Elevator Mechanic Exam Review: Verified Questions and Answers | 100% Correct | A Grade – Review

Elevator Mechanic Exam Review 1 gallon equals how many cubic feet? - ANSWER .134 cubic feet 2 controllers in a small machine room face each other, what is the minimum clearance between them? - ANSWER 36 inches 2nd floor PI lights then quickly shuts off, why? - ANSWER X1 4-6 7-foot platform with inside cab clearance of 6'8", what is the thickness of the cab walls? - ANSWER 2-inch-thick walls A 300ohm resistor burns out, but you don't have another one. How can you make one? - ANSWER 2 600ohm resistors in parallel is 300ohms. Resistance is half of highest resistor in parallel circuit. 3 225ohm resistors in parallel is 75ohms. A 480vac stepdown 240vac transformer is connected to a 3 phase rectifier, what is the output voltage? - ANSWER 320vac 3 phase full wave = 1.33x output voltage A 75ohm resistor has blown, no replacement, how do you fix it? - ANSWER 3- 225ohm resistors in parallel. 3-25ohm resis