In a D.C. machine stray loss is the sum of_____________?
A. total copper loss and mechanical loss
B. armature copper loss and iron loss
C. shunt field copper loss and mechanical loss
D. iron loss and mechanical loss
A. total copper loss and mechanical loss
B. armature copper loss and iron loss
C. shunt field copper loss and mechanical loss
D. iron loss and mechanical loss
A. rising voltage characteristics
B. identical voltage characteristics
C. droog voltage characteristics
D. linear voltage characteristics
A. electromagnets
B. permanent magnets
C. both A. and B.
D. none of the above
A. high voltage, high current
B. low voltage, high current
C. high voltage, low current
D. low voltage, low current
A. brushes
B. field
C. armature
D. load
A. identified by the scarring of the commutator segment to which open circuited coil is connected
B. indicated by a spark completely around the commutator
C. both A. and (b)
D. none of the above
A. crossmagnetising
B. demagnetising
C. magnetising
D. none of above