Electrical Machines The armature MMF waveform of a DC machine is sinusoidal. triangular. rectangular. pulsating. sinusoidal. triangular. rectangular. pulsating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : 1. interpole windings are connected in series with armature windings 2. polarity of interpoles must be the same as that of the main poles in advance 3. distortion of the main field under the pole shoes is not affected by the use of interpoles From above, the correct answer is 1 and 2 1 and 3 2 and 3 1 alone 1 and 2 1 and 3 2 and 3 1 alone ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which DC motor will have least percentage increase of input current, for the same percentage increase in the torque DC Series Motor Separately Excited DC Motor Compound Wound DC Motor DC Shunt Motor DC Series Motor Separately Excited DC Motor Compound Wound DC Motor DC Shunt Motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of these types of motor is self starting? None of these. Poly-phase synchronous machine. Poly-phase induction motor. Single phase induction motor. None of these. Poly-phase synchronous machine. Poly-phase induction motor. Single phase induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC 4 pole lap wound generator is running at 1000 rpm having 1200 conductors and flux density is 10 mwb. find the generated emf? 20V 200V 10V 100V 20V 200V 10V 100V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Rotor resistance speed control is used in squirrel cage induction motor. synchronous motor. dc shunt motor. slip ring induction motor. squirrel cage induction motor. synchronous motor. dc shunt motor. slip ring induction motor. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS