Electrical Machines Eb/V ratio of a DC motor is an indication of Effiency. Running Torque. Starting torque. Speed regulation. Effiency. Running Torque. Starting torque. Speed regulation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For successful parallel operation of two single phase transformers, the most essential condition is that their turn- ratios are exactly equal KVA ratings are equal polarities are properly connected percentage impedances are equal turn- ratios are exactly equal KVA ratings are equal polarities are properly connected percentage impedances are equal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous generator a synchronous dead load (lamp, furnaces etc) has no ____________ hence it has no natural frequency of oscillation. damping torque. restoring torque. synchronizing power co efficient. mechanical rotatory system. damping torque. restoring torque. synchronizing power co efficient. mechanical rotatory system. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor during DC rheostatic braking is 2 - s. 1 - s. s. 2 + s. 2 - s. 1 - s. s. 2 + s. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods are used to control the speed of DC motors is supply voltage control All of these armature circuit resistance control field current control supply voltage control All of these armature circuit resistance control field current control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the pitch factor? Cos (α/2) Cos α Cos α² sin (α/2) Cos (α/2) Cos α Cos α² sin (α/2) ANSWER DOWNLOAD EXAMIANS APP
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