4TH SEM. TEST 5

What is direction of finishing in surface texture?

• Flaw

• Lay

• Waviness

• Roughness

Which of the following symbol indicates finest surface?

• ~

• 

• 

• 

Which material is used to make the stylus of mechanical surface indicator?

• Mild steel

• High carbon steel

• High speed steel

• Diamond

Which surface is finished by honing?

• External cylindrical surface

• Internal cylindrical surface

• Both external and internal surface

• Flat surface

Which one of the following is disadvantage of tailstock offset method?

• Power feed can be given

• Good surface finish can be obtained

• External taper thread can be produce

• Only external taper can be turned

Which axis the tool moves in taper turning attachment?

• Perpendicular to lathe axis

• Parallel to lathe axis

• Angular to lathe axis

• Vertical to lathe axis

Which of the following structures of steel is obtained due to the drastic cooling form the austenite structure?

• Pearlite

• Cementite

• Marten site

• Ferrite

Which one of the following heat treatment process produces a scale free surface on the components?

• Flame hardening

• Flame hardening

• Nit riding

• Induction hardening

What is 7 with expression of fit 30H7/g6?

• Hole tolerance grade

• Shaft tolerance grade

• Shaft and hole tolerance

• Shaft and hole allowance

Which one of the advantage of mass production?

• Special purpose machinery are necessary

• Jigs and fixture are needed

• Gauges are to be used

• Time for manufacturing of components is reduced