Electrical Machines What happens if fifth multiples of harmonics is given to induction motor? It will rotates in reverse direction. Either short circuit or open circuit occurs. It will rotates in normal operation. Fail to start. It will rotates in reverse direction. Either short circuit or open circuit occurs. It will rotates in normal operation. Fail to start. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the load current and the flux of a DC motor are held constant and voltage applied across its armature is increased by 5%, the speed of the motor will increase by 5 %. remain unchanged. depend on other factors. reduce by 5 %. increase by 5 %. remain unchanged. depend on other factors. reduce by 5 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A lap wound 4 pole dc motor has 460 conductors. Find the number of parallel paths between the conductors? 6. 2. 4. data provided is insufficient. 6. 2. 4. data provided is insufficient. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum allowable tan - delta (tanδ) of dielectric dispassion factor of power transformer insulating oil is generally taken as 3 at 90°C. 0.5 at 90°C. 1 at 90°C. 2 at 90°C. 3 at 90°C. 0.5 at 90°C. 1 at 90°C. 2 at 90°C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For P pole machine relation between electrical degrees and mechanical degrees is θelec = 2/P*θmech θelec = θmech θelec = P/2*θmech θelec = 4/P*θmech θelec = 2/P*θmech θelec = θmech θelec = P/2*θmech θelec = 4/P*θmech ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature resistance control method is used for the _______ ? above rated speed below rated speed None of these both 1 and 2 above rated speed below rated speed None of these both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
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