WorksheetsChapter 7
Total questions: 9
Worksheet time: 14mins
Which of the following is true about riser?
It permits the molten metal to rise above the highest point in the casting.
Filling up of mould cavity can be visually checked from it.
The casting solidifies directionally towards the riser
According to their use, which of the following is not a type of moulding sand?
Green Sand
Dry Sand
Loam Sand
Wet Sand
The function of cores in casting is to
form extended parts
form internal cavities
used for directional solidification
none of the above
In permanent mould casting, the molten metal is poured
under external pressure
under gravity
partially under gravity and partially under external
pressure
none of the above
Which of the following is not true for permanent mould casting?
They are superior in hardness
can be used for pressure tight vessel (upto 15 Kgf/cm2)
can be used for large size castings
not suitable for alloys of high temperature
Dental castings and turbine blades are produced by
Centrifugal casting
Investment casting
Die casting
Sand casting
The bottom part of the casting mold is called:
Cope
Drag
Flask
Riser
4._____________ is used as a pattern material for the easy handling of the equipment.
a) Wood
b) Charcoal
c) Steel
d) Lead
5._________ Patterns are useful for large castings in the foundry.
a) Steel
b) Lead alloys
c) Aluminium alloys
d) Wood
