Electrical Machines A 3 - Φ, 400 / 200 V, Y - Y connected wound rotor induction motor has 0.06 Ω rotor resistance and 0.3 Ω standstill reactance per phase. To make the starting torque equal to maximum torque of the motor the additional resistance required 0.24 Ω. 0.78 Ω. 0.66 Ω. 0.45 Ω. 0.24 Ω. 0.78 Ω. 0.66 Ω. 0.45 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The emf induced in the dc generator armature winding is AC and DC AC None of these DC AC and DC AC None of these DC ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net voltage across the armature resistance at the time of plugging will be 234 V 240 V 474 V 6 V 234 V 240 V 474 V 6 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The material used for commutator brushes is mostly mica. copper. carbon. cast iron. mica. copper. carbon. cast iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the developed torque DC Series Motor having armature resistance of 0.2 Ω and taking armature current of 60 A is connected to 250 V supply. Considered brush drop of 1 V each. 234.76 N-m. 266.20 N-m. cant be determined. 133.22 N-m 234.76 N-m. 266.20 N-m. cant be determined. 133.22 N-m ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC motor can be determent by Amperes law. Flemings right hand rule. Lenzs law. Flemings left hand rule. Amperes law. Flemings right hand rule. Lenzs law. Flemings left hand rule. ANSWER DOWNLOAD EXAMIANS APP
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