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Published byHillary Patterson Modified over 9 years ago
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Practical Labs ImpedanceWeighing Air Compression & ExpansionCompressionBoiling Point Versus Pressure
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Alternating Current Impedance Three loads wired in series
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Alternating Current Impedance One resistive – a light One capacitive – a capacitor One Inductive – a motor
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Alternating Current Impedance Switches are added in parallel with the capacitor and motor. Closing a switch causes current to bypass the load
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Resistance With both switches closed the current bypasses both the inductive and capacitive loads. Voltage and current are in phase in a resistive circuit.
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Inductance Voltage peaks before current in an inductive circuit. The motor becomes part of the circuit when its switch is opened – adding inductance to the circuit.
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Capacitance The capacitor becomes part of the circuit when its switch is opened adding capacitance to the circuit. Voltage peaks after current in a capacitive circuit.
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Inductance & Capacitance Voltage and current are in phase in a circuit with capacitance offsetting inductance Both the capacitor and the motor becomes part of the circuit when their switches are opened.
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Inductance & Capacitance Click on either switch to change the switch position Back To Menu
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Capacitance Click on either switch to change the switch position Back To Menu
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Inductance Click on either switch to change the switch position Back To Menu
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Resistance Click on either switch to change the switch position Back To Menu
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Weighing Air Evacuate Cylinder with Vacuum Pump
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Weighing Air Set Scale to Pounds and Ounces 0 lbs 0.0 ozs
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Weighing Air Place Evacuated Cylinder on Scale 28 lbs 10.5 ozs
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Weighing Air Zero Scale with Tank 0 lbs 0.0 ozs
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Weighing Air Open Valve To Let Air In 0 lbs 1.0 ozs Back To Menu
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Compression & Expansion Attach Bicycle Pump To Tank
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Compression & Expansion Pump Tank Pressure to 40 psig 40 psig
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Compression & Expansion Measure Temperature of Line Entering Tank During compression 100°F
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Compression & Expansion Close Valve on Tank and Let Tank Sit for 10 Minutes Wait 10 Minutes
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Compression & Expansion Open Valve on Tank and Measure Temperature at Valve Outlet 60°F Outlet Air Back To Menu
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Boiling Point Versus Pressure Open Valve on Tank and Measure Temperature at Valve Outlet Put water in flask.
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Boiling Point Versus Pressure Open Valve on Tank and Measure Temperature at Valve Outlet Stopper flask and connect hose from flask side port to vacuum pump.
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Boiling Point Versus Pressure Open Valve on Tank and Measure Temperature at Valve Outlet Start vacuum pump and water boils. Back To Menu
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