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QUESTION 4 A three-phase Y-connected, 500 kVA, 3.2 kV, 0.85 PF-lagging, six-pole, 60 Hz synchronous generator has a synchronous reactance of 15 ohm and an armature resistance of 0.8 ohm. What are the electrical losses in this generator at the rated conditions? Attach File Browse My Computer Browse Content Collection QUESTION 5 If phase current of a Delta-connected three-phase system is equal to 1pu, then the line current of the same system is equal to 3 pu. Click Save and submit to save and submit. Click Save All Answers to save all answers. Save All Answers Clos @ # $ 0

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4) Given that, 500 KVA, 3.2 KV 0.85pf lagging ra 0.85; X = 152 Electrical losses at rated condition = ohmic losses Note: Generally, total losses = ohmic losses (+) constant loues (4) mechanical losses | constant losses and mechanical lones are not given, hence neglected " Ohmic lones = 3 ² va we know that at 3 = 34 la I I = 500 x - 500 3x3 2x10 I = 500 3(3:2) I = 90.21A Electrical loues - sta’(10) = 3(90.21] 0. = 19,531.25 watts = 19.531x10 Electrical loves – 19.5312 KW

5) Given that, In Delta connected system, Iph a 1 p.u we know that, In Delta connected system = a (like currents √3 Iph (phare current) - » Į = - ß Iph $(1) I = rapu