A three high rolling mill consists of three rolls placed one above the other and the upper and bottom rolls rotate in the same direction whereas the middle roll rotates in opposite direction.
9) A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct?
Answer is:
The upper and bottom rolls rotate in the same direction whereas the middle roll rotate in opposite direction.
Explanation:
Related Workshop Technology MCQ with Answers
Answer is:
two are working rolls and two are backing up rolls
Explanation:
In a four high rolling mill, there are four rolls out of which Two are working rolls and two are backing up rolls.
Answer is:
larger than
Explanation:
In a four high rolling mill, the diameter of backing up rolls is Larger than the diameter of working rolls.
Answer is:
hot spinning
Explanation:
The parts of circular cross-section which are symmetrical about the axis of rotation are made by Hot spinning.
Answer is:
compressive stress in the flange and tensile stress in the wall
Explanation:
The stress in the flange region during the deep drawing process is a combination of radial tensile drawing stress and a tangential compressive stress.
The blank-holder at the top of the workpiece exerts a compressive force at the upper surface of the blank during the drawing process.