Answer / brajesh kumar

hardness have no unit it can be determine by hardness no... which we get from exp..

Answer / rams

if the experiment is conducted by Rockwell hardness means unit is RHN,or Brinell hardness means BHN,or Vickers test means VHN..

Answer / b nagaraju

it is the ability of material to resist deformation undre load

Answer / rohit mathanker

it is unitless it is define by gread

Answer / arvind yeram

vpn , Rc

Answer / saurav sharma

the unit of harness is none but it is known by hardness
nuber

Answer / arun kumar

No unit

Answer / omkar

FOr hardness their is no unit..........but there is a
possibility of unit i.e N/mm2

Answer / guest

caco3

Answer / ravinmech52

Depth of penetration is the unit of hardness.

i want sample question paper for SECTION ENGINEER IN RRB.

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twist drill angle

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tell me about special purpose machines

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What will you check if one cylinder of your engine is not like the others?

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• How can you justify it?

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how cooling tower height selected?

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How can one estimate the flow from a centrifugal pump after an accident where the pipe attached to the pump discharge breaks? Extrapolate the characteristic pump curve to H=0?

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What are the advantages and disadvantages of gear drives over belt drives?

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