The following device is used to determine the mix ratio of water-soluble coolants:
a) Diffract meter b) Hydrometer
c) Refract meter d) None of these
The use of metal working fluids
a) Increase the tool life
b) Produce better surface finish
c) Prevent rise in temperature
d) All of these
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1st one shayad b
aur
2sra wala shayad d
hun.
aisa mujhe lgta hai
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Explanation:
Q1.REFRACT METER
Q2.ALL OF THE ABOVE
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