Unit 50 Lo1.3 & 4
Project description
Please put into report format only 3 main headings required
ie. introduction, findings and conclusion etc
Task 1 lo1.3
A Three Phase (400 V) star connected stator – 50 Hz alternator supplies a balanced delta –connected load. Each phase of the load consists of a coil of resistance 15Ω and inductance 36mH, and the phase voltage generated by the alternator is 231V.
• Provide an appropriate drawing showing alternator connections and Delta connected load, identify Line Voltages – and currents and also phase voltages and currents.
Calculate:
• The phase and line currents
• The load power factor
• The power delivered to the load.
Task 4
A motor coil of resistance 330Ω and inductance 0.25H is connected in series with a 10μF capacitor.
This circuit is connected across a 100 V, 80 Hz supply.
Provide an appropriate drawing showing connections to the three components,
identify and label voltages and supply current.
Draw a complete phasor/vector diagram, showing VL – VC – VR – V coil- (VC – VL) and current.
Calculate the circuit current
The voltage across the coil and the capacitor
The circuit phase angle and power factor
The power dissipated
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