As compared to an induction motor, the air gap in a D.C. motor is? Mark as favorite Copy Link less than 50% between 50% and 90% same more Check Answer
Which of the following motor has the poorest speed regulation? Mark as favorite Copy Link Shunt motor Series motor Differential compound motor Cumulative compound motor Check Answer
For a D.C. shunt motor if the excitation is changed? Mark as favorite Copy Link torque will remain constant torque will change but power will remain constant torque and power both will change torque, power and speed, all will change Check Answer
Which of the following motors have almost constant speed over their full load range? Mark as favorite Copy Link AC. series motors Low resistance squirrel cage motors D.C. shunt motors Both (b) and (c) Check Answer
If the no-voltage release of a D. C. Motor starter fails to work on resumption of supply after a break, the motor will? Mark as favorite Copy Link not start automatically start automatically without trouble get damaged develop very low torque Check Answer
The ratio of starting torque to full load torque is least in case of? Mark as favorite Copy Link series motor shunt motors compound motors none of the above Check Answer
The armature torque of the D.C. shunt motor is proportional to? Mark as favorite Copy Link field flux only armature current only both (a) and (b) none of the above Check Answer
In a D.C. series motor if the armature current is reduced by 50%, the torque of the motor will be equal to? Mark as favorite Copy Link 100% of the previous value 50% of the previous value 25% of the previous value 10% of the previous value Check Answer
If a D.C. motor is to be selected far conveyors which motor Would be preferred? Mark as favorite Copy Link Series motor Shunt motor Differentially compound motor Cumulative compound motor Check Answer
In case of conductively compensated DC series motors, the compensating winding is provided? Mark as favorite Copy Link as separately wound unit in parallel with armature winding in series with armature winding in parallel with field winding Check Answer