Electrical Machines In normal dc machines operating at full-load conditions, the most powerful electromagnet is field winding interpole winding armature winding interpole and compensating windings together field winding interpole winding armature winding interpole and compensating windings together ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two 3-phase AC generators are such that one has twice the linear dimensions of the other. The field windings of each are excited to give identical sinusoidal air-gap flux density waveform. Both have the same number of stator slots and identical winding patterns. The conductor/slot in a big generator is K times that of the smaller one. The value of K to get equal no load voltage at same frequency is 1/4. 1/2. 8. 4. 1/4. 1/2. 8. 4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following DC Motor the ratio of starting torque to full load torque is minimum? Shunt motor. Differential compound motor. Cumulative compound motor. Series motor. Shunt motor. Differential compound motor. Cumulative compound motor. Series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A short-shunt cumulatively-compounded dc generator builds up a voltage of 220 V at no load at rated speed. If it is operated as a differentially compounded generator, other things remaining the same, it would build up somewhat less than 220 V 220 V 6 V more than 220 V somewhat less than 220 V 220 V 6 V more than 220 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When two DC series motors are connected in parallel, the resultant speed is less than normal speed. more than normal speed. normal speed. zero. less than normal speed. more than normal speed. normal speed. zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a DC cummulative compound wound motor is loaded Torque increase and speed decrease. Both torque and speed decrease. Torque and speed both increase. Torque decrease and speed increases. Torque increase and speed decrease. Both torque and speed decrease. Torque and speed both increase. Torque decrease and speed increases. ANSWER DOWNLOAD EXAMIANS APP
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