16) The shunt field of a compound generator is connected across both the series field and the armature. This connection is known as :

long shunt

short shunt

differential compound

cumulative compound

Answer is:

long shunt

MNA (magnetic neutral axis)

GNA (geometric neutral axis)

perpendicular to MNA

perpendicular to GNA

Answer is:

reactance voltage generated as a consequence of commutation

cross-magnetising the effect of armature reaction

demagnetising effect of armature reaction

all the above

Answer is:

rate of change of flux is minimum

rate of change of flux is maximum

flux linked with conductors is maximum

flux linked with conductors is minimum

Answer is:

to increase the resistance of brushes

to reduce the no. of turns in the armature coil so as to reduce the no. of commutator segments

to neutralise the reactance voltage by producing a reversing e.m.f. in the short-circuited coil under commutation

all the above

Answer is: