Q41. The interpole winding in a dc machine is

Q42. If the applied voltage to a DC motor is 220 V, then the back emf for maximum power developed is

Q43. A 230 V motor has an armature circuit resistance of 0.8 ohms. If the full load armature current is 25 A, Find the amount of back EMF induced in the armature.

Q44. A 4-pole DC machine has          magnetic circuits.

Q45. The purpose of using the dummy coil in a dc machine is to

Q46. In D. C. machine it is preferable to place armature winding on rotor to……..

Q47. If armature reaction is neglected in a DC shunt motor, its Torque versus armature current characteristic is ________.

Q48. Armature current of a DC motor                    as speed of motor increases.

Q49. As the load is increased the speed of DC shunt motor will_________________.

Q50. One of the following experiments is carried out at no-load.