Electrical Machines What is the phase difference between two windings of A.C servomotor ? 60°. 30°. 120°. 90°. 60°. 30°. 120°. 90°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of these types of motor is self starting? None of these. Poly-phase synchronous machine. Single phase induction motor. Poly-phase induction motor. None of these. Poly-phase synchronous machine. Single phase induction motor. Poly-phase induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If starting current of a 3 - Φ induction motor is 5 times the rated current, while rated slip is 4 %, then ratio of starting torque to full load torque is 0.6. 1. 0.8. 0.4. 0.6. 1. 0.8. 0.4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Reversing the direction of rotation of split phase motors is done by All of these reversing the terminals of starting winding. reversing the terminals of main winding. interchanging the capacitor from starting winding to main winding or vice versa. All of these reversing the terminals of starting winding. reversing the terminals of main winding. interchanging the capacitor from starting winding to main winding or vice versa. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction effect is more in which of the following methods? same in both methods field weakening method armature resistance control None of these same in both methods field weakening method armature resistance control None of these 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 lap-winding ? PZL/4Sa² PZL/4SP² PZL/4S PZL/ 4Sa PZL/4Sa² PZL/4SP² PZL/4S PZL/ 4Sa ANSWER DOWNLOAD EXAMIANS APP