Electrical Machines The no load and full load speed of DC motor are 1400 rpm and 1200 rpm respectively. What is the percentage speed regulation of the motor ? 15.30%. 18.25%. 16.67%. 14.28%. 15.30%. 18.25%. 16.67%. 14.28%. 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% +3.33% -3.33% -3% +3% +3.33% -3.33% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The low voltage winding of a 400/230 V single phase 50 Hz transformer is to be connected to keep the magnetization current at the same level in both the cases the voltage at 25 Hz should be 460 V 65 V 230 V 115 V 460 V 65 V 230 V 115 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The efficiency of a transformer is mainly dependent on core losses. copper losses. dielectric losses. stray losses. core losses. copper losses. dielectric losses. stray losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hopkinson test is conducted under which of the following condition? no load full load half load any of the above no load full load half load any of the above ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction effect is more in which of the following methods? armature resistance control same in both methods field weakening method None of these armature resistance control same in both methods field weakening method None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS