A very soft whisper may have noise level of
A) About 100 db
B) About 140 db
C) About 30 db
D) About 40 db
E) About 10 db
Correct Answer:
Verified
Q3: The efficiency of abrasive particles depends up
A)purity
B)uniformity
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Q5: In centreless grinding the work piece advances
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Q7: Shell sands are coated with
A)molasses
B)urea formaldehyde
C)carbon disulphide
D)Parting
Q9: The width of slot eut by a
Q10: Swell is a defect in castings due
Q11: In EDM the material of the tool
Q12: In a centre lathe gear box for
Q13: In rubber bond for grinding wheels, sulphur
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