337. Flange wrinkling is the defect found in
A.Blanking
B.Deep drawing
C.Bending
D.Cold rolling

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338. Laser is produced by
A.Graphite
B.Ruby
C.Diamond
D.Emerald

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339. Injection moulding is the ideal method of processing
A.Plastics
B.Thermo-setting plastics
C.Thermoplastics
D.Non-ferrous materials

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340. Compression moulding is the ideal method of processing
A.Plastics
B.Thermo-setting plastics
C.Thermoplastics
D.Non-ferrous materials

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341. Slugging is the operation of
A.Removal of excess metal from the edge of strip to make it suitable for drawing without wrinkling
B.Cutting of the excess metal at edge which was required for gripping purpose during press working operation
C.Cutting in a single line across a part of the metal strip to allow bending or forming in progressive die operation while the part remains attached to the strip
D.Punching in which punch is stopped as soon at the metal fracture is complete and metal is not removed but held in hole

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342. A 20 tonne press implies that the
A.Weight of press is 20 tonnes .
B.Press can handle works Weighing upto 20 tonnes
C.It can exert pressure upto 20 tonnes
D.Its foundation should be designed for 20 tonnes

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343. The fatigue strength of metal is improved by setting up compressive stresses in the surface by a process known as
A.Lancing
B.Spinning
C.Hemming
D.Shot-peening

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