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MRW 002 Solved Assignment 2022-23


MRW 002 Solved Assignment 2022-23


MRW 002 Solved Assignment 2022-23 : All assignments are in PDF format which would be send on email/WhatsApp (9958676204) just after payment.

Course Code : MRW 002

Last Date of Submission :May 15, 2022

Weightage : 30%

Maximum Marks : 100

Note : All questions are compulsory and carry equal marks. This assignment is based on all Blocks of Computer Aided Process Planning.

Q.1 Describe the mechanism of heat transfer through conduction. Also discuss the Fourier’s law of heat conduction.

Q.2 (a) The heat flow rate through a wood board with a 5cm thickness is 500 W/m2 . Temperature difference along the direction of flow of heat between the faces of the wood board is 55 0 C. Calculate the thermal conductivity of wood.

(b) Air at 30 0 C flows over a hot plate (50 c x 75 cm) maintained at 200 0 C with the help of an electric heater. The convection co-efficient is 20 W/m2 . Calculate the heat transfer.

Q.3 Derive the expressions for i) rate of heat transfer through a thin cylinder ii) temperature distribution along the radial direction of cylinder.

Q.4 Discuss, in detail flow over a flat plate.

Q.5 Explain in detail the properties of absorptivity, reflectivity and transmissivity

Q.6 State and derive the expression for kirchoff’s law.

Q.7 Derive the general expression for view factor.

Q.8 12 (twelve) number of fins each having thermal conductivity k=75 W/mK and 0.75 mm thickness protrude 25 mm from a cylindrical surface of 50 mm diameter and 1 m length placed in an atmosphere of 40 0C. If the cylindrical surface is maintained at 150 0 C and the heat transfer coefficient is h=23 W/m2 . K, calculate a) rate of heat transfer b) percentage increase in heat transfer due to fins.

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Q.9 Define Reynolds number and give the difference between free and forced convection. Also explain viscosity and its unit in SI system.

Q.10 Derive the expression for critical thickness of insulation for a cylinder or a tube.

MRW 002 Solved Assignment 2022-23 : All assignments are in PDF format which would be send on email/WhatsApp (9958676204) just after payment.


Dear Learner,

You have to submit one assignment in each course, i.e. MRW 002, MRW 002. All these are Tutor Marked Assignments (TMAs). Before attempting the assignments, please read the instructions provided in the Programme Guide carefully.

Kindly note, you have to submit these assignments to the Coordinator of your Study Centre within the stipulated time for being eligible to appear in the term-end examination. You must mention your Enrolment Number, Name, Address, Assignment Code and Study Centre Code on the first page of the assignment. You must obtain a receipt from the Study Centre for the assignments submitted and retain it. Keep photocopies of the assignments with you.

After evaluation, the assignments have to be returned to you by the Study Centre. Please insist on this and keep a record with you. The marks obtained by you will be sent by the Study Centre to the Student Evaluation Division at IGNOU, New Delhi.

Guidelines for Doing Assignments

There are five questions in each assignment, all carry equal marks. Attempt all the questions in not more than 500 words (each). You will find it useful to keep the following points in mind:

Planning: Read the assignments carefully. Go through the units on which they are based, make some points regarding each question and then rearrange them in a logical order

Organization and Presentation: Be analytical in your selection of the information for your answer. Give adequate attention to the introduction and the conclusion. Make sure that your answer is logical and coherent; has a proper flow of information.

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