A. front pitch
B. winding pitch
C. commutator pitch
D. back pitch
A. small machines
B. large machines
C. either A. or B.
D. none of the above
Dummy coil should not be used in_________________? Read More »
Electrical Machine Design A. at one-fourth load
B. at one-half load
C. at or near full load
D. any of the above
Power transformers should be designed to have maximum efficiency________________? Read More »
Electrical Machine Design A. small capacity transformers
B. medium capacity transformers
C. large capacity transformers
D. any of the above
Yokes with rectangular cross-section are used for_______________? Read More »
Electrical Machine Design A. Equivalent current method
B. Equivalent power method
C. Equivalent torque method
D. Method of average losses
Which of the following methods is most accurate ? Read More »
Electrical Machine Design A. Soft magnetic materials
B. Hard magnetic materials
C. Either A. or B.
D. None of the above
____________are used for construction of core of electromagnets? Read More »
Electrical Machine Design A. a.c. supply
B. d.c. supply
C. either a.c. or d.c. supply
D. none of the above
Tractive magnets are operated from____________? Read More »
Electrical Machine Design A. Flat-faced armature type
B. Horse shoe type
C. Flat-faced plunger type
D. All of the above
Which of the following is the commonly used type of electromagnets ? Read More »
Electrical Machine Design A. Force equation
B. Magnetic circuit equation
C. Heating equation
D. Voltage equation
E. All of the above
A. Tractive
B. Portative
C. Either of the above
D. None of the above
electromagnets generally function as holding magnets ? Read More »
Electrical Machine Design