Practical Labs ImpedanceWeighing Air Compression & ExpansionCompressionBoiling Point Versus Pressure.

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Presentation transcript:

Practical Labs ImpedanceWeighing Air Compression & ExpansionCompressionBoiling Point Versus Pressure

Alternating Current Impedance Three loads wired in series

Alternating Current Impedance One resistive – a light One capacitive – a capacitor One Inductive – a motor

Alternating Current Impedance Switches are added in parallel with the capacitor and motor. Closing a switch causes current to bypass the load

Resistance With both switches closed the current bypasses both the inductive and capacitive loads. Voltage and current are in phase in a resistive circuit.

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.

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.

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.

Inductance & Capacitance Click on either switch to change the switch position Back To Menu

Capacitance Click on either switch to change the switch position Back To Menu

Inductance Click on either switch to change the switch position Back To Menu

Resistance Click on either switch to change the switch position Back To Menu

Weighing Air Evacuate Cylinder with Vacuum Pump

Weighing Air Set Scale to Pounds and Ounces 0 lbs 0.0 ozs

Weighing Air Place Evacuated Cylinder on Scale 28 lbs 10.5 ozs

Weighing Air Zero Scale with Tank 0 lbs 0.0 ozs

Weighing Air Open Valve To Let Air In 0 lbs 1.0 ozs Back To Menu

Compression & Expansion Attach Bicycle Pump To Tank

Compression & Expansion Pump Tank Pressure to 40 psig 40 psig

Compression & Expansion Measure Temperature of Line Entering Tank During compression 100°F

Compression & Expansion Close Valve on Tank and Let Tank Sit for 10 Minutes Wait 10 Minutes

Compression & Expansion Open Valve on Tank and Measure Temperature at Valve Outlet 60°F Outlet Air Back To Menu

Boiling Point Versus Pressure Open Valve on Tank and Measure Temperature at Valve Outlet Put water in flask.

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.

Boiling Point Versus Pressure Open Valve on Tank and Measure Temperature at Valve Outlet Start vacuum pump and water boils. Back To Menu