Electrical Machines In which of the following speed control of DC motor the speed obtained is below than the rated speed? Armature voltage control. Any of above. Field resistance control. Armature circuit resistance control. Armature voltage control. Any of above. Field resistance control. Armature circuit resistance control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-φ alternator has negligible stator resistance. A short circuit test is conducted on this alternator. At a particular speed, a field current of If1 is required to drive the rated armature current. If the speed of the alternator is reduced to half, the field current required to maintain rated armature current Woud be equal to 2If1. Would be equal to If1/2. Cannot be predicted due to insufficient data. Would be equal to If1. Woud be equal to 2If1. Would be equal to If1/2. Cannot be predicted due to insufficient data. Would be equal to If1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Number of tappings for each equalizer ring is equal to number of parallel paths. number of commutator segments. number of poles. number of pole pairs. number of parallel paths. number of commutator segments. number of poles. number of pole pairs. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The wound rotor type IM is used for____________ speed operation. maximum. minimum. variable. constant. maximum. minimum. variable. constant. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Number of slip rings in 3-phase synchronous motor will be 0 3 or 4 2 1 0 3 or 4 2 1 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines We can apply source transformation to voltage source when a resistance is connected to it in 13 HP. 15 HP. 14 HP. 10 HP. 13 HP. 15 HP. 14 HP. 10 HP. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS