Electrical Machines To eliminate the 5th harmonic in the induced voltages their respective pitch factor angle should be 18° 30° 72° 36° 18° 30° 72° 36° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc generator operating on load with its brushes on the geometrical neutral axis (GNA), the magnetic neutral axis (MNA) is shifted in the direction of rotation. Now, if the brushes are given a lead of 90° (electrical), then the MNA will shift forward by less than 90° shift forward by 90° shift forward by more than 90° coincide with the GNA shift forward by less than 90° shift forward by 90° shift forward by more than 90° coincide with the GNA ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Shunt Motor if the load current increases then field flux decreases remains constant. increases. decreases. decreases remains constant. increases. decreases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase induction motor driving a fan load, the reason for having a high resistance rotor is to achieve quick acceleration. reduced size. high efficiency. low starting torque. quick acceleration. reduced size. high efficiency. low starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The ventilating ducts in most of DC machine are none of these. radial. longitudinal. radial as well as longitudinal. none of these. radial. longitudinal. radial as well as longitudinal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If B is flux density, l the length of the conductor and v the velocity of the conductor, then emf is given by Blv. Blv2. Bl2v. Bl2v2. Blv. Blv2. Bl2v. Bl2v2. ANSWER DOWNLOAD EXAMIANS APP
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