Electrical Machines MCQ (Multiple Choice Questions)

Electrical Machines MCQ - Multiple Choice Questions and Answers

Our 1000+ Electrical Machines MCQs (Multiple Choice Questions and Answers) focuses on all chapters of Electrical Machines covering 100+ topics. You should practice these MCQs for 1 hour daily for 2-3 months. This way of systematic learning will prepare you easily for Electrical Machines exams, contests, online tests, quizzes, MCQ-tests, viva-voce, interviews, and certifications.

Electrical Machines Multiple Choice Questions Highlights

- 1000+ Multiple Choice Questions & Answers (MCQs) in Electrical Machines with a detailed explanation of every question.
- These MCQs cover theoretical concepts, true-false(T/F) statements, fill-in-the-blanks and match the following style statements.
- These MCQs also cover numericals as well as diagram oriented MCQs.
- These MCQs are organized chapterwise and each Chapter is futher organized topicwise.
- Every MCQ set focuses on a specific topic of a given Chapter in Electrical Machines Subject.

Who should Practice Electrical Machines MCQs?

– Students who are preparing for college tests and exams such as mid-term tests and semester tests on Electrical Machines.
- Students who are preparing for Online/Offline Tests/Contests in Electrical Machines.
– Students who wish to sharpen their knowledge of Electrical Machines Subject.
- Anyone preparing for Aptitude test in Electrical Machines.
- Anyone preparing for interviews (campus/off-campus interviews, walk-in interview and company interviews).
- Anyone preparing for entrance examinations and other competitive examinations.
- All - Experienced, Freshers and College / School Students.

Electrical Machines Chapters

Here's the list of chapters on the "Electrical Machines" subject covering 100+ topics. You can practice the MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice.

  1. Magnetic Circuits
  2. Basic Concepts in Rotating Machines
  3. Constructional Features of Rotating Electrical Machines
  4. Principles of Electro mechanical Energy Conversions
  5. Rating and Loss Dissipation
  6. Electrical Machine Applications/Armature Reaction and Commutation
  7. Electromechanical Energy Conversions
  8. DC Machines
  9. DC Generators
  10. DC Motors
  11. Synchronous Machines
  12. Synchronous Generators
  13. Synchronous Motors
  14. Efficiency and Regulation
  15. Synchronous Machine Stability
  16. Induction Machines
  17. Starting of Induction Motors
  18. Armature Windings
  19. Transformers

1. Magnetic Circuits

The section contains multiple choice questions and answers on singly exicted magnetic systems and energy conversion principles.

  • Principle of Energy Conversion
  • Singly Excited Magnetic Systems
  • 2. Basic Concepts in Rotating Machines

    The section contains questions and answers on reluctance motor, synchronous motors, singly and doubly excited systems, torque production, rotating machines terms and rotating magnetic field.

  • Reluctance Motor
  • Doubly Excited Magnetic Systems
  • Elementary Synchronous Machines
  • Singly Excited Electric Field Systems
  • Torque Production and Dynamic Equations
  • Terms Pertaining to Rotating Machines
  • Rotating Magnetic Field – 1
  • Rotating Magnetic Field – 2
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    3. Constructional Features of Rotating Electrical Machines

    The section contains MCQs on constructional features of rotating electrical machines.

  • Features of Rotating Electrical Machines-1
  • Features of Rotating Electrical Machines-2
  • Features of Rotating Electrical Machines-3
  • 4. Principles of Electro mechanical Energy Conversions

    The section contains multiple choice questions and answers on generated emfs.

  • Generated Emfs
  • 5. Rating and Loss Dissipation

    The section contains questions and answers on losses and efficiency, machine ratings and loss dissipation.

  • Losses and Efficiency – 1
  • Losses and Efficiency – 2
  • Machine Ratings
  • Cooling(Loss Dissipation)
  • 6. Electrical Machine Applications/Armature Reaction and Commutation

    The section contains MCQs on machine applications and action of commutator.

  • Machine Applications
  • Action of Commutator
  • 7. Electromechanical Energy Conversions

    The section contains multiple choice questions and answers on emf generation in armature and torque in dc machines.

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  • EMF Generated in the Armature
  • Torque in DC Machines
  • 8. DC Machines

    The section contains questions and answers on dc machine applications and its circuit models, mmf and flux density waveforms in dc machines, methods of excitation, efficiency and testing of dc machines.

  • Circuit Model of DC Machines
  • Methods of Excitation
  • MMF and Flux Density Waveforms in DC Machines
  • Effect of Brush Shift and Compensation Windings
  • Efficiency and Testing of DC Machines
  • DC Machine Applications
  • 9. DC Generators

    The section contains MCQs on rotating amplifiers and operating characteristics of dc generators.

  • Operating Characteristics of DC Generators
  • Rotating Amplifiers
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    10. DC Motors

    The section contains multiple choice questions and answers on characteristics of dc motors and speed control of dc motors, pmdc and dc motor starting.

  • Operating Characteristics of DC Motors
  • DC Motor Starting
  • Speed Control of DC Motors
  • Permanent Magnet DC (PMDC) Motors
  • 11. Synchronous Machines

    The section contains questions and answers on physical concepts, Emf Polygons, power angle and power factor control of synchronous machines, excitation systems for synchronous machines, flux and mmf phasors in synchronous machines,synchronous machine applications and measurement of xd and xq.

  • EMF Polygon – 1
  • EMF Polygon – 2
  • Production of Torque in Non-Salient Pole Machines
  • MMF Produced by Distributed Windings
  • Excitation Systems for Synchronous Machines
  • Physical Concepts of Synchronous Machine Operation
  • Power Factor Control of Synchronous Machines
  • Two Reaction Theory of Salient Pole Machines
  • Power Angle Characteristics of Synchronous Machines
  • Measurement of Xd and Xq
  • Synchronous Machine Applications
  • 12. Synchronous Generators

    The section contains MCQs on characteristics of alternators, phasor diagram of a cylindrical rotor alternator and also voltage regulation of an alternator.

  • Phasor Diagram of a Cylindrical Rotor Alternator
  • Voltage Regulation of an Alternator
  • Operating Characteristics of Alternators and their Ratings
  • 13. Synchronous Motors

    The section contains multiple choice questions and answers on synchronous motor phasor diagram, starting of synchronous motors and power factor correction.

  • Synchronous Motor Phasor Diagram
  • Power Factor Correction by Synchronous Motors
  • Starting of Synchronous Motors
  • 14. Efficiency and Regulation

    The section contains questions and answers on power flow through an inductive impedance, losses and efficiency of synchronous machines.

  • Power Flow Through an Inductive Impedance – I
  • Power Flow Through an Inductive Impedance – II
  • Efficiency of Synchronous Machines
  • Losses and Efficiency
  • 15. Synchronous Machine Stability

    The section contains MCQs on synchronizing power and synchronizing torque, hunting and damper windings and synchronous machine stability.

  • Synchronizing Power and Synchronizing Torque
  • Synchronous Machine Stability
  • Hunting and Damper Windings
  • 16. Induction Machines

    The section contains multiple choice questions and answers on principles of operations, rotor frequency, equivalent circuit and its analysis, induction motor phasor diagram and its operating characteristics, induction generator, circle diagrams of induction machines, flux, mmf phase and waves in induction motors.

  • Induction Motor as a Transformer
  • Principle of Operation
  • Flux and MMF Phasors and Waves in Induction Motors
  • Rotor Frequency
  • Rotor EMF, Current and Power
  • Induction Motor Phasor Diagram
  • Equivalent Circuit
  • Analysis of the Equivalent Circuit
  • Operating Characteristics of Induction Motors
  • Determination of Equivalent Circuit Parameters
  • Power Factor Control of Three Phase Induction Motors
  • Induction Generator
  • Applications of Polyphase Induction Motors
  • Circle Diagrams of Induction Machines
  • 17. Starting of Induction Motors

    The section contains questions and answers on starting of polyphase induction motors.

  • Starting of Polyphase Induction Motors-I
  • Starting of Polyphase Induction Motors-II
  • 18. Armature Windings

    The section contains MCQs on armature windings.

  • Armature Windings
  • 19. Transformers

    The section contains multiple choice questions and answers on transformer construction and phasor diagram, open circuit and short circuit test, voltage regulation of transformer, transformer losses and its efficiency, autotransformers, single phase transformer, three phase transformer and ideal two winding transformer.

  • Transformer Construction
  • Ideal Two Winding Transformer
  • Transformer Phasor Diagram
  • Equivalent Circuit of Transformer
  • EMF Induced in Transformer
  • Open Circuit and Short Circuit Test
  • Voltage Regulation of Transformer
  • Transformer Losses and Efficiency
  • Parallel Operation of Single Phase Transformers
  • Transformer as a Magnetically Coupled Circuit
  • Three Phase Transformers
  • Autotransformers
  • If you would like to learn "Electrical Machines" thoroughly, you should attempt to work on the complete set of 1000+ MCQs - multiple choice questions and answers mentioned above. It will immensely help anyone trying to crack an exam or an interview.

    Wish you the best in your endeavor to learn and master Electrical Machines!

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    Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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