Answer / karthick

0.7

Answer / kripesh m

0.7-0.8

Answer / shail

0.6

Answer / harish kumar

generally 0.7-0.9
but for air it is 0.7

Answer / teja

it is 0.7..
you can get answer for this kind of questions in "mechanical
objective " by r.k.jain...its really a good book for
competitive exams for mechanical engineers

Answer / kishore

.7

Answer / krishna

what is the prandtl no.of air?
How can you measure it and meaning of it?

Answer / qq

0.000000123

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conductivity of porous substance like sponge is depended or independent of pressure?

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what is Investment casting? how it is differ from other casting process?

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