A. ball bearings
B. bush bearings
C. magnetic bearmgs
D. needle bearings
A. any even number of conductors
B. any odd number of conductors
C. that even number which is exact multiple of poles + 2
D. that even number which is exact multiple of poles
A. external resistance = internal char-acteristic – armature reaction
B. internal characteristic = magnetisation characteristic – ohmic drop
C. external characteristic = magnetisation characteristic – ohmic drop – armature reaction
D. magnetisation characteristic = external characteristic
A. to supply traction load
B. to supply industrial load at constant voltage
C. voltage at the toad end of the feeder
D. for none of the above purpose
A. along neutral axis
B. along field axis
C. in any of the above positions
D. in none of the above positions
A. series generator
B. shunt generator
C. long shunt compound generator
D. any of’the above
A. magnetic flux, direction of current flow and resultant force
B. magnetic flux, direction of motion and the direction of e.m.f. induced
C. magnetic field strength, induced voltage and current
D. magnetic flux, direction of force and direction of motion of conductor