10 free EEI TOSS practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
EEI TOSS Practice Test 15Tutor mode
Question 1 of 10
Interpreting Diagrams
Relay panel front view
Panel sections are named by column letter and row number (for example, B2).
Panel notes: Each relay's test switch is to its left and its target lamp to its right. A relay is in service only when its test switch is closed. Relay code prefix: OC = overcurrent, DF = differential, UV = undervoltage, RC = reclosing.
How many lit target lamps are in panel section B2?