Ay-connected of three identical 100-kva 7967/277 v transformers is supplied with power directly from a large constant-voltage bus. in the short-circuit test, the recorded values on the high- voltage side for one of these transformers are: vsc = 560 v isc = 12.6 a psc = 3300 w (a) if this bank delivers a rated load at 0.88 pf lagging and rated voltage, what is the line-to-line voltage on the primary of the transformer bank? (b) what is the voltage regulation under these conditions?