A 3-phase motor is rated 750 HP at 460 volts line to line, 0.85 pf lagging and 0.95 efficiency. Solve for the rated current.                 (a). 869.64 A                           (b). 702.23 A                 (c). 405.43 A                           (d). 917.32 A

32. An alternator requires an alternating current of 2.1 A to produce on short circuit its full-load current of 50 A. The same on open-circuit an emf of 320 V. The armature resistance is 1Ohms . Find the full-load percentage regulation with a lagging p.f. of 0.6 when terminal p.d. on load is 2000 V. A. 7.2% B. 28.8% C. 3.6% D. 14.4%

A 5000 hp synchronous motor is running at full load with a leading pf of 87 percent and assuming 100% efficiency. How many kilovolt-amperes is it drawing? Select one: a. 4.3 kVA b. 4440 kVA c 4287 KVA d. 3730 kVA