Cochin Shipyard Assistant Engineer Machinist Paper 2020
Exam Date – 12th Feb 2020
In the planning machine the depth of cut is given by ?
(a) Adjusting tool slide
(b) Rotating the feed screw of the tool holder
(c) Moving cross slide
(d) Lifting the work piece
b
The principle of ‘Interchangeability’ is normally employed for
(a) Mass production
(b) Production of indentical parts
(c) Parts within the prescribed limits of sizes
(d) All of the options
d
The tooth thickness of rack is meausred by ?
(a) Universal vernier caliper
(b) Grear tooth vernier caliper
(c) Flange micrometer
(d) Gear tester
b
Which of the following cutting conditions greatly affects the tool wear ?
(a) Cutting speed
(b) Feed
(c) Depth of cut
(d) Cutting length
a
Thread ring gauges are used check external threads. Separate ‘Go’ and ‘No Go’ gauging members are provided. Which one of the following screw thread elements is not checked with the ring gaguges?
(a) Pitch
(b) Helix angle
(c) Profile
(d) pitch diameter
b
Which tyhpe of job motion is there in drilling operation?
(a) rotary
(b) translating
(c) fixed
(d) plain
c
The ability by which a measuring device can detect small differences in the quantity being measured by it, is called its
(a) Damping
(b) Sensitivity
(c) Accuaracy
(d) Variation
b
The coating materials for coated carbide tools, include
(a) TiC, TiN and NaCN
(b) TiC and TiN
(c) TiN and NaCN
(d) TiC and NaCN
b
Which of the following is the example of cutting shaping process?
(a) Knurling
(b) forging
(c) pressing
(d) drawing
a
Traversing of tool parallel to th eaxis of job is termed as _____
(a) cross feed
(b) longitudinal feed
(c) both cross feed and traversing feed
(d) mixed feed
b
The following acts as driving shaft in Lathe
(a) Counter shaft
(b) Spindle shaft
(c) Lead screw
(d) Feed
a
The following is also known as Tool rest
(a) Saddle
(b) Cross slide
(c) Compound rest
(d) Tool post
c
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