CEPTAM Technician Machinist Exam Paper
Machinist CEPTAM DRDO Sample Paper-1
CEPTAM- Machinist Technician Model Question Paper
1.A finish cut is given to improve the surface finish of a rough milled workpiece?
A.Decrease cutting speed, feed rate and depth of cut
B.Increase feed rate, depth of cut and reduce cutting speed
C.Increase feed rate, depth of cut and cutting speed
D.Increase cutting speed, reduce feed rate and depth of cut
Ans: D
2.The normal module of a helical gear with real module (m) of 6.62 and having an angle of 25 deg is?
A.6.62 x sin 25 deg
B.6.62 x cos 25 deg
A.6.62 x tan 25 deg
A.6.62 x cot 25 deg
Ans: B
3.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 gauges?
A.Pitch
B.Helix angle
C.Profile
D.Pitch diameter
Ans: B
4.Morse taper is one of the internationally accepted standard tapers. The morse taper are available in numbers from?
A.0 to 7
B.0 to 8
C.1 to 7
D.1 to 8
Ans: A
5.A gear wheel has 36 teeth (z) and 3 mm module (m) its pitch diameter cutter?
A.12 mm
B.75 mm
C.80 mm
D.108 mm
Ans: D
6.A main purpose of using worm and worm wheel drives in machines and their accessories is to?
A.Transmit large torque
B.Provide large speed reduction from worm shaft to worm wheel
C.Transmit higher speeds
D.Provide large speed reduction from worm wheel to worm shaft
Ans: B
7.The tooth thickness of rack is measured by?
A.Universal vernier caliper
B.Gear tooth vernier caliper
C.Flange micrometer
D.Gear tester
Ans: B
8.There are two types of milling processes based on the direction of cutter rotation and work feed direction in up cut milling?
A.The work is fed in the same direction as the rotation of the cutter
B.Chip removal starts at the thickness part
C.Machine with backlash eliminator is essential
D.The work is fed against direction of the cutter rotation
Ans: D
9.A Shaft is turned in one finish cut which one of the following parameters will directly influence the machining time?
A.Cutting depth
B.Setting angle
C.Diameter of work piece
D.Tool travel distance
Ans: D
10.In a 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
Ans: B
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