A. mica
B. copper
C. cast iron
D. carbon
A. graphite
B. paper
C. mica
D. insulating varnish
A. lie under south pole
B. lie under north pole
C. lie under interpolar region
D. are farthest from the poles
A. demagnetisation only
B. cross magnetisation as well as mag¬netisation
C. crossmagnetisation as well as demagnetising
D. cross magnetisation only
A. crossmagnetising
B. demagnetising
C. magnetising
D. none of above
A. to avoid sudden loading of the primemover
B. to avoid mechanicaljerk to the shaft
C. to avoid burning of switch contacts
D. all above
A. oscillating magnetic field
B. pulsating magnetic flux
C. relative rotation between field and armature
D. all above
A. wave wound
B. lap wound
C. delta wound
D. duplex wound
A. lap winding
B. wave winding
C. delta winding
D. duplex wave winding