Which motor has the poorest speed control? Mark as favorite Copy Link Differentially compounded motor Cumulatively compounded motor Shunt motor Series motor Check Answer
According to Fleming’s left-hand-rule, when the forefinger points in the direction of the field or flux, middle finger wilt point in the direction of? Mark as favorite Copy Link current in the conductor movement of conductor resultant force on conductor none of the above Check Answer
ln case-the conditions for maximum power for a D.C. motor I are established, the efficiency of the motor will be? Mark as favorite Copy Link 100% around 99% anywhere between 75% and 90% less than 50% Check Answer
Which D.C. motor will preferred, for machine tools? Mark as favorite Copy Link Series motor Shunt motor Cumulative compound motor Differential compound motor Check Answer
At the instant of starting when a D.C. motor is put on supply, it behaves like? Mark as favorite Copy Link a highly resistive circuit a low resistance circuit a capacitive circuit none of the above Check Answer
For starting a D.C. motor a starter is. required because? Mark as favorite Copy Link it limits the speed of the motor it limits the starting current to a safe value it starts the rotor none of the above Check Answer
The speed of a D.C. motor can be varied by varying? Mark as favorite Copy Link field current applied voltage resistance in series with armature any of the above Check Answer
A direct on line starter is used for starting motors? Mark as favorite Copy Link up to 5 H.P. up to 10 H.P. up to 15 H.P. up to 20 H.P. Check Answer
In a manual shunt motor starter? Mark as favorite Copy Link over load relay is connected in series and no volt relay in parallel with the load over load relay is connected in parallel and no volt relay in series with the load over load relay and no volt relay are both connected in series with the load over load relay and no volt relay are both connected in parallel with the load Check Answer
By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor? Mark as favorite Copy Link Frame Shaft Commutator Stator Check Answer