Elevator Mechanic Exam Review QUESTIONS
WITH VERIFIED CORRECT ANSWERS
A contractor wants to raise the car speed from 100fpm to 125fpm, it
currently has a 12" sheave. What sheave is required? - Answer ✔✔ -
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? - Answer ✔✔ -
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? - 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 ✔✔ - 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? -
Answer ✔✔ - 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
WITH VERIFIED CORRECT ANSWERS
A contractor wants to raise the car speed from 100fpm to 125fpm, it
currently has a 12" sheave. What sheave is required? - Answer ✔✔ -
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? - Answer ✔✔ -
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? - 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 ✔✔ - 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? -
Answer ✔✔ - 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
