Electrical Machines In dc machines, the space distribution of air-gap flux density wave at no load is flat-topped rectangular sinusoidal co- sinusoidal flat-topped rectangular sinusoidal co- sinusoidal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature core of a DC machine is laminated to minimise hysteresis loss mechanical loss eddy-current loss temperature rise hysteresis loss mechanical loss eddy-current loss temperature rise 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 474 V 240 V 6 V 234 V 474 V 240 V 6 V 234 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following DC generator will be in a position to build up without any residual magnetism in the field? Shunt. Series. Separately excited. Compound. Shunt. Series. Separately excited. Compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single phase, 2 KV alternator has an armature resistance of 0.8 ohms and 4.94 ohms respectively. The voltage regulation of the alternator at 100 a load 0.8 loading power factor is 14%. 0%. 8.9%. 7%. 14%. 0%. 8.9%. 7%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a step down transformer which one of the following statements is true? Number of secondary turns is more than that of primary. Number of secondary turns is less than primary turns. Secondary current is less than primary current. Secondary power is less than primary power. Number of secondary turns is more than that of primary. Number of secondary turns is less than primary turns. Secondary current is less than primary current. Secondary power is less than primary power. ANSWER DOWNLOAD EXAMIANS APP
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