thyristor in each cycle of conduction? Why under voltage setting keep less in SPRS and more in DC drive?

2101

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What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?

2004

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who many types of fire explane with exmple

2222

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What is the reason of polyphase induction motor tripping suddenly on high current during running at 70% laod? Motor IR , winding resistance & inductance balance. Motor no load current is balance and ok as per mgfr. data.

2424

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how to test YNyn0 vector group in transformer?

3903

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