Mechanical Engineering - Production Engineering

1. 

A drill bit of 20 mm diameter rotating at 500 r.p.m. with a feed rate of 0.2 mm/revolution is used to drill a through-hole in a mild steel plate 20 mm thickness. The depth of cut in this drilling operation is

A. 0.2 mm
B. 10 mm
C. 20 mm
D. 100 mm

Answer: Option C

Explanation:

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2. 

The tail stock and the carriage of a lathe may be guided on same or different guideway.

A. True
B. False

Answer: Option A

Explanation:

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3. 

In order to achieve a specific surface finish in single point turning, the most important factor to be controlled is

A. depth of cut
B. cutting speed
C. feed
D. tool rake angle

Answer: Option C

Explanation:

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4. 

Surface grinding is done to produce

A. tapered surface
B. flat surface
C. internal cylindrical holes
D. all of these

Answer: Option B

Explanation:

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5. 

Gear finishing operation is called

A. shaping
B. milling
C. hobbing
D. burnishing

Answer: Option D

Explanation:

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