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ISRO ME 2019 Manufacturing Quiz 6
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Question 1
Using direct extrusion process, a round billet of 150 mm length and 60 mm diameter is extruded. Considering an ideal deformation process (no friction and no redundant work) with extension ratio 4 and average flow stress of material 250 MPa, the ram will experience a pressure of
Question 2
In a 2-D CAD package, Clockwise circular arc specified from P 1 (15, 10) to P2 (10, 15) have its centre at (15, 15). The radius of arc is
Question 3
In USM ( ultrasonic machining process) with increase in abrasive particle size the material removal rate __________
Question 4
Enlarging an existing circular hole with a rotating single point tool is called __________.
Question 5
Match the following and select the correct answer using the codes given below
Question 6
In ECM, the material removal is due to
Question 7
A bar of 10 mm is feed between two rolls. The velocity with which the bar is delivered to the Point between the rolls is
52.5 mm/sec. The velocity of the rolls is 50 mm/sec, then percentage of forward slip is_______.
52.5 mm/sec. The velocity of the rolls is 50 mm/sec, then percentage of forward slip is_______.
Question 8
In an orthogonal cutting operation, the depth of cut is 0.30 mm and the chip thickness is 0.75 mm. If the cutting speed is 3 m/s, calculate the chip velocity _______.
Question 9
Match the following
Question 10
In a tool wear study experiment, it is found that doubling cutting speed reduces the tool life to 1/8th of the original. The Taylor’s tool life index is
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Dec 9ESE & GATE ME
