In a single pass drilling operation, a through hole of 15mm diameter is to be drilled in a steel plate of 50mm thickness. Drill spindle speed is 500rpm, feed is 0.2mm/rev and drill point angle is 118°. Assuming 2mm clearance at approach and exit, the total drill time in seconds is (A) 35.1 (B) 32.4 (C) 31.2 (D) 30.1

In a single pass drilling operation, a through hole of 15mm diameter is to be drilled in a steel plate of 50mm thickness. Drill spindle speed is 500rpm, feed is 0.2mm/rev and drill point angle is 118°. Assuming 2mm clearance at approach and exit, the total drill time in seconds is (A) 35.1 (B) 32.4 (C) 31.2 (D) 30.1

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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