Electrical Machines-I Lab (Diploma)

Tests on DC machines and transformers.

6 MonthsDuration 5Chapters16Topics

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Syllabus · पाठ्यक्रम

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01DC Machine Familiarisation and Starters 4 topics

Parts of a DC machine
Three-point starter
Four-point starter
Reversal of direction

02DC Generator Characteristics 2 topics

Open-circuit characteristic and critical resistance
Load characteristics of shunt generator

03DC Motor Tests 4 topics

Speed control by armature and field control
Load test on DC shunt motor
Swinburne's test
Load test on DC series motor

04Single-Phase Transformer Tests 4 topics

Polarity and ratio test
Open-circuit and short-circuit tests
Efficiency and regulation
Direct load test

05Three-Phase Transformer Connections 2 topics

Star-star, star-delta and delta-star connections
Parallel operation of two single-phase transformers

About

You will be able to

Identify DC machine parts and connect three-point and four-point starters
Plot the open-circuit and load characteristics of DC generators
Control the speed of DC shunt motors and perform load and Swinburne's tests
Perform polarity, ratio, open-circuit, short-circuit and load tests on single-phase transformers
Make three-phase transformer connections and check parallel operation

Who it is for

Diploma Electrical Engineering students of Semester 3 (BTEUP)
ITI Electrician pass-outs joining the diploma (lateral entry)

What you need

Theory of Electrical Machines-I of the same semester

Questions

Is safety training given before machine tests?

Yes. Correct use of starters, rating of meters and safe switching are explained before each test.

Will the lab file be checked?

Yes. Observation tables, graphs and results are checked for every experiment.

Is this course based on the BTEUP syllabus?

Yes. The units follow the BTEUP (Board of Technical Education, Uttar Pradesh) diploma syllabus. If your polytechnic follows a different board or a revised scheme, the centre teaches your own syllabus.