Electrical Machines The power flow of a dc motor, with respect to a DC generator is modified. none of these. reversed. increased. modified. none of these. reversed. increased. 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 90° coincide with the GNA shift forward by more than 90° shift forward by less than 90° shift forward by 90° coincide with the GNA shift forward by more than 90° shift forward by less than 90° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under which of the following conditions is a dc motor provided with compensating winding used ? 1. Wide range of speed control above normal 2. Wide range of steady load variation with no speed control 3.Wide range of rapid variation in load Select the correct answer using the codes given below : Codes : 2 and 3 1, 2 and 3 1 and 2 1 and 3 2 and 3 1, 2 and 3 1 and 2 1 and 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines On what factors the speed of dc motor depends? Armature current Ia. All of these. Field flux. Applied voltage. Armature current Ia. All of these. Field flux. Applied voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, full form of MNA is what? Magnetically no-load armature co-ordinate. Magnetic no-load axis. Magnetic neutral armature co-ordinate. Magnetic neutral axis. Magnetically no-load armature co-ordinate. Magnetic no-load axis. Magnetic neutral armature co-ordinate. Magnetic neutral axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tappings of a transformer are provided at the phase end of hv side at the middle of hv side at the neutral side end of hv side at the phase end of lv side at the phase end of hv side at the middle of hv side at the neutral side end of hv side at the phase end of lv side ANSWER DOWNLOAD EXAMIANS APP
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