The binder commonly used in making oil sand, is
Clay type binder
Organic type binder
Inorganic type binder
Any one of these
Correct Answer :
B. Organic type binder
Related Questions
In electric resistance welding, voltage required for heating is
1 to 5 volts
6 to 10 volts
11 to 20 volts
50 to 100 volts
When a pattern is made in three parts, the top part, is known as a
Drag
Cheek
Cope
None of these
The centrifugal casting method, is used for casting articles of
Symmetrical shape about vertical axis
Symmetrical shape about horizontal axis
Irregular shape
Nonferrous metal only
In a four high rolling mill, the diameter of backing up rolls is ________ the diameter of working rolls.
Equal to
Smaller than
Larger than
None of these
In a bilateral system of tolerance, the tolerance is allowed on
One side of the actual size
One side of the nominal size
Both sides of the actual size
Both sides of the nominal size
The directional solidification in casting can be improved by using
Chills and chaplets
Chills and padding
Chaplets and padding
Chills, chaplets and padding
Thermit welding is often used in
Replacing broken gear teeth
Repairing broken shears
Joining rails, truck frames and locomotive frames etc.
All of the above
A moving mandrel is used in
Wire drawing
Tube drawing
Metal cutting
Forging
In a gas welding of mild steel using an oxyacetylene flame, the total amount of acetylene consumed is 10 litres. The oxygen consumption from the cylinder is
5 litres
10 litres
15 litres
20 litres
A diamond pointed chisel is used for cutting
Flat surfaces
Grooves
Keyways
V-shaped grooves
According to Indian standards, the total numbers of tolerance grades are
8
12
18
20
Thread rolling is restricted to
Ferrous materials
Ductile materials
Hard materials
None of these
The maximum flame temperature occurs
At the outer cone
At the inner cone
Between the outer and inner cone
At the torch tip
In a _________, the molten metal is poured and allowed to solidify while the mould is revolving.
Die casting method
Slush casting method
Permanent mould casting method
Centrifugal casting method
During cold working process
Grain structure is distorted
Strength and hardness of metal increases
Close dimensional tolerance can be maintained
All of the above
Rotary swaging
Is extensively used for making bolts and rivets
Is used for reducing the diameters of round bars and a tube by rotating dies which open and close rapidly on the work
Is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface
Consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part
The width of slot cut by a hacksaw blade is _______ the width of the blade.
Equal to
Less than
Greater than
None of these
To prevent the body of the blade from jamming in the saw cut, the teeth of blade are
Strengthened
Sharpened
Set
All of these
In order to deliver molten metal from pouring basin to gate, a ________ is used.
Riser
Sprue
Core
None of these
In a four high rolling mill, there are four rolls out of which
One is working roll and three are backing up rolls
Two are working rolls and two are backing up rolls
Three are working rolls and one is backing up roll
All of the four are working rolls
A file with 20 teeth in 25 mm is called
Rough file
Bastard file
Second cut file
Smooth file
Shift is a casting defect which
Results in a mismatching of the top and bottom parts of a casting
Results in general enlargement of a casting
Occurs near the ingates as rough lumps on the surface of a casting
Occurs as sand patches on the upper surface of a casting
When the dimension is expressed as 20 -0.025 ⁺⁰⁰³⁵, then the basic size is
20 mm
20.035 mm
20.025 mm
19.975 mm
Aluminium is the best material for making patterns because it is
Light in weight
Easy to work
Corrosion resistant
All of these
Which of the following methods can be used for manufacturing 2 metre long seamless metallic tubes?
Drawing
Extrusion
Rolling
Extrusion and rolling
In spot welding, the distance between the nearest edge of the plate and centre of weld should be equal to
d
1.5d
3d
6d
A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct?
The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in opposite direction
The upper and bottom rolls rotate in the same direction whereas the middle roll rotates in opposite direction
The bottom and middle roll rotate in the same direction
Any one of the above
In forehand welding, the angle between the welding torch and the work is ________ as compared to backhand welding.
Same
Less
More
None of these
The minimum size of a bloom is
5 cm × 5 cm
10 cm × 10 cm
15 cm × 15 cm
20 cm × 20 cm
In order to cut mild steel, the cutting angle of chisel should be
30°
45°
50°
60°