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Elevator Mechanic Exam Review |216 Questions with 100% CORRECT ANSWER s | Verified | Updated
Question 1: A contractor wants to raise the car speed from
100fpm to 125fpm, it currently has a 12" sheave. What sheave is required? Diam=12" 12/4=3" 25fpm=3" 100fpm + 25fpm= 12"+3"= 15" sheave
CORRECT ANSWER : 15" sheave
Question 2: A MOV (Metal Oxide Varistor) burns out. You
replace it, but cannot read voltage or resistance. What should you do?
CORRECT ANSWER : Replace it with a larger MOV
Question 3: On a Ward-Leonard circuit the break is set, but the
motor is trying to slip through the break. What is the issue?
CORRECT ANSWER : Suicide Circuit
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Question 4: You have an old DC motor and are adding an SCR
drive, what do you do to the interpoles?
CORRECT ANSWER : 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
Question 5: A hydro runs up with no load, but will not run with
a full load. What is the issue?
CORRECT ANSWER : The relief valve is set too low
Question 6: 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?
CORRECT ANSWER : 22"
Question 7: You need to work on a freight door retiring cam,
you LOTO the main line but there is still power on the cam.What circuit is still hot?
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CORRECT ANSWER : Door Operator Disconnect/ Main Line
Disconnect
Question 8: The contractor requests that the vertical center of a
Rack and Pinion hoist be moved. How do you do this?
CORRECT ANSWER : Adjust Tie Downs and Wall Ties
Question 9: Working pressure on a Hydro is 400psi. What is the
maximum relief valve setting?
CORRECT ANSWER : 400psi x 150%= 600psi
Question 10: What must be installed on a false car before
operation?
CORRECT ANSWER : Spring Loaded Safeties
Question 11: There is slight arcing between the brush and
commutator. What action must be taken?
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CORRECT ANSWER : None. Heavy arcing=Light brush
pressure. Heavy bush pressure=mechanical wear
Question 12: If rigging gear is roped 3:1 and a BEAM CLAMP is used to lift a 6,000lb load. What is the beam capacity?
CORRECT ANSWER : 18,000lbs. Beam capacity is cut in half
with use of clamp, when rigging all blocks, rope, and clamps will be Equal to the lowest load rating
Question 13: How much resistance is measured over a normally
closed switch?
CORRECT ANSWER : 1.2ohms. should be zero, but will never
be that low
Question 14: A car traveling in the hoistway always stops at the
same spot and blows a fuse. What causes this?