MRW 005 Solved Assignment 2024-25
MRW 005 Solved
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Course Code: MRW 005
Assignment Code: MRW 005 ASST/TMA/2024-25
Marks: 100
NOTE: All questions are compulsory
Note: Attempt all the questions and submit this assignment
to the Coordinator of yourstudy centre. Last date of submission for July 2023
session is 31st October, 2023 and for January 2024 session is 30th April 2024.
Q.1 Explain the terms
absorptivity, reflectivity and transmissivity of radiant energy. How are they
related to each other for a black body and an opaque body?
Absorptivity,
reflectivity, and transmissivity are terms used to describe how materials
interact with radiant energy, such as light or electromagnetic radiation. These
terms are particularly important in understanding the behavior of materials in
relation to heat transfer and optics.
Absorptivity
(α): This refers to the ability of a material to absorb radiant energy. It is
the fraction of incident radiation that is absorbed by the material.
Absorptivity values range from 0 to 1, where 0 indicates that all incident
radiation is reflected or transmitted, and 1 indicates that all incident
radiation is absorbed.
Reflectivity
(ρ): Reflectivity is the fraction of incident radiation that is reflected by a
material. It represents the proportion of incident radiation that is not
absorbed or transmitted but instead bounces off the surface of the material.
Reflectivity also ranges from 0 to 1, where 0 means all incident radiation is
absorbed, and 1 means all incident radiation is reflected.
Transmissivity
(τ): Transmissivity refers to the fraction of incident radiation that passes
through a material without being absorbed. It is relevant in the context of
materials that are transparent or translucent. Transmissivity values also range
from 0 to 1, where 0 means all incident radiation is absorbed or reflected, and
1 means all incident radiation passes through the material without being absorbed
or reflected.
A black body is
an idealized object that absorbs all incident radiation, regardless of
wavelength or angle of incidence. Therefore, its absorptivity (α) is 1, and its
reflectivity (ρ) and transmissivity (τ) are both 0. A black body absorbs all
radiation that falls on it and does not reflect or transmit any.
An opaque body
is one that does not transmit any light through it. Therefore, its
transmissivity (τ) is 0. However, an opaque body may reflect and absorb
radiation. The sum of its reflectivity (ρ) and absorptivity (α) would be 1,
meaning that whatever radiation is not reflected is absorbed. So, for an opaque
body, ρ + α = 1.
In summary,
absorptivity, reflectivity, and transmissivity provide a comprehensive
description of how materials interact with radiant energy, and they are
interrelated such that for any given material, the sum of absorptivity,
reflectivity, and transmissivity equals 1. However, the specific values of
these properties vary depending on the material and the characteristics of the
incident radiation.
Q.2 a) Give the
classification of various types of solar cell?
b) Describe and draw
the current-voltage (V-I) characteristics of a PV cell.
Q.3 a) Explain the
construction of solar module. How does a PV panel rated?
b) State various losses
in the solar module.
Q.4 Explain
classification of heat conversion devices. Also, elaborate the advantages and
disadvantages of concentrating and non-concentrating solar thermal devices.
Q.5 Explain the
function of stand-alone solar PV system without battery with neat block diagram
of any one configuration?
Q.6 List the various
steps involved in the design of solar PV system.
Q.7 What is the effective
life of a photovoltaic module? State the factors on which voltage output of a
PV module depends.
Q.8 Explain the working
principles of Solar Air Heating Systems.
Q.9 Describe the
concept of direct gain heating and cooling of solar passive buildings. Which
materials should be used in such designs?
Q.10 a) Describe the
functioning of a solar dryer. Explain dehydration of Garlic.
b) Give five steps
which you can follow in order to reduce the effect of greenhouse.
MRW 005 Handwritten Assignment 2024-25
MRW 005 Solved
Assignment 2024-25: We provide handwritten PDF and Hardcopy to our
IGNOU and other university students. There are several types of handwritten
assignment we provide all Over India. We are genuinely work in this field for
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Important Note - You may be aware that you need to submit
your assignments before you can appear for the Term End Exams. Please remember
to keep a copy of your completed assignment, just in case the one you submitted
is lost in transit.
Submission Date :
31st March 2023 (if
enrolled in the July 2024-25 Session)
30th Sept, 2023 (if
enrolled in the January 2024-25 session).
IGNOU Instructions for the MRW 005 Assignments
MRW 005 Solar
Energy and Applications Assignment 2024-25
Before ate mpting the assignment, please read the following instructions
carefully.
1. Read the detailed
instructions about the assignment given in the Handbook and Programme Guide.
3. Write the course
title, assignment number and the name of the study centre you are attached to
in the centre of the first page of your response sheet(s).
4. Use only
foolscap size paper for your response and tag all the pages carefully
5. Write the relevant
question number with each answer.
6. You should write
in your own handwriting.
GUIDELINES FOR IGNOU Assignment MRW 005023-24
MRW 005 Solved
Assignment 2024-25 You
will find it useful to keep the following points in mind:
1. Planning: Read the questions carefully. Go through the
units on which they are based. Make some points regarding each question and
then rearrange these in a STATISTICS IN PSYCHOLOGYal order. And please write
the answers in your own words. Do not reproduce passages from the units.
2. Organisation: Be a little more selective and analytic before
drawing up a rough outline of your answer. In an essay-type question, give
adequate attention to your introduction and conclusion. The introduction must
offer your brief interpretation of the question and how you propose to develop
it. The conclusion must summarise your response to the question. In the course
of your answer, you may like to make references to other texts or critics
as this will add some depth to your analysis.
3. Presentation: Once you are satisfied with your
answers, you can write down the final version for submission, writing each
answer neatly and underlining the points you wish to emphasize.
IGNOU Assignment Front Page
The top of the first
page of your response sheet should look like this: Get IGNOU Assignment Front page through. And
Attach on front page of your assignment. Students need to compulsory attach the
front page in at the beginning of their handwritten assignment.
ENROLMENT NO: …………………………
NAME: ………………………………………
ADDRESS: …………………………………
COURSE TITLE: …………………………
ASSIGNMENT NO: ………………………
STUDY CENTRE: …………………………
DATE: ………………………………………
MRW 005 Handwritten Assignment 2024-25
MRW 005 Solved
Assignment 2024-25: We provide handwritten PDF and Hardcopy to our
IGNOU and other university students. There are several types of handwritten
assignment we provide all Over India. We are genuinely work in this field for
so many time. You can get your assignment done - 8130208920
PDF & Handwritten
WhatsApp – 8130208920
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