Electrical Machines A 250 V DC generator in run at rated speed with no excitation. The open circuit voltage will be zero. 250 V. about 100 V. very small, say about 2 or 3 V. zero. 250 V. about 100 V. very small, say about 2 or 3 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole generator with 16 coil has a two layer lap winding. The pole pitch is 16. 32. 8. 4. 16. 32. 8. 4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The oscillation in a synchronous motor can be damped out by oscillation cannot be damped. providing damper bars in the rotor pole faces. maintaining constant excitation. running the motor on leading power factors. oscillation cannot be damped. providing damper bars in the rotor pole faces. maintaining constant excitation. running the motor on leading power factors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Shunt Motor if the load current increases keeping the terminal voltage constant, then flux will any of the above. remain constant. decrease. increase. any of the above. remain constant. decrease. increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature core of the rotor bars of dc motors are laminated to reduce mechanical losses. to reduce hysteresis loss. to provide better flux linkage. to reduce eddy current loss. to reduce mechanical losses. to reduce hysteresis loss. to provide better flux linkage. to reduce eddy current loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole lap wound dc generator has 4 brushes, if one of the brush is damaged, what will be the change in V, I and P ratings V/2, I/2 and P/4 V, I and P V/2, I and P/2 V, I/2 and P/2 V/2, I/2 and P/4 V, I and P V/2, I and P/2 V, I/2 and P/2 ANSWER DOWNLOAD EXAMIANS APP
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