Latest Electrical Motors Questions and Answers
How do the new IE efficiency classes compare with the old EFF efficiency classes? The new IS: 12615-2011 defines the following efficiency classes of low-voltage three phase asynchronous motors in...
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Electrical Machines Questions and Answers
Lap winding is suitable for high current and low voltage generators while wave winding is suitable for high voltage and low current generators. >Lap winding is suitable for high current...
Electrical Machines Short Answers
1. Why almost all large size Synchronous machines are constructed with rotating field system type? The following are the principal advantages of the rotating field system type construction of Synchronous...
Questions and Answers in Electrical Machines
[1] What is an ideal transformer? The ideal transformer should have the following properties: It has no losses Its windings have zero resistance It should have zero leakage flux (100%...
Electrical Machines Interview Questions and Answers
[1] Why is the efficiency of a three-phase Induction Motor is less than that of a three-phase Transformer? Three phase Induction motor is nothing but a rotating transformer. Due to...
Autotransformers
In this MCQ you can learn and practice Autotransformers objective quiz questions to test your knowledge on electrical machines....
Three Phase Transformers
In this MCQ you can learn and practice Three Phase Transformers objective quiz questions to test your knowledge on electrical machines....
Transformer Losses and Efficiency
In this MCQ you can learn and practice Transformer Losses and Efficiency objective quiz questions to test your knowledge on electrical machines....
Transformer Open Circuit and Short Circuit Test
In this MCQ you can learn and practice Transformer Open Circuit and Short Circuit Test objective quiz questions to test your knowledge on electrical machines....
Transformer Construction
In this MCQ you can learn and practice Transformer Construction objective quiz questions to test your knowledge on electrical machines....