Electrical Machines In synchronous generator, inverted V curve is drawn between field current on Y-axis and armature current on X-axis field current on X-axis and armature current on Y-axis field current on Y-axis and power factor on X-axis field current on X-axis and power factor on Y-axis field current on Y-axis and armature current on X-axis field current on X-axis and armature current on Y-axis field current on Y-axis and power factor on X-axis field current on X-axis and power factor on Y-axis ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature shaft must be able to with stand All of these Any unbalanced magnetic pull on the armature core. Bending moment due to weight of the armature. Twisting stains due to transmission of torque. All of these Any unbalanced magnetic pull on the armature core. Bending moment due to weight of the armature. Twisting stains due to transmission of torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which method is less recommendable for induction motor starting in the industries? Auto transformer starting. Direct online starting. Stator resistance starting. Rotor resistance starting. Auto transformer starting. Direct online starting. Stator resistance starting. Rotor resistance starting. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? 1/S 1-S S 1/(1-S) 1/S 1-S S 1/(1-S) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole dc motor with armature winding resistance of 0.6 ohm receives a supply of 230 Volt. If the back emf produced during running condition is equal to 210 volt. Calculate the current flowing through the armature at this point. 33.33 Amp. 44.47 Amp. 29 Amp. 43 Amp. 33.33 Amp. 44.47 Amp. 29 Amp. 43 Amp. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The no load and full load speed of DC mototr are 1400 rpm and 1200 rpm respectively. What is the percentage speed regulation of the motor? 14.28%. 18.25%. 16.67%. 15.30%. 14.28%. 18.25%. 16.67%. 15.30%. ANSWER DOWNLOAD EXAMIANS APP
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