Electrical Machines – II Imp Qusts Pdf file – EM-II Important Questions Pdf file

Electrical Machines – II Imp Qusts Pdf file – EM-II Important Questions Pdf file

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

Link – EM-II Question Bank

UNIT-I
SINGLE PHASE TRANSFORMERS

  1. Mention the differences between core and shell type transformers.
  2. Give the emf equation of a transformer and define each term
  3. What are the applications of step-up & step-down transformer?

For more questions please download the above Pdf file

UNIT-II
TESTING OF TRANSFORMERS

  1. Define voltage regulation of a transformer. What causes a change in secondary terminal voltage of transformer as it is loaded?
  2. Does the transformer draw any current when secondary is open
  3. Differentiate a classical transformer with an auto transformer.

For more questions please download the above Pdf file

UNIT-III
AUTO AND POLY PHASE TRANSFOMRMERS

  1. What is an auto transformer?
  2. A 3-phase transformer over a bank of 3-single phase transformers of equal
    rating, has the advantage of what?
  3. The percentage capacity of V-V bank compared to delta – delta is?

For more questions please download the above Pdf file

UNIT-1V
POLY-PHASE INDUCTION MOTORS

  1. In a 3 – phase induction motor running at slip ‘s’ the mechanical power
    developed in terms of input power P2 is.
  2. What do you mean by AC three-phase induction motor?
  3. On what principle does the induction motor work?

For more questions please download the above Pdf file

UNIT-V
CIRCLE DIAGRAM AND SPEED CONTROL OF INDCUTION MOTORS

  1. What are the advantages of auto transformer starting?
  2. What are the advantages of slip ring Im over squirrel cage IM?
  3. What is meant by cascade operation?

For more questions please download the above Pdf file

 

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