Electrical Machines The field divertor resistance for a DC series motor is of order of 50 Ω 0.1 Ω 100 Ω 10 Ω 50 Ω 0.1 Ω 100 Ω 10 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Variation in speed by ward-Leonard control of DC motors occurs due to variation in Supply voltage. Armature voltage. Armature current. Field excitaion. Supply voltage. Armature voltage. Armature current. Field excitaion. 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. low current and low voltage rating. high current and low voltage rating. high current and low voltage rating. low current and high voltage rating. low current and low voltage rating. high current and low voltage rating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For which of the following loads, armature reaction is magnetizing in nature? pure inductive load pure resistive load pure capacitive load None of these pure inductive load pure resistive load pure capacitive load None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC motors are stopped by opening line switches and not by forcing the handle of the motor starter back to OFF position. This is due to occurance of None of these. Both of above. Heavy sparking at brushes. Heavy sparking at the first stud of starting resistance steps. None of these. Both of above. Heavy sparking at brushes. Heavy sparking at the first stud of starting resistance steps. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For standing a DC motor a starter is required because None of these it limits the speed of the motor. It starts the motor. it limits the starting current to a safe value. None of these it limits the speed of the motor. It starts the motor. it limits the starting current to a safe value. ANSWER DOWNLOAD EXAMIANS APP
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