Electrical Machines If the mechanical angle α between the stator and rotor poles increases, then the stator current None of above. Decreases. Increases. Remains unchanged. None of above. Decreases. Increases. Remains unchanged. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC cumulatively compounded motor delivers rated load torque at rated speed. If the series field is short-circuited, then the armature current and speed will both decrease increase and decrease respectively decrease and increase respectively both increase both decrease increase and decrease respectively decrease and increase respectively both increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The teeth in the armature of a DC machines are sometimes skewed. This is done to reduce hysteresis loss. vibrations. eddy electric current loss. copper loss. hysteresis loss. vibrations. eddy electric current loss. copper loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the frequency of input voltage of a transformer is increased keeping the magnitude of voltage unchanged, then Ph will increase but Pe will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Pe will increase but Ph will decrease Ph will decrease but Pe will remain same Ph will increase but Pe will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Pe will increase but Ph will decrease Ph will decrease but Pe will remain same ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loss will depends on f³ f1.6 f f² f³ f1.6 f f² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase 6 pole 50 Hz induction motor is running at 5% slip.What is the speed of the motor? 1000 rpm 900 rpm 950 rpm 850 rpm 1000 rpm 900 rpm 950 rpm 850 rpm ANSWER DOWNLOAD EXAMIANS APP
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