A Best Way To Crack Gorenment Job Exams

Mechanical Engineering Objective Questions { Production Technology }



400. In piercing and punching operations, the angle of shear is provided on
A.Die
B.Punch
C.Both on punch and die
D.Not provided at all
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401. In piercing operation, the clearance is provided on
A.Die
B.Punch
C.Half of die and half on punch
D.May be provided on any member
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402. In drawing operation, increase of punch radius
A.Has much influence on punch load and it -decreases
B.Does not influence the punch load much
C.Punch load increases
D.Punch load depends on other factors
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403. The spring back in steel is of the order of
A.0 to 0.5°
B.0.5 to5°
C.5 to 10°
D.10 to 13.5°
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404. The angular clearance provided on dies is of the order of
A.5 to 10°
B.3 to 5°
C.1/2 to 1°
D.0.1 to 0.5°
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405. Centre of pressure for a piece to be blanked or pierced in power press lies at
A.C.G. of area of piece
B.C.G. of perimeter of piece
C.Centre of piece
D.Centre of percussion
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406. In drawing operation, increase of die radius
A.Has much influence on punch load and it decreases
B.Does not influence the punch load much
C.Punch load increases
D.Punch load depends 011: other considerations
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