Q.1
What is the relation between variation due to observation, manufacturing process and measuring process of a product?
  • a) σobservation = σprocess + σmeasurement
  • b) σobservation = σprocess – σmeasurement
  • c) σobservation = σprocess * σmeasurement
  • d) σobservation = σprocess / σmeasurement
Q.2
What is the maximum permissible error for class I micrometers?
  • a) 0.002 mm
  • b) 0.004 mm
  • c) 0.008 mm
  • d) 0.016 mm
Q.3
What is the permissible error in the perpendicular motion of ocular microscope column w.r.t. The work stage overmm movements?
  • a) 0.04 mm
  • b) 0.05 mm
  • c) 0.07 mm
  • d) 0.06 mm
Q.4
Which of the following is used to check change in ocular lines position due to column rotation in universal micrometer?
  • a) Dial indicator
  • b) Slip gauges
  • c) Control shaft
  • d) Universal microscope
Q.5
What is the least count of clinometer which is used to check reading of column rotation used for setting of helix angles in universal micrometer?
  • a) 1’
  • b) 2’
  • c) 3’
  • d) 4’
Q.6
Which of the following is true for the calibration of instruments?
  • a) In casting and fabrication shops the measurements made are of more precise nature as compared to those made in machine shop and tool room
  • b) Periodical calibration is made for optical measuring instruments
  • c) There is no need of periodic calibration in universal microscope
  • d) Preventive maintenance is not necessary for optical measuring instruments
Q.7
What is the permissible error in straight movement of longitudinal and transverse table in horizontal plane?
  • a) 0.002 mm
  • b) 0.003 mm
  • c) 0.004 mm
  • d) 0.005 mm
Q.8
Which of the following is true for checking the Relative perpendicular motion of the longitudinal and transverse carriage?
  • a) The permissible error allowed is 0.005 mm in 2500 mm length.
  • b) This is checked using a slip gauges
  • c) Precision square of class I or 0 is used
  • d) Maximum error in precision error is of ± 10″ in squareness
Q.9
What is the maximum permissible error in wear of centres?
  • a) 0.04 mm
  • b) 0.03 mm
  • c) 0.02 mm
  • d) 0.01 mm
Q.10
What is the least count of dial indicators which can be calibrated using passmeter?
  • a) 0.01 mm
  • b) 0.03 mm
  • c) 0.05 mm
  • d) 0.07 mm
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