Elevator Mechanic Exam Review with complete answers
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A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12"
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sheave. What sheave is required? - CORRECT ANSWER✔✔Diam=12" 12/4=3" 25fpm=3"
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100fpm + 25fpm= 12"+3"= 15" sheave
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A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or
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resistance. What should you do? - CORRECT ANSWER✔✔Replace it with a larger MOV
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On a Ward-Leonard circuit the break is set, but the motor is trying to slip through the break.
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What is the issue? - CORRECT ANSWER✔✔Suicide Circuit
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You have an old DC motor and are adding an SCR drive, what do you do to the interpoles? -
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CORRECT ANSWER✔✔Leave the interpoles alone. When adding a SCR drive to the
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generator, the series loop is removed, as are the 3 resistors. Everything else remains the
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same
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A hydro runs up with no load, but will not run with a full load. What is the issue? - CORRECT
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ANSWER✔✔The relief valve is set too low
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Runby for a 1:1 hits the CWT buffer 4" below the top landing. CWT runby should be set at 18".
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How much should the ropes be shortened? - CORRECT ANSWER✔✔22"
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You need to work on a freight door retiring cam, you LOTO the main line but there is still
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power on the cam. What circuit is still hot? - CORRECT ANSWER✔✔Door Operator
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Disconnect/ Main Line Disconnect
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The contractor requests that the vertical center of a Rack and Pinion hoist be moved. How do
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you do this? - CORRECT ANSWER✔✔Adjust Tie Downs and Wall Ties
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Working pressure on a Hydro is 400psi. What is the maximum relief valve setting? -
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CORRECT ANSWER✔✔400psi x 150%= 600psi
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,What must be installed on a false car before operation? - CORRECT ANSWER✔✔Spring
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Loaded Safeties.
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There is slight arcing between the brush and commutator. What action must be taken? -
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CORRECT ANSWER✔✔None.
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Heavy arcing=Light brush pressure. Heavy bush pressure=mechanical wear
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If rigging gear is roped 3:1 and a BEAM CLAMP is used to lift a 6,000lb load. What is the
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beam capacity? - CORRECT ANSWER✔✔18,000lbs. Beam capacity is cut in half with use
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of clamp, when rigging all blocks, rope, and clamps will be Equal to the lowest load rating
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How much resistance is measured over a normally closed switch? - CORRECT
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ANSWER✔✔1.2ohms. should be zero, but will never be that low
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A car traveling in the hoistway always stops at the same spot and blows a fuse. What causes
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this? - CORRECT ANSWER✔✔Traveling cable has a cut/exposed wire or a short
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How is a class 1 yearly buffer test preformed? - CORRECT ANSWER✔✔Car at bottom
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landing and on inspection, jump out direction and final limits. With pit clear, run down to
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compress buffers, buffers should fully extend within 90 seconds.
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5yr: Full load Full speed
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CWT: Full speed Empty d d d
How many strain supports are required on a 350ft raceway? - CORRECT ANSWER✔✔4. 1
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every 100ft
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How is stainless steel drilled out? - CORRECT ANSWER✔✔Slow speed and constant
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pressure
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What is the required amount of retainer clips for wedge shackles and what is the spacing? -
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CORRECT ANSWER✔✔Minimum 2 clips. 1st at a maximum 4x the diameter of the rope
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2nd at a maximum 8x the diameter above the 1st clip
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A 300ohm resistor burns out, but you don't have another one. How can you make one? -
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CORRECT ANSWER✔✔2 600ohm resistors in parallel is 300ohms. Resistance is half of
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highest resistor in parallel circuit.
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3 225ohm resistors in parallel is 75ohms.
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When cutting laminated panels, which direction should the finish side face? - CORRECT
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ANSWER✔✔Finish side facing the cutting edge of the tool. Blade will burr the backside
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How do you cut a finished floor? - CORRECT ANSWER✔✔Cutting blade away from
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finished side
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, A 480vac stepdown 240vac transformer is connected to a 3 phase rectifier, what is the
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output voltage? - CORRECT ANSWER✔✔320vac
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3 phase full wave = 1.33x output voltage
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A car is loaded with 125% and sinks, why? - CORRECT ANSWER✔✔Slipping through the
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break
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If you find a broken or missing barricade what should you do? - CORRECT
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ANSWER✔✔Write up a formal inspection request
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What are the consequences of misaligned joints on a Rack and Pinion? - CORRECT
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ANSWER✔✔Broken Gear teeth. CWT derailment. Excessive wear/ crease the surface of
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the tube
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A dumbwaiter is 9sqft in area, 4ft high, and capacity is 13.9lb/ft3. What is total capacity? -
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CORRECT ANSWER✔✔9 x 4 x 13.9= 500lbs Max capacity
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You must enter a pit with a toxic atmosphere, how do you proceed? - CORRECT
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ANSWER✔✔Following proper OSHA procedure with proper training and PPE
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When changing a 1:1 car rated at 600fpm and 2,000lb capacity to a 2:1, what are the new
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ratings? - CORRECT ANSWER✔✔300fpm 4,000lbs capacity
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Half the speed, Double the capacity
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A vertical platform lift has a clearance of 1 inch. How much will it have to move to meet code?
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- CORRECT ANSWER✔✔Move in ¼ inch. Code is ¾ inch
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A car weighs 2500lbs with a capacity of 2500lbs, the CWT is weighted at 40%, how much is
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the motor lifting when the car is fully loaded? - CORRECT ANSWER✔✔2500(car) +
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1000(40%) 3500. 5000-3500=1500lbs lifted by the machine
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How must Oxygen and Acetylene tanks be stored? - CORRECT ANSWER✔✔Vertically, 12
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feet apart, or on a cart with a ½ hour fire barrier between them
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What is code for sill to sill distance? - CORRECT ANSWER✔✔Minimum ½ inch Maximum 1
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½ inches
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When drilling a jack hole in sandy conditions what type of drill rig is required? - CORRECT
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ANSWER✔✔Rotary or Auger bit. Rotary=Soft Percussion=Rocky Combo=Solid
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A customer does not want an escape hatch on a residential elevator, under what condition is
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this legal? - CORRECT ANSWER✔✔Manual operation must be provided
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A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12"
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sheave. What sheave is required? - CORRECT ANSWER✔✔Diam=12" 12/4=3" 25fpm=3"
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100fpm + 25fpm= 12"+3"= 15" sheave
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A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or
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resistance. What should you do? - CORRECT ANSWER✔✔Replace it with a larger MOV
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On a Ward-Leonard circuit the break is set, but the motor is trying to slip through the break.
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What is the issue? - CORRECT ANSWER✔✔Suicide Circuit
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You have an old DC motor and are adding an SCR drive, what do you do to the interpoles? -
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CORRECT ANSWER✔✔Leave the interpoles alone. When adding a SCR drive to the
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generator, the series loop is removed, as are the 3 resistors. Everything else remains the
d d d d d d d d d d d d d d d
same
d
A hydro runs up with no load, but will not run with a full load. What is the issue? - CORRECT
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ANSWER✔✔The relief valve is set too low
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Runby for a 1:1 hits the CWT buffer 4" below the top landing. CWT runby should be set at 18".
d d d d d d d d d d d d d d d d d d d
How much should the ropes be shortened? - CORRECT ANSWER✔✔22"
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You need to work on a freight door retiring cam, you LOTO the main line but there is still
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power on the cam. What circuit is still hot? - CORRECT ANSWER✔✔Door Operator
d d d d d d d d d d d d d
Disconnect/ Main Line Disconnect
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The contractor requests that the vertical center of a Rack and Pinion hoist be moved. How do
d d d d d d d d d d d d d d d d
you do this? - CORRECT ANSWER✔✔Adjust Tie Downs and Wall Ties
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Working pressure on a Hydro is 400psi. What is the maximum relief valve setting? -
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CORRECT ANSWER✔✔400psi x 150%= 600psi
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,What must be installed on a false car before operation? - CORRECT ANSWER✔✔Spring
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Loaded Safeties.
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There is slight arcing between the brush and commutator. What action must be taken? -
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CORRECT ANSWER✔✔None.
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Heavy arcing=Light brush pressure. Heavy bush pressure=mechanical wear
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If rigging gear is roped 3:1 and a BEAM CLAMP is used to lift a 6,000lb load. What is the
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beam capacity? - CORRECT ANSWER✔✔18,000lbs. Beam capacity is cut in half with use
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of clamp, when rigging all blocks, rope, and clamps will be Equal to the lowest load rating
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How much resistance is measured over a normally closed switch? - CORRECT
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ANSWER✔✔1.2ohms. should be zero, but will never be that low
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A car traveling in the hoistway always stops at the same spot and blows a fuse. What causes
d d d d d d d d d d d d d d d d d
this? - CORRECT ANSWER✔✔Traveling cable has a cut/exposed wire or a short
d d d d d d d d d d d d
How is a class 1 yearly buffer test preformed? - CORRECT ANSWER✔✔Car at bottom
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landing and on inspection, jump out direction and final limits. With pit clear, run down to
d d d d d d d d d d d d d d d d
compress buffers, buffers should fully extend within 90 seconds.
d d d d d d d d d d
5yr: Full load Full speed
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CWT: Full speed Empty d d d
How many strain supports are required on a 350ft raceway? - CORRECT ANSWER✔✔4. 1
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every 100ft
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How is stainless steel drilled out? - CORRECT ANSWER✔✔Slow speed and constant
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pressure
d
What is the required amount of retainer clips for wedge shackles and what is the spacing? -
d d d d d d d d d d d d d d d d
CORRECT ANSWER✔✔Minimum 2 clips. 1st at a maximum 4x the diameter of the rope
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2nd at a maximum 8x the diameter above the 1st clip
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A 300ohm resistor burns out, but you don't have another one. How can you make one? -
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CORRECT ANSWER✔✔2 600ohm resistors in parallel is 300ohms. Resistance is half of
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highest resistor in parallel circuit.
d d d d d d
3 225ohm resistors in parallel is 75ohms.
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When cutting laminated panels, which direction should the finish side face? - CORRECT
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ANSWER✔✔Finish side facing the cutting edge of the tool. Blade will burr the backside
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How do you cut a finished floor? - CORRECT ANSWER✔✔Cutting blade away from
d d d d d d d d d d d d
finished side
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, A 480vac stepdown 240vac transformer is connected to a 3 phase rectifier, what is the
d d d d d d d d d d d d d d
output voltage? - CORRECT ANSWER✔✔320vac
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3 phase full wave = 1.33x output voltage
d d d d d d d
A car is loaded with 125% and sinks, why? - CORRECT ANSWER✔✔Slipping through the
d d d d d d d d d d d d d
break
d
If you find a broken or missing barricade what should you do? - CORRECT
d d d d d d d d d d d d d
ANSWER✔✔Write up a formal inspection request
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What are the consequences of misaligned joints on a Rack and Pinion? - CORRECT
d d d d d d d d d d d d d
ANSWER✔✔Broken Gear teeth. CWT derailment. Excessive wear/ crease the surface of
d d d d d d d d d d d
the tube
d d
A dumbwaiter is 9sqft in area, 4ft high, and capacity is 13.9lb/ft3. What is total capacity? -
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CORRECT ANSWER✔✔9 x 4 x 13.9= 500lbs Max capacity
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You must enter a pit with a toxic atmosphere, how do you proceed? - CORRECT
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ANSWER✔✔Following proper OSHA procedure with proper training and PPE
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When changing a 1:1 car rated at 600fpm and 2,000lb capacity to a 2:1, what are the new
d d d d d d d d d d d d d d d d d
ratings? - CORRECT ANSWER✔✔300fpm 4,000lbs capacity
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Half the speed, Double the capacity
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A vertical platform lift has a clearance of 1 inch. How much will it have to move to meet code?
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- CORRECT ANSWER✔✔Move in ¼ inch. Code is ¾ inch
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A car weighs 2500lbs with a capacity of 2500lbs, the CWT is weighted at 40%, how much is
d d d d d d d d d d d d d d d d d
the motor lifting when the car is fully loaded? - CORRECT ANSWER✔✔2500(car) +
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1000(40%) 3500. 5000-3500=1500lbs lifted by the machine
d d d d d d d
How must Oxygen and Acetylene tanks be stored? - CORRECT ANSWER✔✔Vertically, 12
d d d d d d d d d d d
feet apart, or on a cart with a ½ hour fire barrier between them
d d d d d d d d d d d d d d
What is code for sill to sill distance? - CORRECT ANSWER✔✔Minimum ½ inch Maximum 1
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½ inches
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When drilling a jack hole in sandy conditions what type of drill rig is required? - CORRECT
d d d d d d d d d d d d d d d d
ANSWER✔✔Rotary or Auger bit. Rotary=Soft Percussion=Rocky Combo=Solid
d d d d d d d
A customer does not want an escape hatch on a residential elevator, under what condition is
d d d d d d d d d d d d d d d
this legal? - CORRECT ANSWER✔✔Manual operation must be provided
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