Electrical Machines In travelling cranes for swing action which motor is preferred? DC series motor. Reluctance motor. Capacitor type induction motors. AC slip ring IM. DC series motor. Reluctance motor. Capacitor type induction motors. AC slip ring IM. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a seperately excited DC Motor if field current is increased, it will Reduce starting torque. Increase acceleration duration. Increase speed Reduce armature heating. Reduce starting torque. Increase acceleration duration. Increase speed Reduce armature heating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC generators has rising V-I characteristics? Series. None of them. Shunt. Compound. Series. None of them. Shunt. Compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A motor armature conductor of length 0.5 m is exposed to a flux density of 4 Wb / m2. Calculate the force experienced by the conductor, when the armature current is 5 Amp? Can't be determined. 20 N. None of these. 15 N. Can't be determined. 20 N. None of these. 15 N. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous generator a synchronous dead load (lamp, furnaces etc) has no ____________ hence it has no natural frequency of oscillation. synchronizing power co efficient. mechanical rotatory system. damping torque. restoring torque. synchronizing power co efficient. mechanical rotatory system. damping torque. restoring torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Unbalance 3 - Φ stator currents cause double frequency currents in the rotor. All of these heating of rotor. vibrations. double frequency currents in the rotor. All of these heating of rotor. vibrations. ANSWER DOWNLOAD EXAMIANS APP
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