4. A 440 V three-phase three-wire system feed two balanced Y- connected loads. One load is an induction motor which maybe represented by an impedance of 10 + 15 ohms per phase. The other is a lighting load equivalent to 15 ohms per phase. Find the total average power a. 32.11 kW b. 25.52 kw c. 30.20 kW d. 28.37 kW 5. A 3-phase, 50 hp, 440 V, 50 Hz induction motor operates on full load with efficiency of 894 and at a power factor of

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4. A 440 V three-phase three-wire system feed two balanced Y-
connected loads. One load is an induction motor which maybe
represented by an impedance of 10 + 15 ohms per phase. The
other is a lighting load equivalent to 15 ohms per phase.
Find the total average power
a. 32.11 kW
b. 25.52 kW
c. 30.28 kW
d. 28.37 kW
5. A 3-phase, 50 hp, 440 V, 50 Hz induction motor operates on
full load with efficiency of 89% and at a power factor of
Transcribed Image Text:4. A 440 V three-phase three-wire system feed two balanced Y- connected loads. One load is an induction motor which maybe represented by an impedance of 10 + 15 ohms per phase. The other is a lighting load equivalent to 15 ohms per phase. Find the total average power a. 32.11 kW b. 25.52 kW c. 30.28 kW d. 28.37 kW 5. A 3-phase, 50 hp, 440 V, 50 Hz induction motor operates on full load with efficiency of 89% and at a power factor of
0.85 lagging. A capacitor bank is connected in parallel to
raise the full load pf to 0.95 lagging. What will be the
capacitance per phase if the capacitors are delta-
connected?
a. 66.8HF
b. 9.23 HF
c. 47.65 4 F
d. 12.65 4F
Transcribed Image Text:0.85 lagging. A capacitor bank is connected in parallel to raise the full load pf to 0.95 lagging. What will be the capacitance per phase if the capacitors are delta- connected? a. 66.8HF b. 9.23 HF c. 47.65 4 F d. 12.65 4F
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