Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? S 1/S 1/(1-S) 1-S S 1/S 1/(1-S) 1-S ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of conductor of a DC motor can be determined by Lenz's law. Fleming's left hand rule. Ampere law. Fleming's right hand rule. Lenz's law. Fleming's left hand rule. Ampere law. Fleming's right hand rule. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The demagnetising component of armature reaction in a DC generator results in sparking trouble. increases armature speed. reduces generator emf. reduces inter poles flux density. results in sparking trouble. increases armature speed. reduces generator emf. reduces inter poles flux density. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 2 pole, 12 slot synchronous machine is operating at synchronous speed. Find the slot angle? 20° 18° 60° 30° 20° 18° 60° 30° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eb/V ratio of a DC motor is an indication of Effiency. Starting torque. Running Torque. Speed regulation. Effiency. Starting torque. Running Torque. Speed regulation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3-phase induction motor, torque and supply voltage are related as T ∝ V T ∝ 1/V T ∝ 1/V² T∝ V² T ∝ V T ∝ 1/V T ∝ 1/V² T∝ V² ANSWER DOWNLOAD EXAMIANS APP
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