Electrical Machines In synchronous generator a synchronous dead load (lamp, furnaces etc) has no ____________ hence it has no natural frequency of oscillation. restoring torque. synchronizing power co efficient. damping torque. mechanical rotatory system. restoring torque. synchronizing power co efficient. damping torque. mechanical rotatory system. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC series motor the speed is ______________ proportional to the armature current. inversely. none of these. has no relation. directly. inversely. none of these. has no relation. directly. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a DC motor is connected across the AC supply it will Run at normal speed. Run at lower speed. Burn. Not run. Run at normal speed. Run at lower speed. Burn. Not run. 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 lagging will become leading None of these will remain the same will become lagging will become leading None of these will remain the same ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In travelling cranes for swing action which motor is preferred? AC slip ring IM. Capacitor type induction motors. Reluctance motor. DC series motor. AC slip ring IM. Capacitor type induction motors. Reluctance motor. DC series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of induction motors the ratio of length to pole pitch for minimum cost, is taken as 1.5 to 2. 3 to 5. 2 to 3. 1.0. 1.5 to 2. 3 to 5. 2 to 3. 1.0. ANSWER DOWNLOAD EXAMIANS APP
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