Electrical Machines The output power of a dc motor is given by EIa. none of these. EbIa2. EbIa. EIa. none of these. EbIa2. EbIa. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 2 pole, 12 slot synchronous machine is operating at synchronous speed. Find the slot angle? 60° 20° 18° 30° 60° 20° 18° 30° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The brushes of a DC machine should be placed on the commutator in the polar axis. commutator in the inter polar axis. armature in the polar axis. armature midway between poles. commutator in the polar axis. commutator in the inter polar axis. armature in the polar axis. armature midway between poles. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Series generators are used in which of the following applications? All of these Used as boosters in dc distribution or transmission. Air crafts. Arc welding. All of these Used as boosters in dc distribution or transmission. Air crafts. Arc welding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements regarding dc machines : 1. possible resistance of shunt-field winding is 1 Ω 2. possible resistance of series-field winding is 1 Ω 3. electrographite brushes are used for 230 V, 10 A machines 4. Copper-graphite brushes are used for 230 V, 10 A machines 5. Possible armature-circuit resistance is 1 Ω From these, the correct statements are 2, 4 ,5 1, 4 2, 3 , 5 1, 3, 5 2, 4 ,5 1, 4 2, 3 , 5 1, 3, 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the increase in the torque expressed as percentage of initial torque, if current drawn by the dc series motor is increased from 10A to 11A? 21% 41% 11% 10% 21% 41% 11% 10% ANSWER DOWNLOAD EXAMIANS APP
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