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For the lower values of current, round conductors would be convenient to use.
Answer: a Explanation: For lower values of current, round conductors would be the most convenient to use while for higher current bars. It should be less than This set of Design of Electrical Machines Multiple Choice Questions & Answers (MCQs) focuses on “Types of Synchronous Machines”.
Answer: a Explanation: For lower values of current, round conductors would be the most convenient to use while for higher current bars. It should be less than
This set of Design of Electrical Machines Multiple Choice Questions & Answers (MCQs) focuses on “Types of Synchronous Machines”.
See lessWhat should be the range of current density in the stator windings?
Answer: c Explanation: The minimum value for the current density in stator winding is 3 A per mm2 . The maximum value of the current density in the stator windings should not exceed 5 A per mm2 .
Answer: c
Explanation: The minimum value for the current density in stator winding is 3 A per mm2 . The maximum value of the current density in the stator windings should not exceed 5 A per mm2 .
See lessWhat is the formula for stator turns per phase?
Answer: c Explanation: For the finding out of stator turns per phase, first the stator voltage per phase is obtained. Next, the maximum flux is calculated, then the stator winding factor is calculated.
Answer: c
Explanation: For the finding out of stator turns per phase, first the stator voltage per phase is obtained. Next, the maximum flux is calculated, then the stator winding factor is calculated.
See lessWhat is the initial assumption for the value of winding factor?
Answer: b Explanation: The winding factor may be initially assumed as 0.955. It is the value of winding factor for infinitely distributed winding with full pitch coils.
Answer: b
Explanation: The winding factor may be initially assumed as 0.955. It is the value of winding factor for infinitely distributed winding with full pitch coils.
See lessWhat is the formula for flux per pole?
Answer: a Explanation: First the average magnetic flux is calculated. Then the pole pitch is calculated and then the length of the pole is calculated.
Answer: a
See lessExplanation: First the average magnetic flux is calculated. Then the pole pitch is
calculated and then the length of the pole is calculated.
What class does the plastic foil baked with polyamide fibres belong to?
Answer: c Explanation: The modern insulating materials for diamond coils belong to classes E, B, and F. The plastic foil baked with polyamide fibres belong to class F.
Answer: c
See lessExplanation: The modern insulating materials for diamond coils belong to classes E, B, and F. The plastic foil baked with polyamide fibres belong to class F.
What class does the slot and phase insulation belong to?
Answer: d Explanation: The modern insulating materials for diamond coils belong to class E, B and F. The slot and phase insulation is Polyester foil coated with compressed fibre for Class E.
Answer: d
Explanation: The modern insulating materials for diamond coils belong to class E, B and F. The slot and phase insulation is Polyester foil coated with compressed fibre for Class E.
See lessWhat type of winding is made use of small motors?
Answer: a Explanation: Small motors consisting of small number of slots have a large number of turns per phase. These small motors use single layer mush windings.
Answer: a
Explanation: Small motors consisting of small number of slots have a large number of turns per phase. These small motors use single layer mush windings.
See lessWhat type of winding is generally used for the stators?
Answer: b Explanation: The double layer wave winding is generally used for stators. The wave winding is with diamond coils is used for stators.
Answer: b
Explanation: The double layer wave winding is generally used for stators. The wave winding is with diamond coils is used for stators.
See lessHow much does the addition iron losses relate with the supplied power?
Answer: a Explanation: The additional iron losses are a small amount when compared with the supplied power. They are 0.5% of the supplied power.
Answer: a
Explanation: The additional iron losses are a small amount when compared with the supplied power. They are 0.5% of the supplied power.
See less