12.07.2015 Views

Lab Experiment No. 5: Single-Phase Motors

Lab Experiment No. 5: Single-Phase Motors

Lab Experiment No. 5: Single-Phase Motors

SHOW MORE
SHOW LESS
  • No tags were found...

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

-EE 448 <strong>Lab</strong>oratory <strong>Experiment</strong> 5<strong>Single</strong> <strong>Phase</strong> Induction <strong>Motors</strong>120 VoltVoltageVariableACSource88214N4+Ammeter8 Amp+ -I1---W1Wattmeter--V1++Voltmeter-Capacitor RunMotorMain1 25Auxilary3 46C120 VAC Source88211N1Electro-Dynamometer--Figure: 1 Capacitor run motor connection diagramTable 1. Capacitor run motor measurementsV(volts)Torque(lbf-in)120 0120 3120 6120 9I(amps)S(va)P(watts)Speed(r/min)Output(hp)eff(%)p.f.(% *)4. a. Calculate and record in Table 1 the apparent power delivered to themotor, the developed horsepower, the efficiency, and the powerfactor for each of the listed torques.b. Place ammeters properly in the circuit and measure at ratedtorquecurrent in the main field winding __________current in the auxiliary field winding __________c. At the rated torque measure, calculate and record in Table 2 thevalues requested for each of the voltages listed.- 8 -

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!