Mechanical Engineering Exam  >  Mechanical Engineering Questions  >  In a single pass drilling operation, a throug... Start Learning for Free
In a single pass drilling operation, a through hole of 15 mm diameter is to be drilled in a steel plate of 50 mm thickness. Drill spindle speed is 500 rpm, feed is 0.2 mm/rev and drill point angle is 118°, Assuming 2 mm clearance at approach and exit, the total drill time (in seconds) is
[ME 2012]
  • a)
    35.1
  • b)
    32.4
  • c)
    31.2
  • d)
    30,1
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
In a single pass drilling operation, a through hole of 15 mm diameter ...

N = 500 rpm; f = 0.2 mm/rev
Tc = 0.585 min or 35.1 seconds
View all questions of this test
Most Upvoted Answer
In a single pass drilling operation, a through hole of 15 mm diameter ...
Degrees. The material being drilled is mild steel with a hardness of 200 HB. Determine the cutting speed and the material removal rate.

To determine the cutting speed, we can use the formula:

Cutting Speed (V) = π * Drill Diameter * Spindle Speed

First, let's convert the drill diameter from millimeters to meters:
Drill Diameter = 15 mm = 0.015 m

Now we can calculate the cutting speed:
V = π * 0.015 m * 500 rpm

To convert rpm to m/s, we need to multiply by the circumference of the drill:
Circumference = 2 * π * Radius
Radius = Drill Diameter / 2 = 0.015 m / 2 = 0.0075 m

Circumference = 2 * π * 0.0075 m

Now we can calculate the cutting speed:
V = π * 0.015 m * 500 rpm * (2 * π * 0.0075 m)

Cutting Speed (V) = 0.15 * π^2 * 0.0075 m * 500 rpm

Now we can solve for the cutting speed:
V ≈ 5.89 m/s

The cutting speed is approximately 5.89 m/s.

To determine the material removal rate, we can use the formula:

Material Removal Rate (MRR) = Feed * Cutting Speed * Depth of Cut

The depth of cut is equal to the plate thickness, which is 50 mm. Let's convert it to meters:
Depth of Cut = 50 mm = 0.05 m

Now we can calculate the material removal rate:
MRR = 0.2 mm/rev * 5.89 m/s * 0.05 m

Material Removal Rate (MRR) = 0.0589 m^3/s

The material removal rate is approximately 0.0589 m^3/s.
Attention Mechanical Engineering Students!
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.
Explore Courses for Mechanical Engineering exam

Similar Mechanical Engineering Doubts

Top Courses for Mechanical Engineering

In a single pass drilling operation, a through hole of 15 mm diameter is to be drilled in a steel plate of 50 mm thickness. Drill spindle speed is 500 rpm, feed is 0.2 mm/rev and drill point angle is 118°, Assuming 2 mm clearance at approach and exit, the total drill time (in seconds) is[ME 2012]a)35.1b)32.4c)31.2d)30,1Correct answer is option 'A'. Can you explain this answer?
Question Description
In a single pass drilling operation, a through hole of 15 mm diameter is to be drilled in a steel plate of 50 mm thickness. Drill spindle speed is 500 rpm, feed is 0.2 mm/rev and drill point angle is 118°, Assuming 2 mm clearance at approach and exit, the total drill time (in seconds) is[ME 2012]a)35.1b)32.4c)31.2d)30,1Correct answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about In a single pass drilling operation, a through hole of 15 mm diameter is to be drilled in a steel plate of 50 mm thickness. Drill spindle speed is 500 rpm, feed is 0.2 mm/rev and drill point angle is 118°, Assuming 2 mm clearance at approach and exit, the total drill time (in seconds) is[ME 2012]a)35.1b)32.4c)31.2d)30,1Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a single pass drilling operation, a through hole of 15 mm diameter is to be drilled in a steel plate of 50 mm thickness. Drill spindle speed is 500 rpm, feed is 0.2 mm/rev and drill point angle is 118°, Assuming 2 mm clearance at approach and exit, the total drill time (in seconds) is[ME 2012]a)35.1b)32.4c)31.2d)30,1Correct answer is option 'A'. Can you explain this answer?.
Solutions for In a single pass drilling operation, a through hole of 15 mm diameter is to be drilled in a steel plate of 50 mm thickness. Drill spindle speed is 500 rpm, feed is 0.2 mm/rev and drill point angle is 118°, Assuming 2 mm clearance at approach and exit, the total drill time (in seconds) is[ME 2012]a)35.1b)32.4c)31.2d)30,1Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of In a single pass drilling operation, a through hole of 15 mm diameter is to be drilled in a steel plate of 50 mm thickness. Drill spindle speed is 500 rpm, feed is 0.2 mm/rev and drill point angle is 118°, Assuming 2 mm clearance at approach and exit, the total drill time (in seconds) is[ME 2012]a)35.1b)32.4c)31.2d)30,1Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of In a single pass drilling operation, a through hole of 15 mm diameter is to be drilled in a steel plate of 50 mm thickness. Drill spindle speed is 500 rpm, feed is 0.2 mm/rev and drill point angle is 118°, Assuming 2 mm clearance at approach and exit, the total drill time (in seconds) is[ME 2012]a)35.1b)32.4c)31.2d)30,1Correct answer is option 'A'. Can you explain this answer?, a detailed solution for In a single pass drilling operation, a through hole of 15 mm diameter is to be drilled in a steel plate of 50 mm thickness. Drill spindle speed is 500 rpm, feed is 0.2 mm/rev and drill point angle is 118°, Assuming 2 mm clearance at approach and exit, the total drill time (in seconds) is[ME 2012]a)35.1b)32.4c)31.2d)30,1Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of In a single pass drilling operation, a through hole of 15 mm diameter is to be drilled in a steel plate of 50 mm thickness. Drill spindle speed is 500 rpm, feed is 0.2 mm/rev and drill point angle is 118°, Assuming 2 mm clearance at approach and exit, the total drill time (in seconds) is[ME 2012]a)35.1b)32.4c)31.2d)30,1Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice In a single pass drilling operation, a through hole of 15 mm diameter is to be drilled in a steel plate of 50 mm thickness. Drill spindle speed is 500 rpm, feed is 0.2 mm/rev and drill point angle is 118°, Assuming 2 mm clearance at approach and exit, the total drill time (in seconds) is[ME 2012]a)35.1b)32.4c)31.2d)30,1Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
Explore Courses for Mechanical Engineering exam

Top Courses for Mechanical Engineering

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev