Electrical Machines The speed regulation of a DC motor is given as (NnL − NfL)/NfL. NnL/NfL. NnL − NfL. (NfL − NnL)/NnL. (NnL − NfL)/NfL. NnL/NfL. NnL − NfL. (NfL − NnL)/NnL. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the effect of armature reaction ? Armature flux distorts the main field flux. Armature flux weakens the main field flux. None of the options. Both option B and C. Armature flux distorts the main field flux. Armature flux weakens the main field flux. None of the options. Both option B and C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which motors are preferred for refrigeration and air conditioning in smaller units? Reluctance motors. Induction motors. Stepper motors. Universal motors. Reluctance motors. Induction motors. Stepper motors. Universal motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Wave winding is employed in DC machine of 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. high current and low voltage rating. low current and high voltage rating. high current and low voltage rating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flux density under leading pole tips in case of generator will None of these increase either increase or decrease decrease None of these increase either increase or decrease decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature resistance of the dc motor is generally of the range 0.1 ohm. 0.5 ohm. 50 ohm. 100 ohm. 0.1 ohm. 0.5 ohm. 50 ohm. 100 ohm. ANSWER DOWNLOAD EXAMIANS APP
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