what is meant by motor protection relay & its working principle ?k

1 Answers   Pricol,

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What is meant by earthhing of a magnetic flow meter and when to use empty pipe detection?

0 Answers  

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We have .ht motor which is 60Hz.we run on 50Hz.so that it's speed reduce but we had one prob.that motor winding temp increase up to 135 deg.we want reduce this temp.what to do?we arrange ext.cooling fan but not much effect.we want reduce this temp. Inhouse without affecting much.cost. also don't want reWINDING OF MOTOR?

3 Answers  

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before transformer oil dielectric strenght tests are taken the oil should be allowed to settle to remove option 1 air bubbles 2 gasses 3 contamination 4 water

0 Answers  

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what is PWM in IGBT and how it works for drive.?

0 Answers   BRG,

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a wire in which bulb is connected there is two terminal when one terminal is connected to phase than why the value of current shock in nutral terminal is max. or large??

4 Answers  

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how to calculate the input current in singel phase and 3phase supply to 5kva ups

1 Answers   Gravity India,

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What is meaning of Float Charging of Batteries???

2 Answers   Emerson,

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how will reduce the voltage. if 12volt/250ma transformer toreduce 6 volt

0 Answers  

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what is main reason for grid earthing for any industry

4 Answers  

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Why does The speed of motor used in elevator remain constant irrespective of load??

1 Answers  

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How to calculate KW what is the formula for KW.

18 Answers   Toyota, UU,

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