MCQs of Foundary Technology (Manufacturing Technology - 3151912)

Showing 91 to 100 out of 125 Questions

91.

In permanent mould casting, the molten metal is poured

(a)	under external pressure
(b)	under gravity
(c)	partially under gravity and partially under external pressure
(d)	none of the above

92.

In permanent moulds, castings are capable of maintaining clearance of the order of

93.

Which of the following is not true for permanent mould casting?

(a)	They are superior in hardness
(b)	$can be used for pressure tight vessel (upto 15 Kgf / {cm}^{2})$
(c)	Can be used for large size castings
(d)	Can be used for large size castings

94.

In slush casting

95.

In which of the following types of castings, the molten metal is allowed to solidify upto the required thickness?

(a)	Permanent mould casting
(b)	Semi permanent mould casting
(c)	Slush casting
(d)	Die casting

96.

Ornaments, toys and statue of low melting alloys are made by which of the following method?

(a)	Permanent mould casting
(b)	Semi permanent mould casting
(c)	Slush casting
(d)	Die casting

97.

In hot chamber die casting machine

(a)	melting unit is an integral part of machine
(b)	It is used for high melting (above 500°C) alloys
(c)	No pressure is used for forcing the metal inside the die
(d)	None of the above

98.

In die casting, which of the following keeps the two halves of die in proper alignment?

99.

In cold chamber die casting machine

(a)	In cold chamber die casting machine
(b)	melting chamber is an external part of machine
(c)	melting chamber can be placed anywhere
(d)	low pressure is required to force the molten metal into the die casting

100.

The chief advantage of die casting is

(a)	Possibility of incorporating thick sections in small castings
(b)	Casting of inserts is possible
(c)	Wide tolerances are possible
(d)	High production rates are possible

Showing 91 to 100 out of 125 Questions