500 rpm की गति से चलने वाले एक 12-ध्रुव (12-pole) अल्टरनेटर की आवृत्ति (frequency) क्या होगी?

If the no-load voltage of a generator is 210 V and its full-load rated voltage is 200 V, what is its voltage regulation percentage?

Calculate the number of poles of a synchronous motor operating at a synchronous speed of 1200 rpm with a supply frequency of 60 Hz.

A 3-phase induction motor operating under unbalanced voltage conditions experiences a voltage unbalance factor of 3%. What is the approximate percentage increase in rotor heating/current compared to balanced voltage operation?

A 4-pole DC machine has 400 armature conductors and a wave winding. What is the number of parallel paths in the armature winding?

A 50 Hz, bar primary current transformer has a secondary winding with 500 turns. If the core flux is 45 μWb, calculate the approximate secondary induced voltage.

Find the short pitch angle of an electrical machine winding in degrees, where the coil span is 7 slots and the pole pitch is 9 slots.

A three-phase, 4-pole induction motor generates a maximum torque at a slip of 15%, whereas it delivers the rated full-load torque at a slip of 3%. Find the value of maximum torque if the full-load torque is 100 N-m.

For a six-pole alternator, the slip frequency is half of the supplied frequency of 50 Hz. The rotor will be rotating with a speed of (in rpm):