Electrical Machines The speed regulation of a DC motor is given as NnL/NfL. NnL − NfL. (NfL − NnL)/NnL. (NnL − NfL)/NfL. NnL/NfL. NnL − NfL. (NfL − NnL)/NnL. (NnL − NfL)/NfL. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field winding connection of DC shunt motor is changed motor will not run. It will run in same direction. It will run in opposite direction. motor will become slow. motor will not run. It will run in same direction. It will run in opposite direction. motor will become slow. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3-phase induction motor, if the supply voltage and frequency are reduced by the same ratio, then slip at which maximum torque occurs is less and maximum torque decreases less and maximum torque increases more and maximum torque remains constant more and maximum torque decreases less and maximum torque decreases less and maximum torque increases more and maximum torque remains constant more and maximum torque decreases ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor wound rotor motor is mainly is used in application where high starting torque. less costly motor is not required. power factor is less. low starting torque. high starting torque. less costly motor is not required. power factor is less. low starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Poles of DC machine are often laminated to reduce iron weight. reduce armature reaction. reduce pulsation loss. dissipate more heat. reduce iron weight. reduce armature reaction. reduce pulsation loss. dissipate more heat. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Wave winding is employed in DC machine of high current and low voltage rating. low current and high voltage rating. high current and low voltage rating. low current and low voltage rating. high current and low voltage rating. low current and high voltage rating. high current and low voltage rating. low current and low voltage rating. ANSWER DOWNLOAD EXAMIANS APP
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