Electrical Machines In synchronous generator a synchronous dead load (lamp, furnaces etc) has no ____________ hence it has no natural frequency of oscillation. damping torque. restoring torque. mechanical rotatory system. synchronizing power co efficient. damping torque. restoring torque. mechanical rotatory system. synchronizing power co efficient. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Select the motor that should not be started on no load? Shunt motor. Series motor. Brushless DC motor. Compound motor. Shunt motor. Series motor. Brushless DC motor. Compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a step down transformer which one of the following statements is true? Secondary power is less than primary power. Number of secondary turns is more than that of primary. Secondary current is less than primary current. Number of secondary turns is less than primary turns. Secondary power is less than primary power. Number of secondary turns is more than that of primary. Secondary current is less than primary current. Number of secondary turns is less than primary turns. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous motor is supplying a load at unity power factor. If the load on the motor is increased keeping its excitation and terminal voltage constant, the power factor will become leading will become lagging will remain the same None of these will become leading will become lagging will remain the same None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC generators are usually designed to develop armature voltages not exceeding 650 V because of the limitations imposed by commutator starters armature winding field winding commutator starters armature winding field winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the temperature of armature resistance is increased, the speed of a series motor would None of above. increase. not change. decrease. None of above. increase. not change. decrease. ANSWER DOWNLOAD EXAMIANS APP
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