Electrical Machines The speed of stator rotating magnetic field (RMF) with respect to rotor is Ns Nr Zero S.Ns Ns Nr Zero S.Ns ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two generators operating in parallel with rating 50MW and 100MW respectively. Both their respective governor settings are identical as 4%, consider same no load frequency. How will the machine share a common load of 100 MW 66.67 MW and 33.33 MW respectively any of the above 50 MW and 50 MW respectively 33.33 MW and 66.67 MW respectively 66.67 MW and 33.33 MW respectively any of the above 50 MW and 50 MW respectively 33.33 MW and 66.67 MW respectively ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating winding are used to rectify the flux density waveform at region under main pole. throughout the air gap. None of these interpole region. region under main pole. throughout the air gap. None of these interpole region. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods of speed control is not affected through stator side? Change of supply voltage. Change of supply frequency. Change of rotor resistance. Change of number of pole. Change of supply voltage. Change of supply frequency. Change of rotor resistance. Change of number of pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following generators are used in arc welding? differential compound generators series generators cumulative compound generators shunt generators differential compound generators series generators cumulative compound generators shunt generators ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V, DC shunt motor is operating at a speed of 1440 rpm. The armature resistance is 1.0 Ω and armature current is 10 A. of the excitation of the machine is reduced by 10%, the extra resistance to be put in the armature circuit to maintain the same speed and torque will be 1.79 Ω 1.8 9 Ω 2 .1 Ω 3.1 Ω 1.79 Ω 1.8 9 Ω 2 .1 Ω 3.1 Ω ANSWER DOWNLOAD EXAMIANS APP
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