List of top Manufacturing Processes II Questions asked in GATE PI

A CNC milling operation is carried out by moving the tool from the point A to point B in anti-clockwise direction to cut a slot of quarter circle with center at C, as shown. The coordinates of the points A and B are (0,0) and (10,10), respectively. All dimensions are in mm. If the feed rate at point P along x-axis is 6 mm/min, then the feed rate (in mm/min) at point P along y-axis is ______ . (Rounded off to 1 decimal place)

An offset slider-crank mechanism is shown in the figure. If the length l = 10 cm, then the stroke length (in cm) of the slider is _____ . (Rounded off to 1 decimal place)

The following data are given in relation to turning operation of a cylindrical workpiece.
Diameter of the workpiece = 160 mm, length of the workpiece = 190 mm, cutting velocity = 80 m/min, and tool feed = 0.2 mm/rev.
Assuming the approach and the overrun of the tool to be 5 mm each, the machining time (in minutes) is _____ . (Answer in integer)

During orthogonal turning, the cutting speed, feed and depth of cut are set as 2 m/s, 0.2 mm/rev and 2 mm, respectively. The specific cutting energy (neglecting the effect of feed force on the total cutting power) is 2 J/mm³. The main cutting force (in N) is _____ . (Answer in integer)

Electro-chemical machining is performed on a flat copper workpiece. If the material removal rate is \(2\ cm^3/min\) throughout the process, then the required current (in A) is ______ . (Rounded off to 1 decimal place)
Copper properties: Melting point = \(1085 °C\), density = \(9\ g/cm^3\), gram atomic weight = \(63\), and valency of dissolution = \(2\)
Faraday's constant = \(96500 C\)
Stefan-Boltzmann constant = \(5.67 \times 10^{-8} W/m^2-K^4\)

Choose the item(s) which is/are required to make an eccentric hole on a disc, as shown, using a lathe.