i am prepared for the rrb section engineer, please help me to guide , how to prepare and which books are good for technical, aptitude(arthimetic, resonning and g.k), send details to me by email: sudhakar.gudditi@gmail.com

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how can calculate COP?

5 Answers  

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what is meant by straem lines?

1 Answers  

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Explain why do the radiators in your house click when you start the heating system?

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Explain what does 0.125 inch stand for in 0.125 inch npt thread?

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What is pneumatic system?

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Examples of good insulators.

3 Answers   RRB,

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Please anyone send me previous papers of ONGC (Mechanical Engineering) at my email id jtndrkmr.vermaapril@gmail.com. Please help me.

0 Answers   CTS,

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A fan is handling hot air at 285 degC with flow of 411635 m3/hr, power consumed is 1165kW and efficiency is 66%. what will happen to flow, power and efficiency of the fan if a water spray system is introduced to reduce the air temperature up to 200 degC? (also please refer any document regarding this)

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advantage & disadvantage of using lpg in car ?

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what is the uses of control rod?

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which kind of force act when the piston slides inside the cylinder?and how to calculate that force or stress theoritically.

4 Answers  

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