Elevator Mechanic Exam Review questions
with correct answers
A contractor wants to raise the car speed from 100fpm to 125fpm, it
currently has a 12" sheave. What sheave is required?
- ...,.🔹VERIFIED 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?
- ...,.🔹VERIFIED 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? - ...,.🔹VERIFIED
ANSWER **✔✔Suicide Circuit
You have an old DC motor and are adding an SCR drive, what do
you do to the interpoles? - ...,.🔹VERIFIED 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
1 \\\/ \\\
44
,remains the same
A hydro runs up with no load, but will not run with a full load.
What is the issue? - ...,.🔹VERIFIED 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? - ...,.🔹VERIFIED 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? - ...,.🔹VERIFIED 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? - ...,.🔹VERIFIED
ANSWER **✔✔Adjust Tie Downs and Wall Ties
Working pressure on a Hydro is 400psi. What is the maximum
relief valve setting? - ...,.🔹VERIFIED ANSWER **✔✔400psi x
2 \\\/ \\\
44
,150%= 600psi
What must be installed on a false car before operation?
- ...,.🔹VERIFIED ANSWER **✔✔Spring Loaded Safeties.
There is slight arcing between the brush and commutator. What
action must be taken? - ...,.🔹VERIFIED 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? - ...,.🔹VERIFIED
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?
- ...,.🔹VERIFIED 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
3 \\\/ \\\
44
, blows a fuse. What causes this? - ...,.🔹VERIFIED ANSWER
**✔✔Traveling cable has a cut/exposed wire or a short
How is a class 1 yearly buffer test preformed? - ...,.🔹VERIFIED
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?
- ...,.🔹VERIFIED ANSWER **✔✔4. 1 every 100ft
How is stainless steel drilled out? - ...,.🔹VERIFIED ANSWER
**✔✔Slow speed and constant pressure
What is the required amount of retainer clips for wedge shackles
and what is the spacing? - ...,.🔹VERIFIED 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
4 \\\/ \\\
44
with correct answers
A contractor wants to raise the car speed from 100fpm to 125fpm, it
currently has a 12" sheave. What sheave is required?
- ...,.🔹VERIFIED 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?
- ...,.🔹VERIFIED 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? - ...,.🔹VERIFIED
ANSWER **✔✔Suicide Circuit
You have an old DC motor and are adding an SCR drive, what do
you do to the interpoles? - ...,.🔹VERIFIED 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
1 \\\/ \\\
44
,remains the same
A hydro runs up with no load, but will not run with a full load.
What is the issue? - ...,.🔹VERIFIED 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? - ...,.🔹VERIFIED 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? - ...,.🔹VERIFIED 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? - ...,.🔹VERIFIED
ANSWER **✔✔Adjust Tie Downs and Wall Ties
Working pressure on a Hydro is 400psi. What is the maximum
relief valve setting? - ...,.🔹VERIFIED ANSWER **✔✔400psi x
2 \\\/ \\\
44
,150%= 600psi
What must be installed on a false car before operation?
- ...,.🔹VERIFIED ANSWER **✔✔Spring Loaded Safeties.
There is slight arcing between the brush and commutator. What
action must be taken? - ...,.🔹VERIFIED 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? - ...,.🔹VERIFIED
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?
- ...,.🔹VERIFIED 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
3 \\\/ \\\
44
, blows a fuse. What causes this? - ...,.🔹VERIFIED ANSWER
**✔✔Traveling cable has a cut/exposed wire or a short
How is a class 1 yearly buffer test preformed? - ...,.🔹VERIFIED
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?
- ...,.🔹VERIFIED ANSWER **✔✔4. 1 every 100ft
How is stainless steel drilled out? - ...,.🔹VERIFIED ANSWER
**✔✔Slow speed and constant pressure
What is the required amount of retainer clips for wedge shackles
and what is the spacing? - ...,.🔹VERIFIED 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
4 \\\/ \\\
44
