(Solved): Hi i need this answer asap please (b) Question 1 (a) A star-connected 3-phase generator delivers 50 ...

Hi i need this answer asap please

(b) Question 1 (a) A star-connected 3-phase generator delivers 50 A at unity power factor to a 3- phase system of line voltage 1100 V, when the generated emf is 960 V per phase. The generator internal impedance is assumed to be purely inductive. When the generated emf is increased by 40%, and with the power output remaining constant, find; i) the current, and ii) the power factor at which the generator will then operate. (7) Sketch a typical voltage waveform envelope which shows the effect of both voltage dip and rise following load application and rejection. With reference to the sketch explain what is meant by the terms "transient voltage dip" and "recovery time" for load application (3) (c) A Stamford HC1634K framesize generator has been selected for a stand-alone diesel-generation application. The generator is to operate at 440 V, 50 Hz. With reference to the datasheet for this generator, which is provided in Appendix A of this exam paper, (0) If a steady-state load of 460 kW, 0.9 lag power factor is applied to the generator, determine the efficiency at which it will operate and calculate the engine size required (in kW). c () A 3-phase, 440 V, 50 Hz, 320 kW motor is to be star-delta started from the generator. The motor's efficiency is 91% and its running power factor is 0.82 lag. Determine what % transient voltage dip will be experienced by the generator as the motor starts. (3)