11) The rotational speed of a d.c. shunt motor can be increased above its full speed by :

increasing the armature current

decreasing the armature current

increasing the field current

decreasing the field current

Answer is:

decreasing the field current

remain constant

increase proportionately

increase slightly

reduce slightly

Answer is:

the applied e.m.f.

the torque required

the flux required

the speed of the motor

Answer is:

the power drawn in kVa

the power drawn in kW

the output power available at the shaft

the gross power

Answer is:

its losses are minimum

its current drainage is minimum

the applied e.m.f. is minimum

the load is minimum

Answer is: