Electrical Machines Find the developed torque DC Series Motor having armature resistance of 0.2 Ω and taking armature current of 60 A is connected to 250 V supply. Considered brush drop of 1 V each. 234.76 N-m. 133.22 N-m cant be determined. 266.20 N-m. 234.76 N-m. 133.22 N-m cant be determined. 266.20 N-m. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loss is proportional to f. f3. f1.5. f2. f. f3. f1.5. f2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutators in DC machines have a role of which converts Both AC to DC and DC to AC. none of these. AC to DC. high voltage DC to low voltage DC. Both AC to DC and DC to AC. none of these. AC to DC. high voltage DC to low voltage DC. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor has a rotor resistance of 0.002 Ω / phase. If the resistance is increased to 0.004 Ω / phase then the maximum torque will remain unaltered increase by 200% increase by 100% reduced to half remain unaltered increase by 200% increase by 100% reduced to half ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dummy coils are used for mechanical balancing. reducing armature reaction. All of these increasing efficiency. mechanical balancing. reducing armature reaction. All of these increasing efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If field current is decreased in shunt dc motor, the speed of the motor decreases. increases. remains same. None of these decreases. increases. remains same. None of these ANSWER DOWNLOAD EXAMIANS APP
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