Electrical Machines The commutator segments of DC machines are made up of copper copper alloy hard-drawn copper brass copper copper alloy hard-drawn copper brass ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the number of poles required, when the frequency is 50Hz and speed of the motor is 500 rpm? 10 24 5 12 10 24 5 12 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The flux involved in the emf equation of a transformer has maximum value. average value. total value. rms value. maximum value. average value. total value. rms value. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, full form of MNA is what? Magnetic no-load axis. Magnetic neutral axis. Magnetically no-load armature co-ordinate. Magnetic neutral armature co-ordinate. Magnetic no-load axis. Magnetic neutral axis. Magnetically no-load armature co-ordinate. Magnetic neutral armature co-ordinate. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a DC cummulative compound wound motor is loaded Torque increase and speed decrease. Torque and speed both increase. Both torque and speed decrease. Torque decrease and speed increases. Torque increase and speed decrease. Torque and speed both increase. Both torque and speed decrease. Torque decrease and speed increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The oscillation in a synchronous motor can be damped out by maintaining constant excitation. oscillation cannot be damped. providing damper bars in the rotor pole faces. running the motor on leading power factors. maintaining constant excitation. oscillation cannot be damped. providing damper bars in the rotor pole faces. running the motor on leading power factors. ANSWER DOWNLOAD EXAMIANS APP
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