DIPLOMA IN
ELECTRICAL ENGINEERING, SEMESTER – III
1. Electrical 224311(24) Elements
of Electrical Engineering
2. Electrical 224312(24) Electrical
Drawing
3. Mech. 224313(37) Fundamentals
of Mechanical Engineering
4. Electronics 224314(28) Basic
Electronics
5. Electrical
224315(24) Electrical Circuit
6. Electrical
224321(24) Elements of Electrical Engineering Lab
7. Mechanical 224322(37) Fundamentals
of Mechanical Engineering Lab
8. Elec. & Tele.
224323(28) Basic Electronics Lab
9. Electrical 224324(24) Electrical
Circuit Lab
10. Electrical 224325(24) Electrical
Workshop
1. SUBJECT - ELEMENTS OF ELECTRICAL ENGINEERING - 130 Mark
Chapter Name - Marks
1. Basic Concepts of
Electrical Engineering – 10 Mark
2. Electrical
Materials – 15 Mark
3. Capacitors – 20
Mark
4. Inductors – 15
Mark
5. Magnetic Circuits
– 20 Mark
6. Electromagnetic
Inductions - 20 Mark
Chapter – 1 “Basic Concepts of
Electrical Engineering”
Concept of current
(D.C./A.C.)
Concept of voltage
(D.C./A.C.)
- E.M.F.
- Potential
difference
- Terminal voltage
Concept of Resistance
- Properties.
- Classification of
resistors based on ohmic value & material.
- Practical
application of above types of resistors.
- Use of a rheostat
in laboratory.
Concept of Conductor,
Insulator, Semiconductor.
Chapter – 2 “Electrical Materials”
Conducting materials
& properties.
Insulating materials
& properties.
Magnetic materials
& properties.
Semi Conduction
materials & properties.
Chapter – 3 “Capacitors”
Concept of capacitor
formation, Expression for capacitance.
Energy stored in Capacitor.
Dielectric loss.
Dielectric materials
used in capacitors, Types of capacitors.
Effect of dielectric
media on Capacitance.
- Electric field
strength
- Electric flux
density.
- Permittivity.
Expression for
capacitance of Parallel plate capacitor.
Series & parallel
combination of capacitors.
Charging and
discharging of capacitors (no derivation, only numerical)
Concept of inter-turn
capacitance, line capacitance, capacitance in
Cables, overhead
transmission & distribution lines.
A.C./D.C. capacitors
and applications.
Chapter – 4 “Inductors”
Different types of
inductors Construction.
Rise and decay of
current in an inductor (No derivation, only numerical)
Energy stored in
inductor (No derivation, only numerical)
Inductance in A.C.
and D.C. circuits.
Chapter – 5 “Magnetic Circuits”
Concept of magnetic
flux.
Concept of
electromagnetism.
- Magneto motive
force.
- Magnetic field
strength
- Permeability.
- Reluctance.
Magnetic leakage,
leakage coefficient.
Magnetic circuits
- Uniform magnetic
circuits.
- Series &
parallel circuits.
Comparison of
electric & magnetic circuits.
Chapter – 6 “Electromagnetic
Induction”
Review of Faraday’s
laws of electromagnetic induction.
Induced E M.F’s.
Fleming’s R.H. rule;
direction of induced E.M.F.
Concept of self and
mutual inductances.
Expression for self
and mutual inductances.
- Application of
Faraday’s laws.
Interaction between
two or more magnetic field.
Force on a current
carrying conductor placed in a magnetic field.
Fleming’s L.H. rule.
Numericals on above.
2. SUBJECT - ELECTRICAL DRAWING - 130 Mark
Chapter Name - Marks
1. Symbols and Codes -
10 Mark
2. Mountings 15 Mark
3. Domestic Wiring - 15
Mark
4. Instrument circuit
- 15 Mark
5. Constructional Features
of Electrical Machines - 20 Mark
6. Power System - 15
Mark
7. Cables - 10 Mark
Chapter – 1 “Symbols and Codes”
ISI Symbols in
electrical engineering
Conventions for
circuit and schematic representation of electrical and
electronic components,
instruments and equipment
Chapter – 2 “Mountings”
Different types of
mountings
Enclosures for
electrical equipments
Panel wiring with CB,
isolator, synchroscope, regulator, etc
Plate & Pipe
earthing
Chapter –3 “Domestic Wiring”
All types of light
circuit
Fluorescent tube
& fan circuit wiring
Intermediate switch
circuit
Chapter – 4 “Instrument circuit”
Connection of all
types of meters (PMMC, Moving Iron, dynamo
Meter, Induction
type.
Extension of range
using shunt, multiplier, CT, PT
Chapter – 5 “Constructional
Features of Electrical Machines”
Parts of a
transformer, D.C. machines, alternators, induction motors,
Development diagram
of windings of D.C. and A.C. machines
AC & DC Motor
starter
Chapter – 6 “Power System”
Transmission line
structure
Bushings, insulators
Overhead conductor
joints
Substation drawing,
lightning arrestors
Chapter – 7 “Cables”
Cross-section of
Cables, Power cable laying, cable joints
3. SUBJECT - FUNDAMENTALS OF MECHANICAL ENGINEERING - 130 Mark
Chapter Name - Marks
1. Properties and
Testing Of Materials – 10 Mark
2. Materials – 10 Mark
3. Metallurgical
processes – 10 Mark
4. Fluid Mechanics – 15
Mark
5. Pump and Water
Turbine – 10 Mark
6. Power Transmission
– 10 Mark
7. Strength of
Material – 15 Mark
8. Thermodynamic – 20
Mark
Chapter – 1 “Properties and
Testing Of Materials”
Introduction
Mechanical
properties-stress
Strain
Strength
Elasticity
Plasticity
Ductility
Toughness
Brittleness
Hardness
Malleability
Formability
Weld ability
Tensile strength
Fatigue
Stiffness
Tenacity
Modulus of
elasticity
Modulus of rigidity
Endurance
Poisson’s ratio
Proportional limit
Yield point
Ultimate strength
fabrication characteristics
Destructive and
non-destructive testing
Stress-strain
diagram
Hardness tests
Impact tests
Chapter – 2 “Materials”
Introduction
Ferrous materials
cast iron
Classification
Wrought iron
Steel-classification-Alloy
steels Major alloying elements
Stainless steel-low
carbon medium carbon and high carbon steels
Classification of
alloy steels
Tools steels
Non-ferrous metals-copper
properties
Application and
classification
Brass –types
bronze-types and applications
Special alloys-high
tensile brass German silver
Monel metal
Bearing alloys
Aluminum-classification
and application
Zinc-properties
Zinc alloys
Tin properties-application
Plastic-classification
Application
Lubricants-properties
and selection
Chapter – 3 “Metallurgical
processes”
Introduction-various
processes
Secondary processes
Application of
powder metallurgy
Advantages and
disadvantages
Welding-purpose
Types forged welding
Soldering
Brazing
Chapter – 4 “Fluid Mechanics”
Hydrostatics - Fluids
and their properties, Liquid pressure,
Intensity of Pascal’s
law, Pressure head of liquid, Total pressure,
Concept of atmospheric
and gauge pressure, Absolute pressure.
Fluid flow - types of
flow, Bernoulli’s theorem statement and
application, U tube
manometer, Venturi meter, pitot tube, orifice
meter, Cc, Cv &
Cd, simple problem related to Bernoulli’s theorem
Chapter – 5 “Pump And Water
Turbine”
Pump – Reciprocating
pump, centrifugal pump, compression
Between
Reciprocating & centrifugal pump
Turbines- purpose,
type, construction and working of Pelton wheel,
Francis and Kaplan
turbine
Hyde Power Plant-
it’s construction and working processes
Chapter – 6 “Power Transmission”
Importance of power
transmission, Model of power transmission and
it’s application, Belt
and rope drive systems, power transmission by
Gears and chains,
role of coupling and journal in power, transmission
Simple problem
related with belt drive velocity ratio, max. Power
Transmission through
belt drive.
Chapter – 7 “Strength of Material”
Definition of
bending, shear force and bending moment, S.F. & B.M.
diagrams for
cantilever, simply supported and over hanging beams with
point & U.D.L.
Theory of simple bending, bending stresses in beams,
moment of
resistance, section modulus, theory of pure torsion of circular
shaft, polar
modulus, torsional rigidity classification of frames, stresses
in frames.
Chapter – 8 “Thermodynamic”
Properties of gases,
Charle’s law, Boyle’s law, characteristic equation
For perfect gas, 1st
& 2nd law of thermodynamics, enthalpy and entropy,
Various processes
like isobaric, isothermal, isentropic throttling process
polytropic process.
Ideal heat engine cycles, thermal efficiency, I. HP and
B HP, Basic steam
power cycle, Classification of boiler, boiler mountings
And accessories.
Modern high pressure boiler, internal combustion engine
Introduction,
classification and working principle of 2 stroke and 4 stroke
Cycle engine.
4. SUBJECT - BASIC ELECTRONICS - 130 Mark
Chapter Name - Marks
1. Introduction to
semiconductor devices - 15 Mark
2. Rectifiers &
Filters – 15 Mark
3. Feedback Amplifiers
– 15 Mark
4. Multistage
Amplifiers – 15 Mark
5. Tuned Amplifiers
– 15 Mark
6. Oscillators – 15
Mark
7. Pulse &
Switching Circuits – 10 Mark
Chapter – 1 “Introduction To
Semiconductor Devices”
P-N junction diode -
concept of barrier potential, forward & reverse
biasing, V-I
characteristics & applications
Zener Diode - Symbol,
working principle, characteristics & applications
Transistor- Basic
structure, PNP & NPN types, transistor configuration,
Characteristics,
switching action, transistor biasing and applications.
Chapter – 2 “Rectifiers &
Filters”
Half wave
rectifiers.
Full wave rectifiers
(Center-tap & Bridge).
Ripple factor, PIV,
rectification efficiency, comparison, merits and
Demerits of
different types of rectifier.
D.C. improvement
techniques - a) RC filter b) LC filter c) ? -filter.
Zener Diode as Shunt
regulator.
Transistor Series
regulator (using single transistor)
Complete D.C. Power
Supply Circuit
(using series
regulator comparator & current limiter stage.)
Chapter – 3 “Feedback Amplifiers”
Concept of feedback,
Block diagram of feedback systems,
feedback factor
(Beta).
Types of feedback,
strengths and limitations of negative feedback.
Feedback connections-
voltage-series, voltage-shunt,
current-series, current
shunt.
Single stage
amplifier – working, effect of negative feedback.
Emitter follower
circuit – effect of negative feedback.
Feedback with &
without bypass capacitor in single stage CE amplifier.
Chapter– 4 “Multistage Amplifiers”
General block
diagram of multi-stage amplifier, necessity of multistage amplifiers.
Different coupling
methods – working, frequency response,
Applications and
comparison of: a) RC coupled, b) LC coupled,
c) Direct-coupled,
and d) Transformer coupled amplifiers.
Chapter – 5 “Tuned Amplifiers”
Concept of resonance
circuit
Concept of tuned
amplifier
Single-tuned voltage
amplifier, its frequency response and limitation.
Double-tuned voltage
amplifier, its frequency response and
limitation.
Concept of staggered
tuning.
Chapter – 6 “Oscillators”
Principle of
Oscillations; Barkhausen Criteria.
Working of RC
Oscillators – phase-shift and Wien bridge; LC
Oscillators - tuned
collector, tuned base, Hartley and Colpitt's;
Chapter – 7 “Pulse &
Switching Circuits”
Diode and transistor
as a switch.
Wave shaping circuits
– clipper, clamper, differentiator and integrator
using passive
components.
Multivibrators –
Bistable, Monostable and Astable type circuit.