Computer Programming MCQs

5739 MCQs  (Page 260 of 574)

Yokes with rectangular cross-section are used for_______________?
A. Small capacity transformers
B. Medium capacity transformers
C. Large capacity transformers
D. Any of the above
Power transformers should be designed to have maximum efficiency________________?
A. At one-fourth load
B. At one-half load
C. At or near full load
D. Any of the above
Dummy coil should not be used in_________________?
A. Small machines
B. Large machines
C. Either a. or b.
D. None of the above
The winding where dummy coils are used is sometimes called______________?
A. Duplex winding
B. Triplex winding
C. Forced winding
D. None of the above
____________are always double layer type?
A. Closed windings
B. Open windings
C. Either of the above
D. None of the above
Power transformers have rating_______________?
A. Equal to 50 kva
B. Equal to 100 kva
C. Above 200 kva
D. None of the above
In D.C. machines the number of slots per pole usually lies___________?
A. Between 2 to 4
B. Between 6 to 8
C. Between 9 to 16
D. Between 20 to 30