MCQs of Foundary Technology (Manufacturing Technology - 3151912)

Showing 101 to 110 out of 125 Questions

101.

The main advantage of shell moulding is that

(a)	A metallic pattern is used
(b)	The moulds are stronger
(c)	Thin sections can be easily obtained
(d)	Highly complex sections can be easily obtained

102.

The impurities in true centrifugal casting

(a)	Get collected at outer surface
(b)	Mix up thoroughly throughout
(c)	Get collected at the inner surface
(d)	Get collected in the middle portion in between inner and outer surface

103.

True centrifugal casting

(a)	Is used to ensure purity and density at extremities of a casting
(b)	Is used to cast symmetrical objects
(c)	Is used to obtain high density and pure castings
(d)	Uses a heavy cast iron mould to act as chill

104.

In slush casting process

(a)	Molten metal is fed into the cavity in metallic mould by gravity
(b)	Metal is poured into die cavity, and after a predetermined time the mould is inverted to permit a part of metal still in molten state to flow out of cavity
(c)	Cavity is filled with a precalculated quantity of metal and a core or plunger is inserted to force the metal into cavity
(d)	Metal is forced into mould under high pressure

105.

The tolerances produced by the investment casting process are of the order of

106.

Graphite moulds are used for continuous casting process in order to provide

(a)	Non-wirig agent
(b)	Self lubricating qualities chilling effect
(c)	Heat resisting medium
(d)	Quick solidification of metal

107.

The core in the centrifugal casting is made of

108.

In slush casting

(a)	Vacuum is applied to facilitate complete filling of casting
(b)	Consumable patterns are used
(c)	Plunger is used to force molten metal to fill up cavities
(d)	When a solid shell of sufficient thickness has formed, remaining liquid is poured out

109.

Ornamental objects, statues, toys etc. are cast by

110.

Investment casting is used for

(a)	Shapes which are made by difficulty using complex patterns in sand casting
(b)	Mass production
(c)	Shapes which are very complex and intricate and can't be cast by an other method
(d)	Vertical passage

Showing 101 to 110 out of 125 Questions