Electrical Machines In a DC Shunt Motor the speed can be increased by Decreasing the field current. Increasing the armature current. Increasing the field current. Increasing the field current. Decreasing the field current. Increasing the armature current. Increasing the field current. Increasing the field current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the developed torque DC Series Motor having armature resistance of 0.2 Ω and taking armature current of 60 A is connected to 250 V supply. Considered brush drop of 1 V each. cant be determined. 266.20 N-m. 234.76 N-m. 133.22 N-m cant be determined. 266.20 N-m. 234.76 N-m. 133.22 N-m ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines φA DC shunt machine generates 250 V on open circuit at 1000 RPM. Armature resistance is 0.5 Ω, field resistance 250 Ω. When running as a motor takes 4 A at 250 V. Calculate the speed when running as a motor taking 40 A at 250 V. Armature reaction weakens the field by 4%. 970 RPM 940 RPM 920 RPM 960 RPM 970 RPM 940 RPM 920 RPM 960 RPM ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature voltage control is considered suitable for a DC motor driven at constant power. speed. current. torque. power. speed. current. torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following generators negative voltage regulation can occur? shunt generator over compound generator both B and C series generators shunt generator over compound generator both B and C series generators ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Rotating magnetic field is produced in an induction motor because of either stator winding or rotor winding. None of these rotor winding. stator winding. either stator winding or rotor winding. None of these rotor winding. stator winding. ANSWER DOWNLOAD EXAMIANS APP
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