WorksheetsTEACHER ASSESSMENT 1 JHARKHAND RAI UNIVERSITY WORKSHOP PRACTICE
Total questions: 20
Worksheet time: 14mins
One (1) of the common hazards in the workplace is:
Relaxing Space
Good Housekeeping
Working at height
Potions Making
Which of the following is true for sand castings?
They cannot be used for pressure tight vessels
They are stronger than wrought products
They have lower density and poor strength
They have poor ductility
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
2. Green sand molding cannot be used for _________ moulds.
a) Simple
b) Small
c) Medium
d) Complex
3.Green sand is widely used for hand molding purposes
a) True
b) False
_____________ is used as a pattern material for the easy handling of the equipment.
a) Wood
b) Charcoal
c) Steel
d) Lead
_________ Patterns are useful for large castings in the foundry.
a) Steel
b) Lead alloys
c) Aluminium alloys
d) Wood
The patterns which are made in two or more pieces are called as
a. solid patters
b. split patterns
c. loose piece patterns
d. none of the above
The hot chamber process is used for die-casting metals that melt at
low temperature
high temperature
Die Casting permanent casting
True
False
Hot working process is the plastic deformation of metal which is carried out
at temperature below the recrystallisation temperature
at temperature above the recrystallisation temperature
at temperature equals to boiling point of water
none of the above
Mechanical working processes are performed on metals
to achieve optimum mechanical properties in the metal
to improve the mechanical strength of the metal
to make metal dense
All of the above
Castings are usually
costlier than forgings
cheaper than forgings
at the same rate as forging for similar metal
None of the above
