A. 100 A
B. 200 A
E. 300 A
D. 400 A
In a D.C. machine the current per brush arm should not be more than_____________? Read More »
Electrical Machine Design A. 4 mm
B. 6 mm
C. 8 mm
D. 10 mm
In D.C. machines the width of the duct is usually_____________? Read More »
Electrical Machine Design A. increase
B. decrease
C. either of the above
D. none of the above
A. Increase in length of air gap at pole tips
B. Increasing reluctance of pole tips
C. Compensating windings
D. Interpoles
E. All of the above
A. between 2 to 4
B. between 6 to 8
C. between 9 to 16
D. between 20 to 30
In D.C. machines the number of slots per pole usually lies___________? Read More »
Electrical Machine Design A. 5 percent
B. 10 percent
C. 15 percent
D. 30 percent
E. none of the above
A. equal to 50 kVA
B. equal to 100 kVA
C. above 200 kVA
D. none of the above
Power transformers have rating_______________? Read More »
Electrical Machine Design A. Closed windings
B. Open windings
C. Either of the above
D. None of the above
____________are always double layer type? Read More »
Electrical Machine Design A. duplex winding
B. triplex winding
C. forced winding
D. none of the above
The winding where dummy coils are used is sometimes called______________? Read More »
Electrical Machine Design A. short pitch
B. full pitch
C. either of the above
D. none of the above
