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ISRO ME Quiz 2: Manufacturing

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Question 1

In orthogonal cutting the depth of cut is 0.5 mm at a cutting speed of 3 m/s. If the chip thickness is 0.75 mm, the Chip velocity is _____.

Question 2

A cup of 10 cm height and 5 cm diameter is to be made from a sheet metal of 2 mm thickness. The number of deductions necessary is _____.

Question 3

An ideal sprue-basin system has been modelled in the laboratories as shown. Consider the sprue design as parabolic when the vertex of this parabola passes through point A. The mould cavity is of dimension 100 cm × 100 cm × 25 cm. The mould cavity is getting filled in 225.7 sec. For how much values of h_c the above condition will be satisfied ?

Question 4

Two steel sheet of 1 mm thick are resistance welded in a lap joint with a current of 10000 A for 0.1 sec. The effective resistance of joint can be taken as 100 μΩ The joint can be considered as cylinder diameter 5 mm and 1.5 mm height density of steel = 0.00786 g/mm³. Find the heat lost to surroundings is ______. (if the heat required to melt steel is 10 J/mm³ )

Question 5

A cylindrical billet of 50 mm diameter and 100 mm length is reduced by backward extrusion to a 20 mm diameter. The true strain is

Question 6

A shaft has a dimension $Description: E:\Gate\SSC JE Mechanical Part 1\Made Easy Questions\09_Manufacturing-Engg_BLok1_files\image019.png$ the ratio of fundamental deviation to tolerance is ________.

Question 7

A brass billet is to be extruded from its initial diameter of 100 mm to a final diameter of 50 mm. The working temperature is 690 °C and extrusion constant is 150 MPa. The force required for extrusion is______.

Question 8

With a solidification factor of 0.97 × 10⁶ s/m², the solidification time (in seconds) for a spherical casting of 200 mm diameter is ________.

Question 9

A resistance-capacitance relaxation circuit is used in an electrical discharge machining process. The discharge voltage is 100 V. At a spark cycle time of 25 µs, the average Power input required is 1 kW. The capacitance (in µF) in the circuit is

Question 10

Match the correct combination for following metal working processes
$Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE ME 18-Mar\GATE-ME-2007_files\image126.png$

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ESE & GATE ME Manufacturing & Engg materials

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