ELEVATOR MECHANIC EXAM REVIEW WITH CORRECT 100% QUESTIONS AND VERIFIED ANSWERS GRADED A+

ELEVATOR MECHANIC EXAM REVIEW WITH CORRECT 100% QUESTIONS AND VERIFIED ANSWERS GRADED A+ A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12" sheave. What sheave is required? - ANS-Diam=12" 12/4=3" 25fpm=3" 100fpm + 25fpm= 12"+3"= 15" sheave A motor needs a sleeve bearing replaced, what type of bearing do you need? - ANS-Friction bearing AKA Sleeve bearing. Anti-Friction Bearing AKA Ball bearing 7-foot platform with inside cab clearance of 6'8", what is the thickness of the cab walls? - ANS-2-inchthick walls You notice Roughing on the Gov and Tail Sheave. What should you check? - ANS-Rope Diameter Car doors are dragging in the sill, how high should the car doors be above the sill? - ANS-¼ inch What type of safeties are required on a 300fpm car? - ANS-Type B wedge clamp What stopping devices are required on vertical platforms? - ANS-2 pan switches. 15lbs max pressure What type of oil is required for sleeve bearings? - ANS-Single viscosity SAE 20 What is the maximum inclination for moving walks? - ANS-12 degrees How does a GFI work? - ANS-Detects an imbalance between Hot and Neutral Wires Who is required to provide MSDS or SDS for a solvent you are using? - ANS-Your employer How do emergency doors swing? - ANS-Outwards You have an EMT run with 3-90s, 2-45s, and a saddle bend. What is required? - ANS-An Intermediate pull box. 360 degrees is most bends for a continuous pipe What is the maximum distance between vertical race way supports? - ANS-15 feet A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or resistance. What should you do? - ANS-Replace it with a larger MOV On a Ward-Leonard circuit the break is set, but the motor is trying to slip through the break. What is the issue? - ANS-Suicide Circuit You have an old DC motor and are adding an SCR drive, what do you do to the interpoles? - ANS-Leave the interpoles alone. When adding a SCR drive to the generator, the series loop is removed, as are the 3 resistors. Everything else remains the same A hydro runs up with no load, but will not run with a full load. What is the issue? - ANS-The relief valve is set too low Runby for a 1:1 hits the CWT buffer 4" below the top landing. CWT runby should be set at 18". How much should the ropes be shortened? - ANS-22"