Answer / rajesh

blowers for blowing cooled air inside train
fan for exhaust hot air
compressor ( dc /induction motor ) for cooling liquid
refrigerant to gas phase

pump for assisting flow if exhaust is above toilet at roof
ckt breaker , switch panel for control
temperature , pressure sensor
lead acid battery in case of express train
etc

which bridge is used to measure frequency?

2 Answers  

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What is the field weakening mode of a ac motor?

1 Answers   L&T,

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if we going for high voltage usages what are the considering factors, why those factors are effected.... please give me an answer related motor factors like wnidnig, frame, temp etc

1 Answers   ABB,

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What is cross over distortion? How it can be eliminated?

0 Answers  

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Technical specification of a wind farm

1 Answers  

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Why we do 2 types of earthing on transformer (ie:)body earthing & neutral earthing , what is function. I am going to install a oo kva transformer & 380 kva dg set what should the earthing value?

0 Answers  

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what is bus pt and what is the function of it ???

8 Answers   TATA,

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what is the use of starter in tube light?and what it contains

12 Answers   L&T, RRB,

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What does the term supermesh means?

0 Answers  

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EXPLAIN METOD OF IMAGE OF TRANSMISSION LINE/ WHAT ARE ITS PRACTICAL APPLICATION?

0 Answers   Coal India,

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How to choose the vector group for the step up and step down transformers??? Tell me the which vector group is suitable for step up and step down transformers and whats the reason to choose and whats the benefits???

0 Answers   L&T,

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What is the difference between type1 and type2 relay protection co-ordination for motor feeders

0 Answers   DAE,

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