SUBJECT NAME : ELECTRICAL MACHINES I
SUBJECT CODE : 4030330
ELECTRICAL MACHINE I FULL N SCHEME
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ELECTRICAL MACHINES 1 IMPORTANT QUESTIONS WITH ANSWERS ENGLISH MEDIUM FOR 4 UNITS ๐๐๐๐
ELECTRICAL MACHINES 1 IMPORTANT QUESTIONS WITH ANSWERS TAMIL MEDIUM FOR 4 UNITS ๐๐๐๐
Download*Electrical Machines I*
Important *Part B* questions...
*Unit I*
1. Faraday's law of electromagnetic induction.
2. Principle of operation of DC Generator.
3. Construction and Working of DC Generator.
4. EMF equation of DC Generator.
5. Armature reaction in DC Generator.
*Unit II*
1. Principle of operation of DC Motor.
2. Construction and Working of DC Motor.
3. Torque equation of DC Motor.
4. 3 point & 4 point Starter.
5. Swinburne's test of DC Motor.
*Unit III*
1. Construction and Working of Transformer & it's types.
2. EMF equation of Transformer.
3. Phasor diagrams for Inphase, Leading & Lagging power factor load.
4. Explain Auto Transformer.
5. Explain OC & SC test in single phase Transformer.
*Unit IV*
1. Different methods of connections in 3 phase Transformer.
2. Different methods of Cooling in Transformer.
3. Explain important accessories in 3 phase Transformer.
4. Explain Off - load & On - load Tap Changer.
*Unit V*
1. Importance of Maintenance. Explain different methods of maintenance in DC machine.
2. Common defects in Commutator. How it can be rectified?
3. Maintenance of Brush & Brush holder in DC machine.
4. Need for Transformer oil maintenance. Explain BDV test (or) Transformer oil tester with neat diagram.
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Electrical Machines important questions 100% Pass
Unit-1
1.Faraday's Laws of Electro megnetic induction
2. DC Generator full topic operation, construction and types
3. EMF equation of DC generator
4.Load characteristics of DC shunt and Compound
Unit-2
1.DC Motor operation , types and application and losses
2. Speed control of DC shunt motor
3. 3 point and 4 point starter
4. Speed control of DC series
Unit-3
1.Auto transformer and dry type transformer
2.Amorphous core transformer and all day efficiency
3.Single phase transformer and emf equation of transformer
4.Oc and S.c test
Unit-4
1.Load tap changer transformer and on load tap changer
2.Grouping of transformer
3.Three methods of cooling transformer
4.Bucholz relay and different connection of three phase transformer
Unit-5
1.Defects in commutator and how it rectified
2.Notes on preventive maintenance
3. Causes of sparking in commutator
4. BDV test and transformer oil tester
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