Answer / k.prakashchandra

Ceiling fan has a single phase capacitor start and run
sqirrel cage motor.The consructoin differs from other
motors as it has the rotor (armature)outside the field
(stator),sorrounding it.The field is facing outwards.The
value of capacitor is 2-4 mic farads

Answer / ravinder sharma

ceiling fan is actually a single phase inductin motor.
there are both primary and secondary sides . there is very
small air gap between them for reducing the magnetic flux
losses. there is not enough torque generated by the single
phase .so external starting torque is given by using the
capacitor.different capacitance are used for different type
ratings of fans.

how the rotating magnetic fieldis produced in induction machines??? give the correct explanation.is there any mathematical expression for the same?

1 Answers  

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for 750 kw LT load what will be the ht kva

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keeping in view of parallel operation which of the 3 phase transformer connection are possible? a)delta-delta to delta-star b) delta-delta to star-delta c) star-star to delta-delta d) delta-star to star-delta

4 Answers   Ecil, Siemens,

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in our all power plant have connected in grid and grid voltage and plant voltage is same, but as per as electrical concept the power will transmit from high potential to low potential but here altough same,then how power transmit from power plant to grid.

0 Answers  

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y r manufacturing fan is running into clockwise direction?y they can made in anticlock direction?pls give rply/ venkat.gattupalli@gmail.com pls send to my mail....

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MCB MCCB ACB VCB

1 Answers  

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which type of material is used for making motor encloser

3 Answers  

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Is current shock due to voltage or current? pls answer

2 Answers   ABB,

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What is the difference between shortcircuit current, rated current of cable & MCB with example? What will be the size of cable required for 5.5 KW motor (Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.

0 Answers  

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what is derating?, why it is neccesary, it is same for all means for drives, motors,and cables.

1 Answers  

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What is maximum demand?How can we caluclate it?

3 Answers   TATA,

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how to caculate cable size for given amperes

5 Answers   RVNL,

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