Answer / happy

as we know that our ceiling fans are 1-phase operated. so we have that capacitor for splitting another phase in order to provide enough torque for self starting. So due to that phase splitting, capacitor and coil sounds due to little riple factor... so you need to change the capacitor(condenser) or avoid operating fan on invertor's supply...

Answer / pillay

1)check the bearings
2) something is rubbing on to each other
3) there is a snake in the fan

what sq.mm copper pvc wire need for ac load current 25amps for 230v ?

4 Answers   Khadamat, Siemens,

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What iz main protection of mediuum voltage motors and what iz the standard IR voltage of 6.6 and 11kv motors.

1 Answers   GE,

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we all know that both the generator and motor are electromechanical conversion devices.....then why we rate motor in kw and generator in kva????

4 Answers   KSEB,

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what is the relation between frequency and inductive reactance in a d.c supply?

2 Answers   L&T,

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how can calculate static 3phase 4wire CT & PT operated energy meter constant when calibrating using refference meter suppose we have 11kv/110v PT and 30/5A CT, the meter constant is 160imp/kwh, where meter is showing MW energy? give me solution which constant i feed in my refference meter for calibration of energy meter?

3 Answers  

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2 Diesel Generators 900KVA connected to the bus bar for essential load as an alternative for power taken from 11/440V 3KVA Transformer supplying this bus bar. my question here is in the event of power failure on 11KV side can I feed the power to 11 KV bus by using the same transformer as reverse feed, what will be the inrush current???

3 Answers   Ashok Leyland,

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what is the function of RVT

4 Answers   RMSI,

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what is the effect of higher value of GD???

0 Answers   VEPL,

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solar energy light efficiency & disadvantages?

0 Answers  

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WHAT HAPPENS IF STARTER OF A FLUROSCENT LAMP IS SHORT CIRCUITED AND WE PUT THE SUPPLY ON?

1 Answers  

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IF 3 NOS.OF HEATERS,3KW CAPACITY EACH,1 NO.HEATER CONNECTED IN R PHASE,1 IN Y PHASE AND 1 IN B PHASE.THEIR END POINTS CONNECTED IN STAR.IF I CONNECT THIS STAR POINT TO NEUTRAL OR DO NOT CONNECT TO NEUTRAL.WHAT WILL THE DIFFERENCE.

3 Answers  

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two transformers of the same type, using the same grade of iron and conducting material, are designed to work at same flux and current densities, but the linear dimension of one are two times of the other in all respects. The ration of kVA of the two transformer closely equal to................? options: 16, 8, 4, 2

2 Answers   Vizag Steel,

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