HOSMERIT
ELEVATOR MECHANIC EXAM REVIEW | 216
QUESTIONS WITH 100% CORRECT
ANSWERS 2024
A contractor wants to raise the car speed from 100fpm to 125fpm, it currently hasa 12"
sheave. What sheave is required? - ✔✔ Diam=12" 12/4=3" 25fpm=3" 100fpm + 25fpm=
12"+3"= 15" sheave
A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or
resistance. What should you do? - ✔✔ 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? - ✔✔ Suicide Circuit
You have an old DC motor and are adding an SCR drive, what do you do to the
interpoles? - ✔✔ 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? -
,✔✔ 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? - ✔✔ 22"
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? - ✔✔ Door Operator Disconnect/ Main Line
Disconnect
The contractor requests that the vertical center of a Rack and Pinion hoist bemoved.
How do you do this? - ✔✔ Adjust Tie Downs and Wall Ties
Working pressure on a Hydro is 400psi. What is the maximum relief valve setting? ✔✔
400psi x 150%= 600psi
What must be installed on a false car before operation? - ✔✔ Spring Loaded Safeties.
There is slight arcing between the brush and commutator. What action must betaken? -
✔✔ 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. Whatis the
beam capacity? - ✔✔ 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? - ✔✔ 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? - ✔✔ Traveling cable has a cut/exposed wire or a short
How is a class 1 yearly buffer test preformed? - ✔✔ 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? - ✔✔ 4. 1 every 100ft
How is stainless steel drilled out? - ✔✔ Slow speed and constant pressure
What is the required amount of retainer clips for wedge shackles and what is the
spacing? - ✔✔ 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? -
✔✔ 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? -
✔✔ Finish side facing the cutting edge of the tool. Blade will burr the backside
How do you cut a finished floor? - ✔✔ Cutting blade away from finished side
A 480vac stepdown 240vac transformer is connected to a 3 phase rectifier, what is the
output voltage? - ✔✔ 320vac
3 phase full wave = 1.33x output voltage
A car is loaded with 125% and sinks, why? - ✔✔ Slipping through the break
If you find a broken or missing barricade what should you do? - ✔✔ Write up a formal
inspection request
ELEVATOR MECHANIC EXAM REVIEW | 216
QUESTIONS WITH 100% CORRECT
ANSWERS 2024
A contractor wants to raise the car speed from 100fpm to 125fpm, it currently hasa 12"
sheave. What sheave is required? - ✔✔ Diam=12" 12/4=3" 25fpm=3" 100fpm + 25fpm=
12"+3"= 15" sheave
A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or
resistance. What should you do? - ✔✔ 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? - ✔✔ Suicide Circuit
You have an old DC motor and are adding an SCR drive, what do you do to the
interpoles? - ✔✔ 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? -
,✔✔ 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? - ✔✔ 22"
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? - ✔✔ Door Operator Disconnect/ Main Line
Disconnect
The contractor requests that the vertical center of a Rack and Pinion hoist bemoved.
How do you do this? - ✔✔ Adjust Tie Downs and Wall Ties
Working pressure on a Hydro is 400psi. What is the maximum relief valve setting? ✔✔
400psi x 150%= 600psi
What must be installed on a false car before operation? - ✔✔ Spring Loaded Safeties.
There is slight arcing between the brush and commutator. What action must betaken? -
✔✔ 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. Whatis the
beam capacity? - ✔✔ 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? - ✔✔ 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? - ✔✔ Traveling cable has a cut/exposed wire or a short
How is a class 1 yearly buffer test preformed? - ✔✔ 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? - ✔✔ 4. 1 every 100ft
How is stainless steel drilled out? - ✔✔ Slow speed and constant pressure
What is the required amount of retainer clips for wedge shackles and what is the
spacing? - ✔✔ 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? -
✔✔ 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? -
✔✔ Finish side facing the cutting edge of the tool. Blade will burr the backside
How do you cut a finished floor? - ✔✔ Cutting blade away from finished side
A 480vac stepdown 240vac transformer is connected to a 3 phase rectifier, what is the
output voltage? - ✔✔ 320vac
3 phase full wave = 1.33x output voltage
A car is loaded with 125% and sinks, why? - ✔✔ Slipping through the break
If you find a broken or missing barricade what should you do? - ✔✔ Write up a formal
inspection request
