Electrical Machines If the applied voltage of a DC motor is 230 V, then back emf, for maximum power developed is 460 V. 230 V. 115 V. 200 V. 460 V. 230 V. 115 V. 200 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Normally for the design of transformer the ambient temperature is taken as 32°C. 35°C. 27°C. 45°C. 32°C. 35°C. 27°C. 45°C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The residual magnetism of a self-excited dc generator is lost. To build up its emf again the field winding must be replaced the field winding connection must be reversed field winding must be excited by low voltage dc supply the armature connection must be reversed the field winding must be replaced the field winding connection must be reversed field winding must be excited by low voltage dc supply the armature connection must be reversed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, lap winding is used in where constant speed is required. high current and low voltage applications. where greater load is connected. high voltage and low current applications. where constant speed is required. high current and low voltage applications. where greater load is connected. high voltage and low current applications. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 4 pole IM is supplied from a 50 Hz source. Calculate rotor frequency when rotor runs 600 rpm? Can be determined. 35 Hz. 30 Hz. 20 Hz. Can be determined. 35 Hz. 30 Hz. 20 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward Leonard control is provides speed control Below rated speed. Above rated speed. In one direction only. In both direction. Below rated speed. Above rated speed. In one direction only. In both direction. ANSWER DOWNLOAD EXAMIANS APP
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