Download Previous year Diploma Paper of Environmental Engineering 6th Sem Civil/5197/Dec 2015 Paper
6.1 UTILIZATION OF ELECTRICAL ENERGY
This subject assumes importance in view of the fact that a diploma engineer has to work in a wide
spectrum of activities wherein he/she has to make selection from alternative schemes making technical and
economical considerations; e.g. to plan and design an electrical layout using basic principles and
handbooks, to select equipment, processes and components in different situations. The contents have
been designed keeping the above objectives in view. Besides giving him basic knowledge in the topics
concerned, attempts have been made to ensure that the knowledge acquired is applied in various fields as
per his job requirements. To orient the subject matter in the proper direction, visits to industrial
establishments are recommended in order to familiarize the students with the new developments in
1. Illumination: (12 hrs)
1.1 Nature of light, visibility spectrum curve of relative sensitivity of human eye and wave
length of light
1.2 Definition: Luminous flux, solid angle, luminous intensity, illumination, luminous efficiency,
depreciation factor, coefficient of utilization, space to height ratio, reflection factor, glare,
1.3 Laws of illumination – simple numericals
1.4 Different type of lamps, construction and working of Incandescent and Discharge lamps –
their characteristics, Fittings required for filament lamp, mercury vapour Sodium Lamp,
fluorescent lamp, Halogen lamp, Neon lamp, Compact fluorescent (Lamp(CFL).
1.5 Calculation of number of light points for interior illumination, calculation of illumination at
different points, considerations involved in simple design problems. Illumination schemes;
indoor and outdoor illumination levels
1.6 Main requirements of proper lighting; absence of glare, contrast and shadow
1.7 General ideas about time switches, street lighting, flood lighting, monument lighting and
decorative lighting, light characteristics etc.
2. Electric Heating (10 hrs)
2.1 Advantages of electrical heating
2.2 Heating methods:
a) Resistance heating – direct and indirect resistance heating, electric ovens, their
temperature range, properties of resistance heating elements, domestic water
heaters and other heating appliances, thermostat control circuit
b) Induction heating; principle of core type and coreless induction furnace, their
construction and applications
c) Electric arc heating; direct and indirect arc heating, construction, working and
applications of arc furnace
d) Dielectric heating, applications in various industrial fields
e) Infrared heating and its applications (construction and working of two appliances)
f) Microwave heating and its applications (construction and working of two
g) Solar Heating
2.3 Calculation of resistance heating elements (simple problems)
3. Electric Welding: (8 hrs)
3.1 Advantages of electric welding
3.2 Welding method:
a) Principles of resistance welding, types – spot, projection, seam and butt welding,
b) Principle of arc production, electric arc welding, characteristics of arc; carbon arc,
metal arc, hydrogen arc welding method and their applications. Power supply
requirement. Advantages of using coated electrodes, comparison between AC and
DC arc welding, welding control circuits, welding of aluminum and copper
4. Electrolytic Processes: (10 hrs)
4.1 Need of electro-deposition 4.2 Laws of electrolysis, process of electro-deposition – clearing, operation, deposition of metals, polishing and buffing 4.3 Equipment and accessories for electroplating 4.4 Factors affecting electro-deposition 4.5 Principle of galvanizing and its applications 4.6 Principles of anodizing and its applications 146 4.7 Electroplating of non-conducting materials 4.8 Manufacture of chemicals by electrolytic process
5. Electrical Circuits used in Refrigeration, Air Conditioning and Water Coolers: (10 hrs)
5.1 Principle of air conditioning, vapour pressure, refrigeration cycle, eco-friendl refrigerants
5.2 Description of Electrical circuit used in
c) Water cooler
6. Electric Drives: (20 hrs)
6.1 Advantages of electric drives
6.2 Characteristics of different mechanical loads
6.3 Types of motors used as electric drive
6.4 Electric braking
b) Rheostatic braking
c) Regenerative braking
6.5 General idea about the methods of power transfer by direct coupling by using devices like
belt drive, gears, chain drives etc.
6.6 Examples of selection of motors for different types of domestic loads
6.7 Selection of drive for applications such as general workshop, textile mill, paper mill, steel
mill, printing press, crane and lift etc. Application of flywheel.
6.8 Specifications of commonly used motors e.g. squirrel cage motors, slip ring induction
motors, AC series motors, Fractional Kilo Watt(FKW) motors
6.9 Selection of motors for Domestic Appliances
7. Electric Traction: (10 hrs)
7.1 Advantages of electric traction
7.2 Different systems of electric traction, DC and AC systems, diesel electric system, types of
services – urban, sub-urban, and main line and their speed-time curves
7.3 Different accessories for track electrification; such as overhead catenary wire, conductor
rail system, current collector-pentagraph
7.4 Factors affecting scheduled speed
7.5 Electrical block diagram of an electric locomotive with description of various equipment
and accessories used.
7.6 Types of motors used for electric traction
7.7 Power supply arrangements
7.8 Starting and braking of electric locomotives
7.9 Introduction to EMU and metro railways
7.10 Train Lighting Scheme
Section B :gsed may 2017 diploma psbte paper solution
Importance of generic skill development.
Personality and important determinants of personality.
How stress can be managed
Conversation and how to improve conversation skills.
LLL and its importance.
Delphi method and Brainstorming.
Main qualities of a successful entrepreneur.
General steps followed in problem solving.
Everything that is around us is called Environment.
Plants convert food into Photo Synthesis
Driving force of an eco-system is Solar energy .
Penicillin is derived from a fungus called ____.
X-rays are a source of Radioactive.
Very small ecosystem is called
Fluoride pollution mainly affects Teeth
Ozone is present in Stratosphere
The process of extracting mineral from the earth is known as Mining
Animals that feed on both plants and other animals are called Omnivores.
Ecology its types
Energy flow through an ecosystem
Laws of energy Flow
Chloro Fluorocarbons (CFCs) and their Effects
Green building Effect
food chain and food web
Effects of global Warming
Bio-diversity its types
Environmental Engineering 6th Sem Civil/5197/May 2015 Paper
Various sources of air pollution
Eco-system. its components
Various causes of species endangerment
Different non-conventional sources of energy in environment protection