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Manufacturing Quiz 2

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Question 1

A built-up-edge is Moderate while machining

Question 2

A cast-iron work-piece was machined along its length on a Shaper machine, The dimensions of work-piece is length 150 mm, width 50 mm, and height 20 mm. If the cutting force required is 1000 N, determine the power consumed per stroke if the operation is carried at 50 strokes/min.

Question 3

A metric thread of pitch 3mm and diameter 30mm, inspected for its pitch diameter using 2- wire method. The diameter of best size wire (in mm) is______.

Question 4

Which of the following methods are gear generating processes?
1. Gear shaping
2. Gear hobbing
3. Gear milling
Select the correct answer using the code given below:

Question 5

Resistance spot welding is performed on two plates of 1.5 mm thickness with 6 mm diameter electrode, using 15000 A current for a time duration of 0.25 seconds. Assuming the interface resistance to be 0.0001Ω, the heat generated( W-sec) to form the weld is

Question 6

List 1 shows the accessories employed in Lathe machine and List 2 shows their use. Match List 1 with List 2

List 1:

1) Collets

2) Face plate

3) Dog clutch

4) Mandrel

List 2:

P) holding thin and hollow workpiece

Q) drive workpiece when it is held between two centres

R) holding irregular shapes

S) holding semi finished and finished parts

Question 7

A 0.9 m long plate is welded by manual metal arc welding process using welding current of 150A, arc voltage of 20V and welding speed of 5 mm/s. If the process efficiency is 0.8 and surface resistance is 36 micro-ohm, the heat input
(in J/mm) will be____?

Question 8

Given that the peripheral speed of the grinding wheel of 100 mm diameter for cylindrical grinding of a steel workpiece is 30 m/s, what will be the estimated rotational speed of the grinding wheel in revolution per minute (rpm)?

Question 9

A milling cutter having 10 teeth is rotating 100 rpm. The work piece feed is set at 40 mm/min. The fed per tooth is

Question 10

The velocity of the steel at the bottom of the sprue if the sprue height is 50 cm will be? The frictional and other losses are 22%.

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ESE & GATE ME Manufacturing & Engg materials

May 11ESE & GATE ME