Answer / guest

motor stops

Answer / kishore

the motor comes to rest when we open the field winding of a
dc motor

Answer / gajanan

in dc shunt motor if field will open field current will be
zero and motor stops rotating...

Answer / ramana

motor function will be stopped and its armature rotation
comedown slowly

how commomn gate triggering is given for TRIAC ? other thyristor wont be efffected?

0 Answers   BARC,

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When i went to a interview the interviewer ask me a question for that i cant able to answer him if anyone knows answer me How will you design a capacitor bank for a plant? if my p.f is 0.6 i have to improve it to 0.9 or 1 what kind of steps i have to do? and is there any formula for calculating this?

6 Answers   APNPDCL,

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I have a shop heater with a 1/3 hp capacitor start, induction motor driving the fan. Intermittently, the fan motor speeds up significantly for several seconds (15-60 sec) then slows to normal operating speed. The manufacturer suggested changing the capacitor which made no sense, but I did it to no avail. Could this possibly be caused by the centrifugal switch intermittently reconnecting the start winding?

1 Answers  

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what efficiency at 70% loaded transformer

1 Answers   EEEC,

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what is efficient load of transformer in percentage

4 Answers  

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what is the formula for computing cable tray size & capacity

0 Answers  

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can SMPS work in DC supply ?

10 Answers   HCL, IBM, Reliance,

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What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning

0 Answers  

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what is reasion of harmonic create the power supply , And how to reduced to harmonic

1 Answers   Turbo,

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Why do we need interlocking in a HT metering or Ring main unit switchgear?

0 Answers  

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what is armature reaction?explain in simple words?and what is its infleunce on dc motor

16 Answers  

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What is static Device & Mechanical device? Is transformer a static device?

5 Answers   ABB, Emco,

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