Gate ME-2012 Question Paper With Solutions

Q 28.  In a single pass drilling operation, a through hole of 15 mm diameter is to be
drilled in a steel plate of 50 mm thickness. Drill spindle speed is 500 rpm, feed is
0.2 mm/rev and drill point angle is Gate ME-2012 Question Paper With Solutions. Assuming 2 mm clearance at approach
and exit, the total drill time (in seconds) is

(A) 35.1

(B) 32.4

(C) 31.2                 

(D) 30.1

Answer: (A)

Explanation:

Gate ME-2012 Question Paper With Solutions

Gate ME-2012 Question Paper With Solutions

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