Metrology - Surface Texture measurement

Which of the following is the best for the examination of surface finish?

• Touch inspection

• Visual inspection

• Scratch inspection

• Microscopic inspection

Upto which limits irregularities can be detected with touch inspection of a surface?

• 0.0001

• 0.001

• 0.01

• 0.1

Which of the following material is not used for rubbing on the surface to be inspected in scratch inspection?

• Softer material

• Harder Material

• Plastic

• Lead babbit

What is the limitation of microscopic inspection to check surface finish?

• An average value is needed

• Small portion of surface can be detected at a time

• A master finish surface is also needed

• It is necessary to inspect whole surface together

Which of the following is true for a method of measurement of surface finish with surface photographs?

• Different type of illumination is needed

• No effect of type of illumination

• Same type of illumination is needed

• Monochromatic light is needed

Under which group, does waviness in surface falls?

• Primary texture

• Secondary texture

• Tertiary texture

• Quaternary texture

For General purpose the roughness values are graded into 12 grades designed as

• N0 to N12

• 1 to 12

• N1 to N12

• 1 - 12

The Direction of Finishing is known as

• Flaw

• Lay

• Roughness

• Waviness

The pattern of work surface caused by the Movement of cutting tool is known as

• Primary texture

• Secondary texture

• Lay

• Flaw

The term used for surface irregularities or Imperfections without any pattern is known as

• Lay

• Flaw

• Roughness

• Waviness