Answer / bose

Condenser is the old term for capacitor. In a motor circuit,
there are two uses for capacitors, the first is to provide
extra current to get the fan motor to overcome it's own
resistance to movement, the way this works is that the
capacitor charges until it can supply the requisite current,
then discharges, not unlike giving an airplane motor a
'kick' before it can start proper. The other use is snubbing
inductive kickback. When a inductive load, such as the coil
windings on a motor, are switched off, the properties of an
inductor can cause a massive power surge which can damage
control circuits. to mediate this problem, small capacitors
are put in parallel over the load, so that the sharp
'inductive kick' has a discharge route through the capacitor
(since the 'kick' is a sharp voltage spike, it looks like a
high frequency signal). If the capacitor is large, it's
probably used for the former, if small, the latter.

Answer / antaratara ghosh

The condenser/capacitor in fan is used to start the motor
since it is a single phase induction motor and is not
capable of self starting..This capacitor helps the starting
current..

Answer / shakeel tu

cooling purpose

Current Transformer's star point must face the protected object for the relay operation?

2 Answers   Siemens,

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3 Answers  

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Draw SLD feeding from the SS up to distribution board of the load, calculate cable size, breaker sizes, and meter for the following case: Ground Floor: electric room, pump room, 5 shops, each is 15 KW First Floor: 5 shops, each is 15 KW Second Floor: showroom 30 KW Service Loads: water pump 3 KW (3ph) , fire pump 3 KW (3ph), and one DB service 12 KW (3ph).

0 Answers   FEWA, HMK,

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in 31.5 mva power transformer how to set of wti and oti?

1 Answers   HMEL,

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why commutator are not used in rectification purpose in power electronics?

1 Answers  

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what is the difference between ground, earth and neutral?????????....

1 Answers  

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In Extended Delta transformer, by which method we can measure the extended angle of transformer?

1 Answers   Usha Martin,

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PIU how does work?

0 Answers  

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1 Answers   Mukand,

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1 Answers   GATE,

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What are the advantages of thermal power plant?

0 Answers  

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what does hapen if suddently frequency doubled

1 Answers  

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