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. In Die casting process, the molten metal is
i) Feed in the cavity of a metallic mould by gravity
ii) Injecting at high pressure into metallic mould
iii) Poured and allowed to solidify while the mould is revolving
iv) Forced by inserting a plunger in the cavity.
)
)

A) Only (i & iii) B) Only (iii & iv)
C) Only (i) D) Only (ii)
. Long cast iron water supply and sewerage pipes are generally produced by
A) Centrifugal casting B) Sand casting
C) Permanent mould casting D) Ceramic moulding

. Flat forgings of gear blanks are usually made by
i) Upsetting the bar stock
ii) Flattening the bar stock

)
ii) Swaging the bar stock
iv) Fullering the bar stock
)
)

A) Only (i & ii) 8) Only (i, iii & iv)
C) Only (ii & iii) D) Only (i)
. Which of the following is a step of powder metallurgy ?
A) Powder production and blending B) Sintering
C) Compaction and shaping D) All of the mentioned

. The amount of heat produced in resistance welding is
i) Directly proportional to square of current
ii) Inversely proportional to square of current
iii) Directly proportional to duration of time

)
)
iv) Inversely proportional to duration of time
)
)

A) Only (i) B) Only (ii & iv)
C) Only (i & iii) D) Only (iv)
. The welding process in which use non consumable electrodes.
A) Manual Arc welding B) Gas Tungsten Arc welding
C) Submerged Arc welding D) Gas Metal Arc welding