REE Board Exam case studies
REE Board Exam · Put your knowledge to work in context.
The Registered Electrical Engineer (REE) is a Philippine professional title conferred through the Professional Regulation Commission (PRC) after a candidate passes the electrical engineering licensure examination. PRC's electrical engineering page sits alongside its other regulated professions, and PRC's online services list the Registered Electrical Engineer - with passers from May 2010 to date - among the professions whose Certificate of Board Rating and Passing may be requested through an online appointment. The REE Board Exam case studies are 5 cases and about 1,850 words.
1Transformer Replacement Timing Under Geometric Load Growth
A cooperative's 5 MVA, 13.8/0.4 kV transformer carries a peak demand of 3.6 MVA. Its planning rule limits continuous loading to 85% of nameplate, and the supplier quotes 18 months from purchase order to energization.
318 words, about 2 min2Acceptance Sampling of Conductor Resistance
A QA engineer measures the dc resistance of eight 100 m samples cut from a production run of 250 mm2 copper conductor. The contract limits the mean resistance to 5.00 milliohm per 100 m at 20 deg C.
350 words, about 2 min3Diesel Generator Fuel Rate and Cooling Load at Part Load
A 1.5 MW standby diesel generator is tested at site. At full load its fuel-to-electrical efficiency is 40%; at 75% load the efficiency falls to 38%.
377 words, about 2 min4Motor Starting Voltage Dip on a 500 kVA Transformer
A 200 kW, 400 V, three-phase induction motor is supplied from a 500 kVA, 400 V transformer with 5.5% impedance. The motor has full-load efficiency 0.94 and power factor 0.90.
408 words, about 2 min5Cable Sizing With Derating and Voltage-Drop Check
A 250 kW, 400 V, three-phase feeder has a power factor of 0.85 and a route length of 150 m. The cable is copper XLPE in a ventilated tray, ambient temperature 40 deg C, with four loaded circuits bunched together.
397 words, about 2 min