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Electrical Machine Design

Which of the following is the major consideration to evolve a good design?

December 3, 2021October 10, 2020 by admin
Which of the following is the major consideration to evolve a good design?A. Cost
B. Durability
C. Compliance with performance criteria as laid down in specifications
D. All of the above

Categories Electrical Engineering Mcqs, Electrical Machine Design

The input impedance of a JFET is _____________that of an ordinary transistor?

August 11, 2021December 22, 2018 by admin
The input impedance of a JFET is _____________that of an ordinary transistor?

A. equal to
B. less than
C. more than
D. none of the above

Categories Electrical Machine Design

The cold rolled grain oriented steel has _________ permeability in the direction of the grain orientation?

August 11, 2021December 22, 2018 by admin
The cold rolled grain oriented steel has _________ permeability in the direction of the grain orientation?

A. minimum
B. maximum
C. nil
D. none of the above

Categories Electrical Machine Design

Cylindrical windings using circular conductors, employed in transformers, are_____________?

August 11, 2021December 22, 2018 by admin
Cylindrical windings using circular conductors, employed in transformers, are_____________?

A. single layered
B. double layered
C. multi-layered
D. none of the above

Categories Electrical Machine Design

Multi-layer helical windings are commonly used in the transformers as high voltage windings_______________?

August 11, 2021December 22, 2018 by admin
Multi-layer helical windings are commonly used in the transformers as high voltage windings_______________?

A. upto 20 kV
B. upto 50 kV
C. upto 80 kV
D. for 110 kV and above

Categories Electrical Machine Design

The cold rolled grain oriented steel has ___________ permeability in the direction of the grain orientation?

August 11, 2021December 22, 2018 by admin
The cold rolled grain oriented steel has ___________ permeability in the direction of the grain orientation?

A. minimum
B. maximum
C. nil
D. none of the above

Categories Electrical Machine Design

Helical windings are used in________________?

August 11, 2021December 22, 2018 by admin
Helical windings are used in________________?

A. distribution transformers
B. power transformers
C. shell type transformers
D. none of the above

Categories Electrical Machine Design

Disc windings are primarily used in_____________-?

August 11, 2021December 22, 2018 by admin
Disc windings are primarily used in_____________-?

A. short capacity transformers
B. medium capacity transformers
C. high capacity transformers
D. any of the above

Categories Electrical Machine Design

The forced oil and air circulation method is usual one for transformers of capacities____________?

August 11, 2021December 22, 2018 by admin
The forced oil and air circulation method is usual one for transformers of capacities____________?

A. upto 5 MVA
B. upto 10 MVA
C. upto 20 MVA
D. 30 MVA upwards

Categories Electrical Machine Design

The heat dissipating capability of transformers of ratings higher than 30 kVA in increased by providing which of the following ?

August 11, 2021December 22, 2018 by admin
The heat dissipating capability of transformers of ratings higher than 30 kVA in increased by providing which of the following ?

A. Corrugations
B. Fins
C. Tubes
D. Radiator tanks
E. All of the above

Categories Electrical Machine Design
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