Electrical Machines For standing a DC motor a starter is required because None of these it limits the speed of the motor. it limits the starting current to a safe value. It starts the motor. None of these it limits the speed of the motor. it limits the starting current to a safe value. It starts the motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the maximum power factor of an induction motor for dispersion coefficient of 0.05? 20. 0.905. 0.05. 1.1. 20. 0.905. 0.05. 1.1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Direct-on-line (DOL) starters are not suitable for starting large DC motors, because the starting current will be enormously high. the starting torque becomes low. the motor may run away. the motor may not start. the starting current will be enormously high. the starting torque becomes low. the motor may run away. the motor may not start. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The type of DC motor generally used for shears and punches is Series motor. Shunt motor. Cummulative compound motor. Differential compound motor. Series motor. Shunt motor. Cummulative compound motor. Differential compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine, the armature windings are placed on the rotor because of necessity for generation of voltage. electromechanical energy conversion. commutation. development of torque. generation of voltage. electromechanical energy conversion. commutation. development of torque. 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%. 960 RPM 920 RPM 940 RPM 970 RPM 960 RPM 920 RPM 940 RPM 970 RPM ANSWER DOWNLOAD EXAMIANS APP
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