CHAPTER 4 MEASUREMENTS OF GEOMETRICAL FEATURES

1. Which of the following is a type of geometrical feature?

• Diameter

• Flatness

• Length

• Volume

2. What tool is commonly used to measure flatness using a reference laser plane?

• Vernier caliper

• Dial indicator

• Laser transmitter

• Micrometer

3. How many reference points are typically used when measuring flatness on a circular plane like a flange?

• 2

• 3

• 4

• 5

4. What does straightness measurement primarily evaluate?

• Angular deviation

• Circularity of a surface

• Deviation from a straight line

• Surface roughness

5. What system can be used for straightness measurement without a separate laser transmitter?

• Dial gauge system

• Coordinate measuring machine

• Shaft alignment system (S and M units)

• Profile projector

6. Which measurement method uses an angular prism to deflect a laser beam by 90°?

• Perpendicularity measurement

• Symmetry measurement

• Angularity measurement

• Parallelism measurement

7. Perpendicularity measurement checks whether a feature is at what angle to a datum?

• 30°

• 60°

• 90°

• 120°

8. What device is commonly used for fast and automated perpendicularity checks?

• Optical microscope

• Sine bar

• Vernier height gauge

• Electronic/Digital height gauge

9. Symmetry measurement involves which type of tolerance zone?

• Two perpendicular planes

• Two concentric circles

• Two parallel planes disposed symmetrically

• A cylindrical tolerance zone

10. What does angularity tolerance control?

• The roundness of a feature

• Deviation of a surface from a given angle relative to a datum

• Parallel alignment between two surfaces

• The diameter difference between internal and external surfaces