Straight polarity
Reversed polarity
Both (A) and (B)
None of these
B. Reversed polarity
3000°C to 4000°C
4000°C to 5000°C
5000°C to 6000°C
6000°C to 7000°C
Equal to
Less than
Greater than
None of these
1800°C
2100°C
2400°C
3200°C
Equal volumes of oxygen and acetylene
More volume of oxygen and less volume of acetylene
More volume of acetylene and less volume of oxygen
None of the above
Black colour
White colour
Maroon colour
Yellow colour
Neutral
Oxidising
Carburising
None of these
Equal to minor diameter of the thread
Equal to pitch diameter of the thread
A little larger than the minor diameter of the thread
A little larger than the pitch diameter of the thread
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
Same
Less
More
None of these
Steel
Cast iron
Copper
All of these
Riser
Sprue
Core
None of these
Cross filing
Draw filing
Pull and push filing
None of these
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
Rectangular
Square
Hexagonal
Octagonal
Drawing
Squeezing
Coining
Planishing
Simple die
Progressive die
Compound die
Combination die
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
Red colour
Yellow colour
Black colour
Blue colour
Shift
Sand wash
Swell
Scab
30°-40°
40°-50°
50°-60°
60°-70°
Punch
Die
Half on the punch and half on the die
Either on punch or die depending upon designer's choice
Is a two man saw
Is used for cutting along the grains of wood
Has a narrow blade with two wooden handles
All of the above
Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould
Ram the sand harder at the back of the mould and softer on the pattern face
Produce uniform packing of sand in the mould
Give uniform sand hardness throughout the mould
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
Actual deviation
Upper deviation
Lower deviation
Fundamental deviation
Hot piercing
Extrusion
Cold peening
Cold heading
Forward stroke
Return stroke
Both forward and return strokes
Cutting depends upon the direction of force
Tensile strength
Yield strength
Hardness
All of these
Towards right
Towards left
Alternately towards right and left and every third or fourth left straight
May be bent in any direction
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