Electrical Machines If residual magnetism of a shunt generator is destroyed accidentally it may be restored by connecting its shunt field to a DC source. in reverse. to earth. to an AC source. to a DC source. in reverse. to earth. to an AC source. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the space waveform of the air-gap flux distribution affects voltage but not the torque both the torque and voltage torque but not the voltage neither the voltage nor the torque voltage but not the torque both the torque and voltage torque but not the voltage neither the voltage nor the torque ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ IM in order to eliminate cogging the number of stator slots must be equal to number of rotor slots. either (B) or (C). an integral multiple of number of rotor slots. unequal to number of rotor slots and skewed in shape. equal to number of rotor slots. either (B) or (C). an integral multiple of number of rotor slots. unequal to number of rotor slots and skewed in shape. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Demagnetization effects which of the following? reduction in main field flux both B and C commutation reduces the terminal voltage reduction in main field flux both B and C commutation reduces the terminal voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc motor with armature resistance of 0.5 ohms connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is 460 A. 340 A. 570 A. 250 A. 460 A. 340 A. 570 A. 250 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an alternator the voltage generated per phase is proportional to frequency of waveform. All of these flux per pole. number of turns in coil. frequency of waveform. All of these flux per pole. number of turns in coil. ANSWER DOWNLOAD EXAMIANS APP
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