Diploma (Electrical) Syllabus

Semester IV

  • COURSE CODE
    COURSE NAME
    CREDITS
  • JDEE-401

    Electrical Instruments and Measurements:

    UNIT-I

    Introduction to electrical measuring instruments: Electrical quantities and instruments for their measurements. Measurement and Errors, Accuracy, precision, types of errors, sensitivity, resolution and stability. Types of electrical measuring instruments, indicating, integrating and recording instruments. Essentials of indicating instruments, deflecting, controlling and damping torques.

    UNIT-II

    Ammeters and voltmeters: Construction and working principle of moving coil moving iron instruments. Merits and demerits, Instrument Transformer and their application in the extension of instrument range and simple problems.

    UNIT-III

    Wattmeter and Energy Meter: Construction, working principle, merits and demerits of dynamometer type wattmeter, Sources of errors, Power measurement in three phase circuit by two wattmeter and three wattmeter methods, simple problems, Energy meter (Induction type), Construction, working principle, merits and demerits of single-phase Energy meter.

    UNIT-IV

    Parameter Measurements: Phase sequence indicator, Synchronoscope, Different methods of measuring low, medium and high Resistance Inductance and Capacitance using Maxwell bridge, Wein’s bridge and Schering bridge, potentiometers. .

    UNIT-V

    Miscellaneous Measuring Instruments: The construction, working principle and application of ohm-meter, meggar, earth tester, multimeter, frequency meter (reed-type) single phase power factor meter (Electrodynamometer type), Cathode Ray Oscilloscope, construction, working of various controls of CRO.

    Books:

    • 1. Golding E.W. & F.C. Widdis, A.W. Wheeler “Electrical Measurement & Measuring Instrument”, & Co. Pvt. Ltd. India.
    • 2. Sawhney A.K., Dhanpat Rai & Sons, India “Electrical & Electronic Measurement & Instrument”.
    • 3. Forest K. Harries “Electrical Measurement”, Willey Eastern Pvt. Ltd. India .
    • 4. Stout” M.B. “Basic Electrical Measurement, Prentice hall of India, India.
    • 5. Cooper W.D. “Electronic Instrument & Measurement Technique”, Prentice hall International.
    • 6. Prashad Rajendra “Electrical Measurement &Measuring Instrument”, Khanna Publisher.
    • 7. Gupta J.B. “Electrical Measurements and Measuring Instruments”, S.K. Kataria.
    04
  • JDEE-402

    Electromechanical Energy Conservation Devices-II:

    UNIT-I

    Induction Motor: Rotating magnetic field for 3 phase concept of motors and its reversing. Construction and working of 3 phase induction motor ,Slip, effect of slip (Rotor frequency, rotor e.m.f., rotor current and rotor power factor). Torque equation, Torque- slip characteristics. Losses and efficiency; Load test: No load and blocked rotor tests, Double cage and Deep bar induction motor,

    UNIT-II

    Starting and speed control of Three-Phase Induction Motor: Need for starting, Types of starters: Direct On line, auto transformer, star delta starters for induction motor Speed control of induction motor by changes of voltage, Frequency, Poles and rotor resistance.

    UNIT-III

    A. C. Generator (Alternator): Working principle, construction, Full pitch and short pitch winding, pitch factor or coil span factor, distribution or winding factor, E.M.F. equation, rating of alternators, armature reaction , vector diagram of loaded alternator, voltage regulation and its determination (emf method) , conditions for parallel operation, Advantages and methods of parallel operation.

    UNIT-IV

    Synchronous Motor: Construction, working principle, Starting methods, effect of load on synchronous motor, effect of change in excitation on the performance of synchronous motor, V curves, torque & mechanical power developed, condition for max. Mechanical power, synchronous condenser, hunting and its elimination, comparison between induction motor and synchronous motor, Applications.

    UNIT-V

    F.H.P. Motors: Classification of F.H.P. motors, Production of rotating Magnetic field in 1 phase motors., Double revolving field theory, Construction working and application of- (i) Capacitor motor (all types), (ii) Shaded pole motor, (iii) 1 phase synchronous motor, (iv) 1 phase series and universal motor.

    Books:

    • 1. Asfaq Hussain “Basic Electrical Engineering”, Dhanpat Rai
    • 2. Nagrath I.J., Basic Electrical Engineering, Tata McGraw Hill.
    • 3. 3 Asfaq Hussain, “Electrical Machines” Dhanpat Rai
    • 4. A.E. Fitgerald, D.E., Higginbotham and A Grabel, Basic Electrical Engineering, McGraw Hill.
    • 5. H. Cotton, Advanced Electrical Technology, Wheeler Publishing.
    • 6. Dr. P.S. Bhimbra, “AC machines”, Khanna Publishers.
    04
  • JDEE-403

    Electrical Design, Drawing and Estimation-II:

    UNIT-I

    Principles of Estimating and Costing: Purpose of estimating and costing, essentials of estimating and costing-market survey, price list and net prices, preparation of list of materials, calculation of material and labour cost, contingencies, overhead charges, profit and total cost, quotations-comparative statement and orders, idea about tender forms. Use of E.S.R (state PWD and CPWD).

    UNIT-II

    Earthing: Need for earthing of electrical installations, advantages and disadvantages, effect of improper earthing, I.S. specifications regarding earthing of electrical installations, points to be earthed as per I.E. rules. Methods of earthing-plate and pipe earthing. Determination of size of earth wires and earth plates for different capacities of electrical installations, specification of earthing materials and their cost, Earthing of power plant and grid substation.

    UNIT-III

    Estimation of Power Wiring: I.S. specifications and I.E. rules, calculation of current for single and three phase motors. Determination of sizes of cables, conductors distribution board, main switches and starters for power circuits. Cost of equipments and accessories and schedule of materials. Estimation and cost of material and work for motors up to 20 H.P., pump sets and small workshops.

    UNIT-IV

    Estimation of Overhead and Underground Distribution Lines: Main components of overhead lines-line supports, cross-arm, clamps, conductors and stay sets, lightening arrestors, danger plates, ant climbing devices, bird guards, jumpers etc., concreting of poles, earthing of transmission line, formation of lines, specification of materials for O.H. lines, I.S. specification and I.E. rules. Cost of material and work for overhead and underground lines upto 11 KV only.

    UNIT-V

    Estimation of Small Sub-Station Main equipments and auxiliaries installed on the substation. Estimation of materials required for a small distribution substation (indoor and outdoor type-platform and pole mounted). Costing of material and work of above substations.

    Books:

    • 1. S.K Bhattacharya, “Electrical Engineering Drawing & Design Estimating”. Wiley Eastern Ltd. New Delhi.
    • 2. Surjeet Singh, “Electrical Eesign & Drawing” S.K.Kataria & Sons New Delhi.
    • 3. O. P. Soni,” Electrical Engg. Design & Drawing” Satya Prakashan Delhi.
    04
  • JDEE-404

    Electrical Device & Control:

    UNIT-I

    Introduction: Need of automatic control, Concept of open loop and closed loop control, Block diagram of feedback control system and its basic elements, relative advantages and disadvantages of open loop and closed loop control system, definition and explanation of given control system: Linear and Non-Linear Systems, Continuous and discrete Systems, Static and Dynamic Systems, Single Input Single Output (SISO) System and Multi-input Multi-output (MIMO) System.

    UNIT-II

    Components & Devices Used In Control System: Brief description and working of potentiometer, self balancing potentiometer, differential transformer, synchros, servomotors, tacho generators, saturable core reactor and magnetic amplifier.

    UNIT-III

    Input Output Relationship of System & Control system Components: Concept of transfer function and its use in control system, Derivation of transfer function of given systems: Simple RC low pass network, Lag, Lead, Lag-Lead compensating networks, DC servomotor and DC Tachogenerator, derivation of transfer function by block reduction technique and signal flow graph.

    UNIT-IV

    Performance of Control System: Step, Ramp, Pulse and sinusoidal type of inputs and their Laplace Transforms, Definitions of Rise time, Peak overshoot, Settling time, Natural frequency and Damping Ratio pertaining to second ordersystem, Initial value and final value theorems and their use in control systems,

    UNIT-V

    Stability Criterion: Bounded Input and Bounded Output (BIBO) System, Concept of Stability, stability criteria, different techniques of determining stability e.g. Routh, Nyquist criteria, bode plot and their applications to simple system. Electric Controller: On-OFF controller, Proportional, Proportional plus integral (PI), Proportional plus integral plus derivative (PID) controllers.

    Books:

    • 1. Norman S. Mise “Control System Engineering”,Wiley Publishing Co.
    • 2. M.Gopal, “Control System; Principle and design”, Tata McGraw Hill.
    • 3. M.Gopal, “Modern Control system”, Tata McGraw Hill.
    • 4. D. Roy Choudhary, “Modern Control Engineering”,Prentice Hall of India.
    04
  • JDEE-405

    Transmission & Distribution of Electrical Power-I:

    UNIT-I

    Electrical Design of Lines: Layout of different transmission and distribution systems, advantages of high voltage transmission, HV DC convertor transformer concept of short medium and long lines, parameters of lines, performance of short lines (Regulation, efficiency, vector diagrams) corona formation and its effects on performance of lines.

    UNIT-II

    Constructional Features of Transmission Lines: Constructional features of transmission lines, types of supports, types of conductors, types of insulators, their properties, selection and testing, voltage distribution of string insulators, equalization of potential, vibration damper.

    UNIT-III

    Economic Principle of Transmission: Kelvin's law, limitations of Kelvin's law, Modification in Kelvin's law.

    UNIT-IV

    Mechanical design of lines: Sag: Sag measurement, use of sag template Indian Electricity Rules pertaining to clearance, stringing of lines.

    UNIT-V

    Distribution System: Feeders distributors and service mains, radial and ring main distributors, A.C. distributors fed from one end and both ends. Simple problems on size of feeders and distributors.

    Books:

    • 1. Generation, Distribution & Utilization of Electrical Energy - C.L. Wadhwa –Wiley Eastern Pub.
    • 2. Power System – Ashfaq Husain
    04
  • JDAM-401

    Applied Mathematics-IV:

    UNIT-I

    Differential Calculus-II Function of two variables, identification of surfaces in space, partial derivatives, chain rule, higher order partial derivatives, Euler’s theorem (without proof) for homogeneous functions, Jacobians.

    UNIT-II

    Vectors Calculus Scalar and Vector function. Derivative, Gradient, Divergence & Curl of functions. Directional derivatives. Line, Surface & Volume integrals.

    UNIT-III

    Laplace Transformation Definition & properties of Laplace & Inverse Laplace transformation. Unit step function, periodic function. Solution of ordinary differential equations by Laplace transformation.

    UNIT-IV

    Beta and Gamma Functions Definition of Beta and Gamma functions, relation between Beta and Gamma functions, their use in evaluating integrals. Fourier Series Fourier series of odd and even functions.

    UNIT-V

    Probability and Statistics Definition of probability, laws and conditional distribution, discrete and continuous distribution. Binomial, Normal and Poisson distribution. Method of Least-Square and Curve Fitting: Straight line, parabola.

    Books:

    • 1. Applied Mathematics: Kailash Sinha, Meerut publication.
    • 2. Applied Mathematics: H.R Luthra, Bharat Bharti Prakashan.
    • 3. Applied Mathematics: H.K Das, C.B.S Publication.
    • 4. Mathematics for Polytechnic: S.P Deshpande, Pune Vidyarthi Griha.
    04
  • JDEE-451

    Electrical Instruments and measurements Lab:

    List of Experiments

    (Minimum 8 experiment should performed )

    • 1. To measure energy by a single phase energy meter and determine error.
    • 2. Measurement of load using strain gauge based load cell.
    • 3. Measurement of water level using strain gauge based water level transducer
    • 4. Measurement of temperature by RTD.
    • 5. Measurement of temperature by thermocouple.
    • 6. Measurement of voltage, frequency of a sinusoidal signal with C.R.O
    • 7. To measure inductance by maxwell's bridge.
    • 8. To measure power, power factor in a l-phase circuit using wattmeter and power factor meter and verify results with calculations
    • 9. Measurement of power and power factor of a 3-phase balanced load by 2-wattmeter method.
    • 10. Measurement of phase difference and frequency of a sinusoidal ac voltage using C.R.O.
    • 11. Measurement of low resistance by Kelvin’s double bridge
    • 12. Measurement of inductance by Maxwell’s bridge
    • 13. Measurement of inductance by Hay’s bridge
    • 14. Measurement of power and power factor of a single phase inductive load and to study effect of capacitance connected across the load on the power factor.
    02
  • JDEE-452

    Electromechanical Energy Conservation Devices-II Lab:

    (Minimum 8 experiment should performed )

    • 1. To perform load test on a three phase induction motor and draw:
      • i) Torque -speed characteristics
      • ii) Power factor-line current characteristics
    • 2. To start a 3 phase induction motor and to determine its slip at various loads.
    • 3. To connect and start an induction motor by using star delta starter, auto transformer starter, rotor starter and to change its direction of rotation.
    • 4. To perform open circuit and block rotor test on a 3 ph. induction motor and to determine its efficiency.
    • 5. Determination of performance curve and hence the coreloss of a single phase series motor.
    • 6. Voltage and current ratio of metal rectifier.
    • 7. Sequential operation of motors using timers.
    • 8. To perform no load and blocked rotor tests on a single phase induction motor and Determine equivalent circuit
    • 9. To study speed control of three phase induction motor byKeeping V/f ratio constant.
    • 10. To study speed control of three phase induction motor by varying supply voltage.
    • 11. To determine V-curves and inverted V-curves of a three phase synchronous motor.
    02
  • JDEE-453

    Electrical Design, Drawing and Estimation Lab:

    Drawing Work:

    • 1. Earthing 1 sheet
    • 2. Commercial and industrial buildings 1 sheet
    • 3. Power wiring layout and circuits 1 sheet
    • 4. Stays, line crossings, line earthing, end poles and terminal poles, junction poles/ towers and transposition pole/towers. 1 sheet
    • 5. Substation layout and busbar arrangements 1 sheet
    • 6. Machine drawings-induction and synchronous machines. 1 sheet
    • 7. Winding of induction machine, 3 ph; 1 ph. 1 sheet
    • 8. Reading and interpreting practical drawing of wiring installation and control circuits.
    • 9. Practice of domestic conduit wiring.
    • 10. Making of an extension board containing two 5 A and 15 Amp plug points controlled by individual switches using MCB/ELCB (Earth Leakage Circuit Braker).
    02
  • JGP-401

    General Proficiency
    02
  • Total Credits
     
    32