Electrical Machines A synchronous machine has P number of poles, find the relation between electrical angular momentum (ωe) and mechanical angular momentum (ωm)? ωe = 2/P*ωm ωe = P/2*ωm ωe = P*ωm ωe = ωm ωe = 2/P*ωm ωe = P/2*ωm ωe = P*ωm ωe = ωm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Number of tappings for each equalizer ring is equal to number of commutator segments. number of poles. number of pole pairs. number of parallel paths. number of commutator segments. number of poles. number of pole pairs. number of parallel paths. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Torque angle of a synchorous machine operating from a constant voltage bus is usually defined as the space angle between Stator mmf wave and resultant flux density. Rotor mmf wave and resultant flux density wave. Stator mmf wave and resultant mmf wave. Rotor mmf wave and stator mmf wave. Stator mmf wave and resultant flux density. Rotor mmf wave and resultant flux density wave. Stator mmf wave and resultant mmf wave. Rotor mmf wave and stator mmf wave. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Crawling in an induction motor is due to insufficient starting torque. space harmonics produced by winding currents. slip ring rotor. time harmonics in supply. insufficient starting torque. space harmonics produced by winding currents. slip ring rotor. time harmonics in supply. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Voltage regulation can be determined by which of the following? MMf method. Synchronous impedance method. All of these ZPF method. MMf method. Synchronous impedance method. All of these ZPF method. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature mmf in a dc machine is 1. stationary with respect to field poles 2. stationary with respect to armature 3. rotating with respect to field poles 4. rotating with respect to armature From these, the correct answer is 1, 4 2, 3 1, 3 2, 4 1, 4 2, 3 1, 3 2, 4 ANSWER DOWNLOAD EXAMIANS APP
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