Answer / rajesh

dc motor works on principle of electromagnetic field creation
and torque production due to magnetic componentn(rotor )
placed along it in oriented direction and it is reversible

drives is a ckt to control speed of motor (using scr)
e.g dc drive for dc motor

What is the cascade control system and where is use in power plant give the detail with block diagram

1 Answers  

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what is the difference between 2 wire and 3 wire RTD- application wise,cost effectivity?

2 Answers  

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what is mean by hot loop and cold loop testing, whts different between both

2 Answers   Honeywell, PDO,

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which type inter lock use in petrochemical refinery,and oil & gas?

0 Answers  

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what is the responsibility of an instrument commissioning supervisor

0 Answers   Petrofac,

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what is cems analyzer explain with principle and drawing ?

0 Answers  

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hydrogen purity meter calibrating and commissioning procedure can be explained?

1 Answers  

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why we use npn sensor in vibration monitoring system

1 Answers  

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How does a single acting, spring return ball valve actually work? Does it require continuous air supply? 

0 Answers   Process Control Technologies,

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Explain bernoulli’s theorem.

0 Answers  

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Why the ammonia and Nitric Acid level indicators is with millimeter ? and What is the conversion form millimeters that level indicator indicate to weight ?

0 Answers   EHC,

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pls any1 sugges me book for plc,dcs & scada..

1 Answers  

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