Electrical Machine Design Mcqs
Q.1: Which of the following is the major consideration to evolve a good design?J
A. Cost
B. Durability
C. Compliance with performance criteria as laid down in specificationsC
D. All of the above
Q.2: The input impedance of a JFET is _____________that of an ordinary transistor?M
A. equal to
B. less than
C. more than
D. none of the above
Q.3: The cold rolled grain oriented steel has _________ permeability in the direction of the grain orientation?j
A. minimum
B. maximum
C. nil
D. none of the above
Q.4: Cylindrical windings using circular conductors, employed in transformers, are_____________?[
A. single layered
B. double layered
C. multi-layered
D. none of the above
Q.5: Multi-layer helical windings are commonly used in the transformers as high voltage windings_______________?k
A. upto 20 kV
B. upto 50 kV
C. upto 80 kV
D. for 110 kV and above
Q.6: The cold rolled grain oriented steel has ___________ permeability in the direction of the grain orientation?l
A. minimum
B. maximum
C. nil
D. none of the above
Q.7: Helical windings are used in________________?-
A. distribution transformers
B. power transformers
C. shell type transformers
D. none of the above
Q.8: Disc windings are primarily used in_____________-?2
A. short capacity transformers
B. medium capacity transformers
C. high capacity transformers
D. any of the above
Q.9: The forced oil and air circulation method is usual one for transformers of capacities____________?b
A. upto 5 MVA
B. upto 10 MVA
C. upto 20 MVA
D. 30 MVA upwards
Q.10: 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

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