Elevator Mechanic Exam Review
2025 Questions and Answers
A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12"
sheave. What sheave is required? - ANSWER✔✔-125/100=1.25x12"=15" sheave
A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or
resistance. What should you do? - ANSWER✔✔-Check circuit voltage
On a Ward-Leonard circuit the break is set, but the motor is trying to slip through the
break. What is the issue? - ANSWER✔✔-Suicide Circuit
You have an old DC motor and are adding an SCR drive, what do you do to the
interpoles? - 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
A hydro runs up with no load, but will not run with a full load. What is the issue? -
ANSWER✔✔-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? - ANSWER✔✔-1:1-22"
2:1-44"
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? - ANSWER✔✔-Door circuit is still hot,
Door Operator Disconnect/ Main Line Disconnect
The contractor requests that the vertical center of a Rack and Pinion hoist be moved.
How do you do this? - ANSWER✔✔-Adjust Tie Downs and Wall Ties
Working pressure on a Hydro is 400psi. What is the maximum relief valve setting? -
ANSWER✔✔-400psi x 150%= 600psi
What must be installed on a false car before operation? - ANSWER✔✔-Spring Loaded
Safeties.
There is slight arcing between the brush and commutator. What action must be taken? -
ANSWER✔✔-None.
Heavy arcing=Light brush pressure. Heavy bush pressure=mechanical wear
If rigging gear is roped 3:1 and a BEAM CLAMP is used to lift a 6,000lb load. What is
the beam capacity? - 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
,How much resistance is measured over a normally closed switch? - ANSWER✔✔-
1.2ohms. should be zero, but will never be that low
A car traveling in the hoistway always stops at the same spot and blows a fuse. What
causes this? - ANSWER✔✔-Traveling cable has a cut/exposed wire or a short
How is a class 1 yearly buffer test preformed? - ANSWER✔✔-Car at bottom landing
and on inspection, jump out direction and final limits. With pit clear, run down to
compress buffers, buffers should fully extend within 90 seconds.
5yr: Full load Full speed
CWT: Full speed Empty
How many strain supports are required on a 350ft raceway? - ANSWER✔✔-4-1 every
100ft
How is stainless steel drilled out? - ANSWER✔✔-Slow speed and constant pressure
What is the required amount of retainer clips for wedge shackles and what is the
spacing? - ANSWER✔✔-Minimum 2 clips. 1st at a maximum 4x the diameter of the
rope
2nd at a maximum 8x the diameter above the 1st clip
, 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.
When cutting laminated panels, which direction should the finish side face? -
ANSWER✔✔-Finish side facing the cutting edge of the tool. Blade will burr the
backside
How do you cut a finished floor? - ANSWER✔✔-Cutting blade away from finished side
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 of transformer
1 phase full wave= .9 x output voltage of transformer
A car is loaded with 125% and sinks, why? - ANSWER✔✔-Slipping through the break
If you find a broken or missing barricade what should you do? - ANSWER✔✔-Write up
a formal inspection request
What are the consequences of misaligned joints on a Rack and Pinion? - ANSWER✔✔-
Broken Gear teeth. CWT derailment. Excessive wear/ crease the surface of the tube
2025 Questions and Answers
A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12"
sheave. What sheave is required? - ANSWER✔✔-125/100=1.25x12"=15" sheave
A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or
resistance. What should you do? - ANSWER✔✔-Check circuit voltage
On a Ward-Leonard circuit the break is set, but the motor is trying to slip through the
break. What is the issue? - ANSWER✔✔-Suicide Circuit
You have an old DC motor and are adding an SCR drive, what do you do to the
interpoles? - 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
A hydro runs up with no load, but will not run with a full load. What is the issue? -
ANSWER✔✔-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? - ANSWER✔✔-1:1-22"
2:1-44"
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? - ANSWER✔✔-Door circuit is still hot,
Door Operator Disconnect/ Main Line Disconnect
The contractor requests that the vertical center of a Rack and Pinion hoist be moved.
How do you do this? - ANSWER✔✔-Adjust Tie Downs and Wall Ties
Working pressure on a Hydro is 400psi. What is the maximum relief valve setting? -
ANSWER✔✔-400psi x 150%= 600psi
What must be installed on a false car before operation? - ANSWER✔✔-Spring Loaded
Safeties.
There is slight arcing between the brush and commutator. What action must be taken? -
ANSWER✔✔-None.
Heavy arcing=Light brush pressure. Heavy bush pressure=mechanical wear
If rigging gear is roped 3:1 and a BEAM CLAMP is used to lift a 6,000lb load. What is
the beam capacity? - 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
,How much resistance is measured over a normally closed switch? - ANSWER✔✔-
1.2ohms. should be zero, but will never be that low
A car traveling in the hoistway always stops at the same spot and blows a fuse. What
causes this? - ANSWER✔✔-Traveling cable has a cut/exposed wire or a short
How is a class 1 yearly buffer test preformed? - ANSWER✔✔-Car at bottom landing
and on inspection, jump out direction and final limits. With pit clear, run down to
compress buffers, buffers should fully extend within 90 seconds.
5yr: Full load Full speed
CWT: Full speed Empty
How many strain supports are required on a 350ft raceway? - ANSWER✔✔-4-1 every
100ft
How is stainless steel drilled out? - ANSWER✔✔-Slow speed and constant pressure
What is the required amount of retainer clips for wedge shackles and what is the
spacing? - ANSWER✔✔-Minimum 2 clips. 1st at a maximum 4x the diameter of the
rope
2nd at a maximum 8x the diameter above the 1st clip
, 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.
When cutting laminated panels, which direction should the finish side face? -
ANSWER✔✔-Finish side facing the cutting edge of the tool. Blade will burr the
backside
How do you cut a finished floor? - ANSWER✔✔-Cutting blade away from finished side
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 of transformer
1 phase full wave= .9 x output voltage of transformer
A car is loaded with 125% and sinks, why? - ANSWER✔✔-Slipping through the break
If you find a broken or missing barricade what should you do? - ANSWER✔✔-Write up
a formal inspection request
What are the consequences of misaligned joints on a Rack and Pinion? - ANSWER✔✔-
Broken Gear teeth. CWT derailment. Excessive wear/ crease the surface of the tube
