Section No Question 1: [12 Marks) ick the correct answer for the following statements The equation of the induced emf (E

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Section No Question 1 12 Marks Ick The Correct Answer For The Following Statements The Equation Of The Induced Emf E 1 (35.27 KiB) Viewed 14 times

Section No Question 1: [12 Marks) ick the correct answer for the following statements The equation of the induced emf (E) of a stand-alone wynchronous penerator as the form () Etlux speed (b) Ek/flux speed (C) E-flux speed When should two of the phates on the synchronous generator be swapped brer? This needs to be done when the grid to which the generator is to be consected has a correct clockwise-rotating field With thie bright lamp circuit, this only needs to happen if the lights der net light up in a cyclic sequence º As soon as the lights light up in a cyclic sequence it becomes essential to swap two of the phases What happens if the generator is connected to the grid without being in synch with • Due to the fact that is a motor protection switch in the circuit anyway, there is nothing that can happen • If the generator is connected to the grid without being in synch, then the son of high currents associated with short-circuits start flowing, risking both people/equipment 4) What conditions need to be fulfilled before the generator is switched through to the grid? (More than one statement may be correct) • The sequences of phases and the phase relationship must be the same at the yenerator and on the grid The voltage on the grid and from the generator do not necessarily need to match before synchronization since they will do after synchronization anyway The voltage being generated by the generator and its frequency need to be exactly the same as what is on the grid The absolute magnitudes of the RMS values for the generator voltage and the voltage on the grid need to be the same What is the correct method to reverse rotation direction of induction motor? Interchange the terminals for the rotor winding Interchange any random two ferminals of the stator winding Only interchange 12 & Lil on the stator winding When should two phases of the synchronous generator be exchanged? This measure is only required if the power mains, to which the generator is to be wynchronized, has the correct clockwise rotational field