Department of Electrical & Electronics Engineering Electrical Machines Lab Description: The Electrical Machines lab is equipped with all types of AC and DC machines and Transformers mainly covered in the B.Tech. Curriculum. Through hands-on experiments with real machines, students gain practical experience in using various DC motors and Generators, AC motors and Alternators, Transformers, Starters etc. Faculty In-Charge Technician Area Total Investment No. of experiments Courses conducted

Exclusive / Shared

: G.Satyanarayana Rao M.Tech : A.Venkateswara Rao AMIE : 130.35 sq.m : Rs.09,07,598/: 14 : Basic Electrical & Electronics Lab (14), Electrical Machines-I (14), Electrical Machines-II (12) : Shared

Department of Electrical & Electronics Engineering Electrical Machines Lab List of Equipment S.No 1

Major Equipment 22 KVA, 220 V static rectifier

Qty 1

2 3 4

5 HP, 415 V, 4.9 A Alternator - DC Compound Motor set DC Compound Generator - DC Compound Motor set DC Series Generator - DC Series Motor set

1 1 1

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

DC Shunt Generator - DC Shunt Motor set DC Series Motor with load 5 HP, 20.8 A, 220 V DC Compound Motor with break drum 5 HP, 20.5 A, 220 V DC Shunt Motor with break drum 5 HP, 3-Ø Slip ring Induction Motor 5 HP, 3-Ø Squirrel Cage Induction Motor 5 HP, 3-Ø Synchronous Motor 3 HP, Single Phase Induction Motor 1 HP Single Phase Induction Motor Main Power Distribution Board 3-Ø, 15 A Auto Transformers 1-Ø, 8 A Auto Transformers 2 KVA Transformers 20 A Resistive Load 15 A Resistive Load

1 1 1 2 1 1 1 1 1 1 1 4 4 1 1

Department of Electrical & Electronics Engineering Electrical Machines-I Lab List of Experiments as per Syllabus S.No.

1.

Name of the Experiment Magnetization characteristics of a DC shunt generator

2.

Brake test on DC shunt motor

3.

Swinburne’s test on a DC shunt machine

4.

Fields test on DC series machines

5.

Separation of losses in DC shunt motor

6.

Load test on DC compound generator

7.

Load test on DC series generator

8.

Load test on DC shunt generator

9.

Speed control DC shunt motor

10. Brake test on DC compound motor 11. Hopkinson’s test on DC shunt machines 12. Magnetization characteristics of a DC shunt generator

List of Experiments beyond the Syllabus S.No.

Name of the Experiment Speed Control of BLDC Motor by Using Simulink Model 13.

14. Starting a dc Motor by Using MATLAB

Department of Electrical & Electronics Engineering Basic Electrical & Electronics Lab List of Experiments as per Syllabus S.No.

1.

Name of the Experiment Swinburne's test on dc shunt machine

2.

OC & SC tests on single-phase transformer

3.

Brake test on 3-phase induction Motor

4.

Regulation of alternator by synchronous impedance method

5.

Speed control of dc shunt motor by armature voltage control and flux control method

6.

Brake test on dc shunt motor

7.

Transistor CE characteristics

8.

Full wave rectifier with and without filters

9.

CE amplifiers

10. RC phase shift oscillator 11. Class – A power amplifier 12. Microprocessor

List of Experiments beyond the Syllabus S.No.

Name of the Experiment Separation of losses in dc shunt motor 13.

14. Brake test on dc compound motor

Department of Electrical & Electronics Engineering Electrical Machines-II Lab List of Experiments as per Syllabus S.No.

1.

Name of the Experiment OC & SC tests on single-phase transformer

2.

Sumpner’s test on pair of single-phase transformers

3.

Scott connection of transformers

4.

No-load & blocked rotor tests on three-phase induction motor

5.

Regulation of a three-phase alternator by synchronous impedance & mmf Methods

6.

V and inverted v curves of a three-phase synchronous motor

7.

Equivalent circuit of a single-phase induction motor

8.

Parallel operation of single-phase transformers

9.

Brake test on three-phase induction motor

10. Separation of core losses of a single-phase transformer

List of Experiments beyond the Syllabus S.No.

Name of the Experiment 11. Brake test on three-phase slip ring induction motor

12. Regulation of a three-phase alternator by Zero Power Factor method