Electrical Machines – I Important Questions – EM – I Imp Qusts

Electrical Machines – I Important Questions Pdf file – EM – I Imp Qusts

Please find the attached pdf file of Electrical Machines – I Important Questions Bank – EM- 1 Imp Qusts

Link – EM-I Question Bank

UNIT-I

Electromechanical Energy Conversion

  1. Write the expressions of energy stored in capacitor and inductor
  2. Define Fleming’s right hand rule
  3. On what factors, the EMF induced in a coil rotating in a magnetic field is depending?

For more questions please download the above Pdf file

UNIT-II
D.C. Generators & Armature Reaction

  1. What is the necessity of laminating the armature core of a DCgenerator?
  2. What do you mean by “back e.m.f” in DC Machine?
  3. Mention the types of armature winding and their specifications.

For more questions please download the above Pdf file

UNIT-III
Types of D.C Generators & Load Characteristics

  1. Mention the three important characteristics of a DC generator.
  2. What are magnetic saturation and residual magnetism in DC generators?
  3. Draw the external characteristics of series wound DC generator.

For more questions please download the above Pdf file

UNIT-1V
D.C. Motors & Speed Control Methods

  1. Would you list out the types of DC generators based on field connections?
  2. Write the expression for speed of DC motor in terms of number of conductors, supply voltage and armature current?
  3. Show that, armature torque developed by motor is proportional to number poles and armature current.

For more questions please download the above Pdf file

UNIT-V
Testing of D.C. Machines

  1. Mention the various losses that occur in DCmachines?
  2. Write down mechanical efficiency and electrical efficiency expressions in terms of Eg & Ia, for DC generator?
  3. What is the condition for maximum efficiency of any DC machine?

For more questions please download the above Pdf file

Check Also

Try Out this Eamcet Rank College Predictor | Eamcet Mock Counselling 2018

Eamcet College Wise Closing Ranks, Eamcet Web Counselling 2018 | Engineering College Counselling Telangana Engineering, …

Leave a Reply

Your email address will not be published. Required fields are marked *