A. number of armature coils
B. number of armature coil sides
C. number of armature conductors
D. number of armature turns
A. demagnetisation only
B. cross magnetisation as well as mag¬netisation
C. crossmagnetisation as well as demagnetising
D. cross magnetisation only
A. zero
B. about 2 V
C. about 50 V
D. 220 V
A. length of conductor
B. cross-sectional area of the conductor
C. number of conductors
D. all of the above
A. will be less than 250 V
B. will always be 250 V
C. may be greater or less than 250 V
D. none of the above
A. to reduce the reluctance of the mag¬netic path
B. to spread out the flux to achieve uniform flux density
C. to support the field coil
D. to discharge all the above functions
A. mainly to reduce the eddy currents by providing local short-circuits
B. to provide path for the circulation of cooling air
C. to neutralise the cross-magnetising effect of the armature reaction
D. none of the above