MCQs of Foundary Technology (Manufacturing Technology - 3151912)

Showing 111 to 120 out of 125 Questions

111.

Water pipes of large length and diameter are made by

(a)	Semi-centrifugal casting
(b)	Continuous casting
(c)	Sand casting
(d)	Electric resistance welding

112.

In centrifugal casting, cores are made of

113.

Semi-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 heavy cast iron mould to act as chill

114.

In die 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

115.

The hot chamber die casting method is used to cast

116.

In hot chamber method of die casting

(a)	Only low melting point metals can be cast
(b)	High melting point metals can be cast
(c)	High melting point and low melting point metals can be cast
(d)	Die is kept cold by circulating water

117.

A large intricate heavy casting weighing in tons is to be cast. The most appropriate moulding process would be

118.

In cold chamber method of die casting

(a)	Only low melting point metals can be cast
(b)	High melting point metals can be cast
(c)	Die is kept hot by electrical heating
(d)	Die is kept cold by circulating water

119.

Which of the following is true for die used in die casting machine?

(a)	One part of die is stationery and other is moveable
(b)	Both part of die are stationery
(c)	Both part of die are moveable
(d)	None of the above

120.

Which of the following is not a casting defect?

Showing 111 to 120 out of 125 Questions