Air is a bad conductor of heat.why it becomes hot in summer?

2 Answers  

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What is the effect of addition of zinc in copper? What is the use of 70/30 brass ?

0 Answers  

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describe a type when u anticipated potential problems and development of preventive measure.

0 Answers  

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if you are standing on 30th floor & you asked to drink a water through straw .can you? water is in glass at the ground floor.

5 Answers  

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What will be expected the cut-off of J.E Mechanical exam of RRB on 19/12/2010 ?

0 Answers  

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What are the rules that must be kept in mind while designing castings?

0 Answers  

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Please informe me about bearing e.g ball bearing, what is meaning of number apearing in bearing or bearing housing. for example:- 6305 or UC P 206

2 Answers   SKF‎,

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How to calculate per kW how much fuel conssume in DG set?

4 Answers   BEC, L&T,

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What materials are used for engine propeller?

4 Answers  

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1. Mass of water is 100 lit. & Its initial temperature is 40ºC. Find the capacity of refrigerating machine (Ton of refrigeration) when it is converted in to 0 ºC ice, within 2 hours.

1 Answers  

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what are all the presser we should maintain in fire hydrent system?

1 Answers  

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What are materials used for manufacturing of gears ?

0 Answers   John Deere,

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