Electrical Machines What is power factor of a 3 - φ induction motor at no load? High. Low. Equal to 1. Same as full load. High. Low. Equal to 1. Same as full load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC Motor for constant load torque, what will happen to the armature current if armature resistance increases? None of above. Decreases. Remain unchanged Increases. None of above. Decreases. Remain unchanged Increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The field divertor resistance for a DC series motor is of order of 50 Ω 0.1 Ω 10 Ω 100 Ω 50 Ω 0.1 Ω 10 Ω 100 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Conservator tank is used to take up the expansion of oil due to temperature rise. to act as an oil storage. None of these for better cooling of transformer. to take up the expansion of oil due to temperature rise. to act as an oil storage. None of these for better cooling of transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a resistance split phase motor, what is the range of torque angle? 90° 0° 25° to 30° 70° to 85° 90° 0° 25° to 30° 70° to 85° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If s is the slip and f is the supply frequency of an induction motor, the frequency of rotor current is given by sf. sf / 2. s2. f / s. sf. sf / 2. s2. f / s. ANSWER DOWNLOAD EXAMIANS APP
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