Electrical Machines In a synchronous motor, damper windings are provided on None of these pole faces. stator frame. rotor shaft. None of these pole faces. stator frame. rotor shaft. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Stray losses in transformer occurs in paper insulation in transformers. steel core. winding conductors and steel structures of transformer. transformer insulating oil. paper insulation in transformers. steel core. winding conductors and steel structures of transformer. transformer insulating oil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Generator works on the principle of production both A and B. dynamically induced emf. None of these static induced emf. both A and B. dynamically induced emf. None of these static induced emf. 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 1, 3, 5 2, 4 ,5 1, 4 2, 3 , 5 1, 3, 5 2, 4 ,5 1, 4 2, 3 , 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 50Hz, 4 pole induction motor is running at 1440 rpm and rotor input power is 2KW. Find the rotor output power? 1820W 1920W 1450W 2000W 1820W 1920W 1450W 2000W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor has synchronous speed of 1500 rpm. What will be the slip when it is running at a speed of 1450 rpm? -3% -3.33% +3% +3.33% -3% -3.33% +3% +3.33% ANSWER DOWNLOAD EXAMIANS APP
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