Diagnostic Test For Electrician License Examination Preparation
Ohms Watts for AC Circuits
Time Limit for This Page: 24 minutes
References Permitted: National Electrical CodeŽ, American Electrician's Handbook
Appropriate for Journeyman Electrician, Master Electrician and Electrical Inspector Exams.
Question #1
What is the power factor of a load with 120 ohms resistance and 130 ohms impedance?
Question #2
What is the impedance of a load with a resistance of 28 ohms and an inductive reactance of 28 ohms?
Question #3
What is the true power of an AC reactive circuit that has an apparent power of 1600 VA and a power factor of .96 at 120 volts?
Question #4
What is the expected horsepower of a load that has a power factor of .93, efficiency of .86, voltage of 240 volts and a line current of 32.6 amps?
Upon completion, use any remaining time to make sure you have the right answers. When time has expired, go to the answer page to check your answers with the given answers.
Click HERE for ANSWERS TO DIAGNOSTIC TESTS.
If you did not score three correct in the time allowed, then you might want to consider exam preparation with the help of the David U. Larson workbook:
Click HERE for INFO ABOUT Calculations Workbooks for Electrician License Examinations.