Electrical Machines A 3 phase stepper motor has 6 stator poles and 4 rotor poles, then find the step angle? 10° 30° 45° 60° 10° 30° 45° 60° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines which of the following type of brush and their application is/are correct carbon brush → normal ratings electro graphite → large ratings All of these copper graphite → low voltage high current density carbon brush → normal ratings electro graphite → large ratings All of these copper graphite → low voltage high current density ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following motors DC excitation is not required? hysteresis motor reluctance motor 3-phase synchronous generator 3-phase synchronous motor hysteresis motor reluctance motor 3-phase synchronous generator 3-phase synchronous motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is true for an AC synchronous motor? It is a constant speed motor. It is a variable speed motor. It is a high reluctance motor. It is a step angled motor. It is a constant speed motor. It is a variable speed motor. It is a high reluctance motor. It is a step angled motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC machine having P no of pole pairs, Z no of conductors having length L of resistivity ρ and cross section S are arranged. what is the armature resistance for simple wave-winding ? PZL/4S PZL/4Sa² PZL/4Sp² PZL/ 4Sa PZL/4S PZL/4Sa² PZL/4Sp² PZL/ 4Sa ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the load current and the flux of a DC motor are held constant and voltage applied across its armature is increased by 5%, the speed of the motor will remain unchanged. reduce by 5 %. depend on other factors. increase by 5 %. remain unchanged. reduce by 5 %. depend on other factors. increase by 5 %. ANSWER DOWNLOAD EXAMIANS APP
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