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Manufacturing and Production: Part 46
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Tool life questions

Ashish Futtan is teaching live on Unacademy Plus

Ashish Futtan
MTECH IIT Bombay|Quora Top Writer for GATE Mechanical 2019|Cracked IIT (ISM) Dhanbad,IIT DELHI|3 times GATE qualified| Singer|

U
Unacademy user
with increase in class levels ur way of explanation is
  1. manufacturing and production


  2. HELLO! I am ASHISH FUTTAN MTECH-IIT BOMBAY TOP STAR EDUCATOFR VERIFIED EDUCATOR CRACKED VARIOUS IITS 3 TIMES GATE QUALIFIED PUBLISHED MORE THAN 600 LESSONS


  3. IES - 1994, 2007 For increasing the material removal rate in turning, without any constraints, what is the right sequence to adjust the cutting parameters? 1. Speed 2. Feed 3. Depth of cut Select the correct answer using the code given below: (a) 1-2- 3 (b) 2- 3- 1 (c) 3-2-1 (d) 1-3- 2


  4. IES - 2008 What are the reasons for reduction of tool life in a machining operation? 1. Temperature rise of cutting edge 2. Chipping of tool edge due to mechanical impact 3. Gradual wears at tool point 4. Increase in feed of cut at constant cutting force Select the correct answer using the code given below: (a) 1, 2 and 3(b) 2, 3 and 4 (c) 1, 3 and 4(d) 1, 2 and 4


  5. lAS - 1995 Assertion (A): An increase in depth of cut shortens the tool life. Reason(R): Increases in depth of cut gives rise to relatively small increase in tool temperature. (a) Both A and R are individually true and R is the correct explanation of A (b) Both A and R are individually true but R is not the correct explanation of A (c) A is true but R is false (d) A is false but R is true


  6. IAS - 2003 The tool life curves for two tools A and B are shown in the figure and they follow the tool life equation VTn C. Consider the following statements: 1. Value of n for both the tools is same. 2. Value of C for both the tools is same. 3. Value of C for tool A will be greater than that for the tool B 4. Value of C for tool B will be greater than that for the tool A. Which of these statements is/are correct? (a) 1 and 3 (b) 1 and 4 (c) 2 only (d) 4 only Gutting speed


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