Understanding Metric Threads and Finishes

Which one is the right way to measure the sizes for metric threads?

• M2, M7, M9

• 20 x 1.25 x M18

• M25 xM28 x 12

• M3 x 1.25 x 30

what we called this ?

• Thread

• Surface finish

• Diameter

• Screw

What we called this in mechanical engineering

• Straight

• knurling straight

• knurling diamond

• knurling straight diamond

How do you convert a radius of 5 mm to diameter?

• 5 mm

• 15 mm

• 20 mm

• 10 mm

Which one of the photos is present the Radius of the circle ?

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Which one is External Screw thread

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What are the two types of Surface finish we took? ( Two Answers are right)

• Material Romaval Prohibited

• Surface finish done

• Material Removal

• Material removal by machining is required

If a circle has a diameter of 10 cm, what is its radius?

• 3 cm

• 5 cm

• 7 cm

• 10 cm

What We call this Sign ?

• Run from here sign

• This Way sign

• Exit door

• skape sign

Define surface finish in simple terms.

• Surface finish refers to the color (لون ) of a surface.

• Is the texture and smoothness (نعومة )of a surface after processing.

• Surface finish is the weight (وزن ) of a material.

• Surface finish is the temperature (حرارة ) of a surface.