Electrical Machines When a DC cummulative compound wound motor is loaded Torque and speed both increase. Torque decrease and speed increases. Torque increase and speed decrease. Both torque and speed decrease. Torque and speed both increase. Torque decrease and speed increases. Torque increase and speed decrease. Both torque and speed decrease. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The polarity of a DC generator can be reversed by increasing field current. reversing the field current. reversing field electric current as well as direction of rotation. any of above. increasing field current. reversing the field current. reversing field electric current as well as direction of rotation. any of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flux density under leading pole tips in case of generator will either increase or decrease decrease None of these increase either increase or decrease decrease None of these increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A lap wound DC machine has 400 conductors and 8 poles. The voltage induced per conductor is 2 volts. The machine generates a voltage of 800 V. 400 V. 100 V. 200 V. 800 V. 400 V. 100 V. 200 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutator pitches of duplex and simplex lap windings are respectively 4 ang 1 2 and 2 2 and 1 4 and 2 4 ang 1 2 and 2 2 and 1 4 and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Addition of 0.3 % to 4.5 % silicon to iron reduces the saturation magnetization. increases the electrical resistivity of iron. None of these increases the hysteresis loss. reduces the saturation magnetization. increases the electrical resistivity of iron. None of these increases the hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS