ELECTRICAL TECHNOLOGY
CLASS - XII / Subject Code - 819
After successfully completing the two years of Senior Secondary Skill Course the student would have acquired
relevant appropriate and adequate technical knowledge together with professional skills and competencies
in the field of Electrical Technology so that he/she is properly equipped to take up gainful employment in this
vocation.
OBJECTIVES OF THE COURSE:
The concepts, principles of working, maintenance, constructional details and functions of
electrical motors, electrical appliances, measuring and testing instruments and electrical circuits.
CAREER OPPORTUNITIES:
Testing, installation, fault identification, and repairing of electrical motors, appliances, and instruments. Different types of electrical wiring.
Instructor
The relevant basic concepts and principles in basic science subjects (Physics, Chemistry and
Mathematics) so that he/she is able to understand the different subjects.
- E-learning & Onsite classes
- A 'Workshop' class
- Industrial Visit
- Certificate of Completion
Course Units
Generation of A.C. voltage, its generation and wave shape. Cycle, frequency, peak value
(maximum value), average value, instantaneous value , R.M.S. value, form factor, crest
factor, phase, phase difference, power and power factor, A.C. Series Circuits with (i)
resistance and inductance (ii) resistance and capacitance and (iii) resistance inductance
and capacitance, Q factor of R.L.C. series circuits.
Types of transformer – step-up and step-down transformer, voltage and current
transformer, auto-transformer. Construction, working principles and applications of
different types of transformers, rewinding of transformers, cooling of transformers. Safety
measures precautions from operational point of view.
Primary cell, wet cell, dry cell, battery, series and parallel connections of cells, Secondary cells, Lead
Acid Cell, Discharging and recharging of cells, common charging methods, preparation of electrolyte,
care and maintenance of secondary cells
Principle, working & starting of three phase induction motor.
Induction type Energy meter analog multi meter, digital multi meter, dynamometer type
wattmeter- their circuit connection & application for measurement, operation & application
(i) Immersion Heater and Geyser:
(ii) Electric Mixer, Grinder, and Blender:
(iii) Room Cooler:
(iv) Electric Motor Used in Domestic Appliances
(v) Basic Occupational and Safety Practices