UNIT II QUIZ

Testing flatness or straightness of a surface is possible using

• Vernier caliper

• Micrometer

• Autocollimator

• All of the above

Which of the following is true for the calibration of instruments?

• In casting and fabrication shops the measurements made are of more precise nature as compared to those made in machine shop and tool room

• Periodical calibration is made for optical measuring instruments

• There is no need of periodic calibration in universal microscope

• Preventive maintenance is not necessary for optical measuring instruments

Which of the following is most convenient to measure the cylindrical ring gauges?

• Slip gauges

• Micrometer

• Measurement by using rollers

• Pneumatic comparators

At which part spirit level is present in the clinometers?

• On a rotary member

• On the fixed member

• On the base

• On the circular scale

Which of the following is not a common function of clinometers?

• Determine included angle of two adjacent faces

• Checking angular faces

• Checking relief angles on small cutting tools

• Setting inclination table

What is the range of readings which can be read directly in precision microptic clinometer?

• 0 deg to 90 deg

• 0 deg to 180 deg

• 0 deg to 270 deg

• 0 deg to 360 deg

Which of the following is not true for autocollimators?

• Has an infinity telescope

• Has an autocollimator

• For smaller angle it is not accurate

• Very high sensitivity

What is the main use of steel cube reflector in autocollimator?

• To provide a 90 degree standard in 3 planes

• For general bench use

• Calibrate surface plate

• For setting but not checking perpendiculars

What is the range of bevel protractor?

• 0-90°

• 0-180°

• 0-360°

• 90-270°

Up to which angle sine bars can measure the angles?

• 45 degree

• 60 degree

• 90 degree

• 120 degree