Electrical Machines In DC machine torque is proportional to which of the following? flux(φ) both A and B armature current(Ia) None of these flux(φ) both A and B armature current(Ia) None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole DC generator runs at 750 rpm and generate an emf of 240 V. The armature is wave wound and has 792 conductors. If the total flux from each pole is 0.0145 Wb. What is the leakage co-efficient? 1.8. 1.5. 1.2. 1.4. 1.8. 1.5. 1.2. 1.4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC Shunt Motor electromagnetic torque developed is Proportional to the square of armature current. Proportional to the armature current. None of above. Inversely proportional to the armature current. Proportional to the square of armature current. Proportional to the armature current. None of above. Inversely proportional to the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tappings of a transformer are provided at the middle of hv side at the phase end of hv side at the phase end of lv side at the neutral side end of hv side at the middle of hv side at the phase end of hv side at the phase end of lv side at the neutral side end of hv side ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature resistance control method is used for the _______ ? None of these below rated speed above rated speed both 1 and 2 None of these below rated speed above rated speed both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the space distribution of air-gap flux density wave at no load is sinusoidal rectangular co- sinusoidal flat-topped sinusoidal rectangular co- sinusoidal flat-topped ANSWER DOWNLOAD EXAMIANS APP