Diagnostic Test For Electrician License Examination Preparation
Transformers - Three Phase
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 line voltage in a wye transformer if the phase voltage is 120 volts?
Question #2
What is the line amp reading in a 3 phase wye transformer if the phase amp reading is 42 amps?
Question #3
What is the line voltage in a 3 phase delta transformer is the phase voltage is 240 volts?
Question #4
What is the line amp reading in a 3 phase delta transformer if the phase amp reading is 42 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.