EC 2201 - ELECTRICAL ENGINEERING |
UNIT I D.C. MACHINES |
Constructional details – emf equation – Methods of excitation – Self and separately
excited generators – Characteristics of series, shunt and compound generators –
Principle of operation of D.C. motor – Back emf and torque equation – Characteristics of
series, shunt and compound motors - Starting of D.C. motors – Types of starters -
Testing, brake test and Swinburne’s test – Speed control of D.C. shunt motors. |
UNIT II TRANSFORMERS |
Constructional details – Principle of operation – emf equation – Transformation ratio –
Transformer on no load – Parameters referred to HV/LV windings – Equivalent circuit –
Transformer on load – Regulation - Testing – Load test, open circuit and short circuit
tests. |
UNIT IIIINDUCTION MOTORS |
Construction – Types – Principle of operation of three-phase induction motors –
Equivalent circuit – Performance calculation – Starting and speed control – Single-phase
induction motors (only qualitative treatment). |
UNIT IVSYNCHRONOUS AND SPECIAL MACHINES |
Construction of synchronous machines-types – Induced emf – Voltage regulation; emf
and mmf methods – Brushless alternators – Reluctance motor – Hysteresis motor –
Stepper motor. |
UNIT VTRANSMISSION AND DISTRIBUTION |
Structure of electric power systems – Generation, transmission and distribution systems
- EHVAC and EHVDC transmission systems – Substation layout – Insulators – cables. |
Text Book |
1. D.P.Kothari and I.J.Nagrath, ‘Basic Electrical Engineering’, Tata McGraw Hill
publishing company ltd, second edition, 2007 (Reprint).
2. C.L. Wadhwa, ‘Electrical Power Systems’, New Age International, fourth edition, 2007. |
References |
1. S.K.Bhattacharya, ‘Electrical Machines’, Tata McGraw Hill Publishing company ltd,
second edition, 2007.
2. V.K.Mehta and Rohit Mehta, ‘Principles of Power System’, S.Chand and Company
Ltd, second edition, 2006. |