During normalizing process of steel, the specimen is heated
Answer: C
Normalising involves prolonged heating just above the critical temperature to produce globular form of carbine and then cooling in air.
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An expendable pattern is used in
Answer: D
Investment casting uses an expandable pattern, which is made of wax or of a plastic by moulding or rapid prototyping techniques. This pattern is made by injecting molten wax or plastic into a metal die in the shape of the pattern.
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Misrun is a casting defect which occurs due to
Answer: B
Two streams of liquid metal which are not hot enough to fuse properly result into a casting defect, known as Misrun/cold shut. It occurs due to insufficient fluidity of the molten metal.
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A jig is defined as a device which
Answer: A
No answer description available for this question.
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Which of the following statement is correct regarding grinding of high carbon steel?
Answer: D
No answer description available for this question.
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Which type of motor is not used in axis or spindle drives of CNC machine tools?
Answer: C
A spindle motor is a small, high precision, high reliability electric motor that is used to rotate the shaft or spindle used in machine tools for performing a wide range of tasks like drilling, grinding, milling etc. A stepper motor has not all these characteristic due to change of direction of rotation with time interval.
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What is the method of brazing used to join relatively small assemblies made from materials that either do not oxidize at the brazing temperature or can be protected from oxidation with a flux?
Answer: A
No answer description available for this question.
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The maximum possible draft in cold rolling of sheet increases with the
Answer: A
The main objective in rolling is to decrease the thickness of the metal.
The relation for the rolling is given by, F = µPr
Where; F = tangential frictional force
µ = Coefficient of friction
Pr= Normal force between the roll and work piece
Now, from the increase in µ the draft in cold rolling of sheet increases.
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A right hand tool on a lathe cuts most efficiently when it travels
Answer: B
No answer description available for this question.
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While current is shut down in the welding circuit, what kind of voltage exists between the output terminals of the welding machine?
Answer: B
Open air cut voltage is the voltage between the output terminals of the welding machine when no current is flowing in the welding circuit.
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