Metrology and Machine Tools Mid - I, September - 2014

1.__________ measures the downward slope of the top surface of the tool from the nose to the rear along the longitudinal axis
  • Side Rake Angle
  • Back Rake Angle
  • Lip Angle
  • Nose Angle
Answer: B
2.According to ASA a tool signature is given as 10, 10, 6, 6, 8, 8, 2. The number 6 indicates
  • Rake Angle
  • Cutting Edge Angle
  • Relief Angle
  • Nose Radius
Answer: C
3.Discontinuous chips will be formed when machining speed is
  • High
  • Low
  • Medium
  • Away from the design value
Answer: B
4.Machinability of a metal is determined by
  • Machinability Index
  • Maximum possible cutting speed
  • Maximum possible depth of cut
  • Maximum surface finish per cut
Answer: A
5.The lathe spindle is generally provided with a taper of
  • 1 in 5
  • 1 in 10
  • 1 in 15
  • 1 in 20
Answer: D
6.If the speed of Forward Stroke in a shaper is 12 m/min, the speed of Backward Stroke should be
  • 6 or 15 m/min
  • 12 m/min
  • 8 or 18 m/min
  • 6 or 24 m/min
Answer: C
7.A drill is specified as 12.00 – IS: 5101 HS – N – 118. In this the letters HS indicate that
  • The tool can allow of withstand High Speeds
  • The tool is made up of High Speed Steel
  • The tool has Hexagonal Shank
  • The tool is made by Hot Sintering Process
Answer: B
8.Counter-boring is the operation of
  • Enlarging the end of a hole cylindrically
  • Cone-shaped enlargement of the end of a hole
  • Smoothing and squaring the surface around a hole
  • Sizing and finishing a hole.
Answer: A
9.In orthogonal cutting system, cutting edge is
  • In line with direction of tool travel
  • Perpendicular to direction of tool travel
  • Perpendicular to shear plane
  • At 300 to the cutting plane
Answer: B
10.The spindle speeds of machine tools are usually designed to follow:
  • Arithmetic progression
  • Geometric progression
  • Harmonic progression
  • Logarithmic progression
Answer: B
11.Lathe bed is usually made of _______________
Answer: Cast iron
12.Small size cylindrical jobs on engine lathe are held in _____________
Answer: Collect
13._____________ is known as Independent chuck
Answer: Four jaw chuck
14.The ratio of speeds of cutting stroke to the return stroke in a shaper is ___________
Answer: 3:2
15.The part of the twist drill that is held in holding device is called ____________
Answer: Shank
16.To produce steep and short external taper on a lathe machine, the method most suitable is _______________
Answer: Swiveling the compound rest
17.The percentage content of Chromium in HSS is ___________
Answer: 4%
18._______________ measures the downward slope of the top surface of the tool to the side in direction perpendicular to the longitudinal axis
Answer: Side Rake Angle
19.Continuous chips will be formed when machining speed is ____________
Answer: High
20.If D is the diameter of the work pieces rotating at speed of N revolutions per min (rpm), for the cutting speed V, we have the relation ____________
Answer: V = πDN/1000