MANUFACTURING AND PRODUCTION TECHNOLOGY QUIZ

Calculate the weld per minute, work speed of circular electrode of 220 mm diameter for carrying out seam welding at 4 welds per cm on 1.6 mm thick mild steel tube. Welding cycle consists of 3 cycles ‘on’ and 2 cycles ‘off’ Power supply is at 50 Hz.

22 welds/min, 55 mm/min

600 welds/min, 1500 mm/min

3000 welds/min, 75 mm/min

500 welds/min, 1250 mm/min

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The angle between the face and flank of the single point cutting tool is known as

Rake angle

Point angle

Lip angle

Clearance angle

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In an interchangeable assembly, shafts of size 25.000 -0.010⁺⁰∙⁰⁴⁰ mm mate with holes of size 25.000 -0.020⁺⁰∙⁰³⁰, the maximum interference (in microns) in the assembly is

10

20

40

30

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The process of removing metal by a cutter which is rotated in the same direction of travel of workpiece, is called

Down milling

End milling

Face milling

Up milling

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When the shear angle is small

Path of shear is large and chip is thin

Path of shear is short and chip is thick

Path of shear is large and chip is thick

Path of shear is short and chip is thin

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A type of welding flows, which is the result of a perfect proportion and mixture of acetylene and oxygen and is used for fusion welding of steel and cast iron, is

Oxidizing flame

Oxy-acetylene flame

Carburizing flame

Neutral flame

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The cutting speed for drilling aluminium, brass and bronze with high speed steel drills varies from

60 to 90 m/min

24 to 45 m/min

10 to 20 m/min

18 to 30 m/min

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In which of the following machine, the work is usually rotated while the drill is fed into work?

Sensitive drilling machine

Radial drilling machine

Gang drilling machine

Deep hole drilling machine

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In ECM, the material removal is due to

Fusion

Ion displacement

Corrosion

Erosion

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What is the type of welding defect caused due to shrinkage during solidification and by weld stresses called?

Incomplete fusion

Mismatch

Lamellar tearing

Shrinkage void

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