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'OﬁENDIﬁf‘aﬁWP: .: 'sproke- HE 331 .
STACK: I Final Examination We material had an area of 9, square centimeters when drawn to scales of 1 cm. L: 0.}- “fesla and 1 cm. = 250 AmpL-Turm/meter. Caicu late the total iron lose in the core ifit '
is energized to the same 1?.m but as ISO Hz. ' ' 2. A 200 KVA, 2-winding transformer has a core loss of 4 kW and mu 10a ' _3. A balanced 3-phase load «300mm Mao V(line) is to be suppﬁehe'oh: 21.39pm ‘
source of 2300 V(1ine) by a Yca bank of ideal 3-phase transformers; Draw adiageam ,. 4.. A 400 V. 60 Hz.. 4-pule, 3-p_h_ase,
Y-connected induction motor has
its per phase equivalent circuit" .
Shawn. Without neglecting-"the , -
stator irn'pedancetdetennine siip '
sh an'd'the speed e; this slip. I 1 '7'.- The per-phase induced voltage of a synchrono _
‘ terminal voltage by 10". If the terminal voltage is 2200.V
blame per phase, determine the current magnitude and ope
:‘(indicate lagging or leading). - ' ‘ ...
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- Spring '08