Raw material for all iron and steel
product is ________.
Which of the following is non-chip
removal process?
Match plate pattern is used in
Facing sand used in foundry work
comprises of
Themould for casting ferrous material in continuous casting process is made of________.
A. low carbon steel
B. medium carbon steel
C. high carbon steel
D. copper
Ornaments are cast by ________.
The hot chamber die casting method is
used to cast
Fluidity is greatly influenced by
Which of the following is not a
casting process?
A sprue hole is ________ .
Slick in a foundry shop is used to ________
.
Which of the following processes would
produce best components?
Hot tear refers to ________ .
For steel castings, the following type
of sand is better ________ .
The purpose of chaplets is :
The process of making hollow castings
of desired thickness by permanent mould without the use of cores is known as-
One direction solidification in
casting can be improved by using-
Which of the following material is
added to base sand to impart bonding strength-
The process of removing unwanted
material from the casting is called
A casting defect which results in
general enlargement of a casting is known as
An important factor to be taken into account while designing a core
print is-
Non uniform ramming of moulding sand
may lead to the following casting defect :
To improve the surface finish of
casting, the following additive is used in the moulding sand
Cereals are added to the moulding sand
to improve the following:
Plastic toys are usually produced by using :
The shape and size of sand grains affects
the following property:
The binder in case of synthetic sand
used for moulding is :
Metal patterns are used for :
Permeability is poor for :
Permeability of a foundry sand is:
Cupola is best suited for melting
The process of pouring molten metal in the cavity of a metallic mould by gravity is known as :
The vertical passage for bringing
molten metal to mould cavity is called :
Which of the following is not a
foundry tool?
Hot tears are the result of which of
the following?
Shrinkage allowances made by :
Cope in foundry practice refers to:
Which of the following is not a
casting defect?
In order to facilitate the withdrawal
of pattern :
Surfaces to be machined are marked on the pattern by the following colour:
Which of the following is not a
casting process?
The taper provided on pattern for its easy and clean withdrawal from the mould is called
In order to ram the sand soften on the
pattern face and harder at the back of the mould, which of the following types
of moulding machines is used?
In sand moulding, the bottom-most part of the flask is called
The main advantage of shell moulding
is that :
Uniform sand hardness is obtained throughout the mould by which of the following moulding machines?
The chief advantage of die casting
is
The purpose of chaplets is :
If compression is achieved by trapping a refrigerant vapour in an
enclosed space and then reducing its volume, then it is called :
यदि एक बंद स्थान में रेफ्रिजरेंट वाष्प को फंसाकर और फिर उसकी मात्रा को कम करके संपीड़न प्राप्त किया जाता है, तो इसे कहा जाता है:
In a triple
fluid vapour absorption refrigeration system, hydrogen gas is used to :
ट्रिपल द्रव वाष्प अवशोषण प्रशीतन प्रणाली में, हाइड्रोजन गैस का उपयोग किया जाता है: