316. A cylindrical section having no joints is known as ,
A.Seamless
B.Ideal
C.Economical
D.Perfect

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317. Seamless tubes are made by
A.Piercing
B.Extrusion
C.Cold rolling
D.Plug rolling

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318. The operation of removing the burr or flash from the forged parts in drop forging is known as
A.Lancing
B.Trimming
C.Coining
D.Shot peening

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319. Metallic cans are usually mass produced by the following process
A.Embossing
B.Coining
C.Spinning
D.Drawing

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320. Spinning operation is carried out on
A.Hydraulic press
B.Mechanical press
C.Lathe
D.Milling machine

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321. Production of contours in flat blanks is termed as
A.Blanking
B.Piercing
C.Perforating
D.Punching

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322. Thread rolling is somewhat like
A.Cold extrusion
B.Cold machining
C.Cold rolling
D.Cold forging

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