The process of decreasing the cross-section of a bar and increasing its length, is called
Drawing down
Upsetting
Spinning
Peening
Correct Answer :
A. Drawing down
Related Questions
The brass and bronze are welded by _________ flame.
Neutral
Oxidising
Carburising
All of these
Which of the following statement is wrong?
The angular clearance on dies varies from 0.5° to 1°
In drawing operation, the metal flows due to plasticity
In press operation, the size of the pierced hole is independent of the size of punch
None of the above
The temperature at which the new grains are formed in the metal is called
Lower critical temperature
Upper critical temperature
Eutectic temperature
Recrystallisation temperature
The electrodes used in spot welding have a tip of
Stainless steel
Aluminium
Copper
Brass
Acetylene gas is stored in cylinders in
Solid form
Gaseous form
Liquid form
Any one of these
The operation of bending a sheet of metal along a curved axis, is known as
Plunging
Notching
Slitting
Forming
When filing soft metals, the file teeth are clogged with minute particles of metal. The file should be cleaned by
Washing it with water
Rubbing on wood
Washing it with dilute acid
Using file card
The edge of a steel plate cut by oxygen cutting will get hardened when the carbon content is
Less than 0.1 percent
Less than 0.3 percent
More than 0.3 percent
Anywhere between 0.1 to 1 percent
The process of increasing the cross-section of a bar at the expense of its length, is called
Drawing down
Upsetting
Spinning
Peening
Sand wash is a casting defect which
Results in a mismatching of the top and bottom parts of a casting
Results in general enlargement of the 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
The property of sand due to which the sand grains stick together is called
Collapsibility
Permeability
Cohesiveness
Adhesiveness
In forehand welding, the weld is made
From left to right
From right to left
First from left to right and then from right to left
Either from left to right or from right to left
In a simple die
Two or more operations are performed simultaneously at the single stroke of the ram
Two or more cutting operations are performed at one station of the press in every stroke of the ram
Both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram
None of the above
The machining allowance provided on patterns depends upon
Type of casting metal
Size and shape of casting
Method of casting used
All 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
The instrument used to measure external and internal diameter of shafts, thickness of parts and depth of holes, is
Outside micrometer
Inside micrometer
Depth gauge micrometer
Vernier caliper
During drawing operation, the states of stress in cup would include
Compressive stress in the flange
Tensile stress in the wall
Both (A) and (B)
None of these
For welding plates of thickness less than 5 mm, its edges
Do not require bevelling
Should be bevelled to a single-V or U-groove
Should have a double-V or U-groove on one side
Should have a double-V or U-groove on both sides
A basic hole is one whose
Lower deviation is zero
Upper deviation is zero
Lower and upper deviations are zero
None of these
When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as
Die casting method
Slush casting method
Permanent mould casting method
Centrifugal casting method
A mortise gauge is a
Striking tool
Planing tool
Boring tool
Marking tool
A basic shaft is one whose
Lower deviation is zero
Upper deviation is zero
Lower and upper deviations are zero
None of these
For gas welding, the pressure desired at the welding torch for acetylene is
7 to 103 kN/m²
70 to 280 kN/m²
280 to 560 kN/m²
560 to 840 kN/m²
The operation of cutting a sheet of metal in a straight line along the length, is known as
Plunging
Notching
Slitting
Forming
The cold chisels are made by
Drawing
Rolling
Piercing
Forging
The tolerance produced by shell moulding process of casting is
+0.05 mm
±0.2 mm
+0.5 mm
±1 mm
In submerged arc welding, an arc is produced between a
Carbon electrode and the work
Metal electrode and the work
Bare metal electrode and the work
Two tungsten electrodes and the work
In a compound die
Only one operation is performed at each stroke of the ram
Two or more operations are performed simultaneously at the single stroke of the ram
Two or more cutting operations are performed at one station of the press in every stroke of the ram
Both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram
In TIG arc welding, the welding zone is shielded by an atmosphere of
Helium gas
Argon gas
Either (A) or (B)
None of these
According to Indian standards, the total numbers of tolerance grades are
8
12
18
20