Manufacturing Process Technology I & II Assignment 03 Answers | January 2022 | NPTEL | WEEK 03 | The Today Blog

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Want to Know the Answers to NPTEL Manufacturing Process Technology I & II Assignment 03? This article will tell you the answer to the National Programme on Technology Enhanced Learning (NPTEL) Course “Manufacturing Process Technology I & II”. So read the complete article carefully.

About the Course: Manufacturing Process Technology I & II

This is an introductory level course in Manufacturing Systems Technology and management. For most enterprises, the long-term goal is to stay in business, grow and make profits. This is particularly true for manufacturing enterprises, which must understand the dynamic changes that are taking place in the business environment and are flexible enough to change at every level.

This course is an introductory course for engineering professionals who would like to take up careers in manufacturing and also for professionals who are already in manufacturing careers and would like to see the technological changes that the manufacturing paradigm has witnessed in the last 3 decades.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of the average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF THE AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

The certificate will have your name, photograph, and score in the final exam with the breakup. It will have the logos of NPTEL and IIT Roorkee. It will be e-verifiable at nptel.ac.in/noc.

Manufacturing Process Technology I & II Assignment 03 Answers

Question 01 of 10

Hot tearing in castings, can occur due to ______________which gets developed during solidification.

A. Tensile stresses

B. Compressive stresses

C. Both tensile and compressive stresses

D. None of these

A. Tensile stresses

Question 02 of 10

What are major factors which determine the time at which one would remove the casting from the mould in a sand-casting process without any defect.

A. Thermal conductivity of the mould-material and of the cast metal.

B. Thickness of the casting.

C. Temperature at which the metal is being poured.

D. All of the above.

D. All of the above.

Question 03 of 10

Cast iron is easy to cast than steels because of _________.

A. melting point of steel is lower than cast iron

B. melting point of cast iron is lower than steel

C. melting point of steel is higher than cast iron

D. melting point of cast iron is higher than steel

B. melting point of cast iron is lower than steel

Manufacturing Process Technology I & II Assignment 03 Answers

Question 04 of 10

Shrinkage allowances on patterns are provide to take care corrections for the shrinkage that occurs upon____________ and _______________ while cooling to room temperature.

A. contraction, solidification of the casting

B. solidification of the casting, expansion

C. solidification of the casting, contraction

D. expansion, solidification of the casting

C. solidification of the casting, contraction

Question 05 of 10

A round shape casting has 0.3 m in diameter and 0.5 m length. The other casting of the similar metal is elliptical in cross section, with a major-to minor axis ratio of 3, and has the same length and cross-sectional area as the round casting. Both castings are cast under the similar conditions. What will be the solidification time ratio of round and ellipse shape castings?

A. 1.25

B. 2.00

C. 2.67

D. 3.15

B. 2.00

Question 06 of 10

Generally, Sprue designs are found in tapered shape instead of straight because taper shape provide____________________.

A. better support to the mould

B. maintain the pressure balance

C. prevent the erosion of mould sand

D. allow easy flow of molten metal

B. maintain the pressure balance

Manufacturing Process Technology I & II Assignment 03 Answers

Question 07 of 10

In a casting process, if aluminium is being poured into a sand mould. The molten metal level in the pouring basin is 0.254 m above the molten metal level in the mould, assume the runner is circular with a 0.010 m. diameter. What is the velocity and rate of the flow of the metal into the mould?

A. 1.26 m/sec, 0.013 m^3/sec

B. 2.23 m/sec, 0.022 m^3/sec

C. 3.33 m/sec, 0.037 m^3/sec

D. 4.62 m/sec, 0.054 m^3/sec

B. 2.23 m/sec, 0.022 m^3/sec

Question 08 of 10

Splashing of the molten metal can be avoided in ______________design.

A. Vertical gating

B. Horizontal gating

C. Bottom gating

D. Inclined gating

C. Bottom gating

Question 09 of 10

Which of the following factor/s is responsible for the direction of crystal growth in an alloy during solidification?

A. Ambient temperature.

B. Ambient pressure.

C. Thermal gradient within the mould.

D. Ambient temperature and pressure.

C. Thermal gradient within the mould.

Question 10 of 10

Generally, the heavy regions of parts are kept in ______________.

A. Drag part of the mould in sand casting

B. Cope part of the mould in sand casting

C. Special chamber of the mould in sand casting

D. None of these

A. Drag part of the mould in sand casting

That’s All Guys! Hope you Like the Article.

That It Guys, in this article I have told you about the Answers to Manufacturing Process Technology I & II Assignment 03.

Disclaimer: We do not claim 100% surety of answers, these answers are based on our sole knowledge, and by posting these answers we are just trying to help students, so we urge do your assignment on your own.

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