Elevator Mechanic Exam Review Questions And Answers 100% Verified.
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Elevator Mechanic
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Elevator Mechanic
Elevator Mechanic Exam Review Questions And Answers 100% Verified.
A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12" sheave. What sheave is required? - correct answer. Diam=12" 12/4=3" 25fpm=3" 100fpm + 25fpm= 12"+3"= 15" sheave
A MOV (Metal...
Elevator Mechanic Exam Review Questions
And Answers 100% Verified.
A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12"
sheave. What sheave is required? - correct 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? - correct 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? - correct answer. Suicide Circuit
You have an old DC motor and are adding an SCR drive, what do you do to the
interpoles? - correct 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? -
correct 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? - correct 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? - correct 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? - correct answer. Adjust Tie Downs and Wall Ties
Working pressure on a Hydro is 400psi. What is the maximum relief valve setting? -
correct answer. 400psi x 150%= 600psi
What must be installed on a false car before operation? - correct answer. Spring
Loaded Safeties.
,There is slight arcing between the brush and commutator. What action must be taken? -
correct 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? - correct 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? - correct 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? - correct answer. Traveling cable has a cut/exposed wire or a short
How is a class 1 yearly buffer test preformed? - correct 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? - correct answer. 4. 1
every 100ft
How is stainless steel drilled out? - correct answer. Slow speed and constant
pressure
What is the required amount of retainer clips for wedge shackles and what is the
spacing? - correct 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?
- correct 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? - correct
answer. Finish side facing the cutting edge of the tool. Blade will burr the backside
How do you cut a finished floor? - correct answer. Cutting blade away from finished
side
A 480vac stepdown 240vac transformer is connected to a 3 phase rectifier, what is the
output voltage? - correct answer. 320vac
, 3 phase full wave = 1.33x output voltage
A car is loaded with 125% and sinks, why? - correct answer. Slipping through the
break
If you find a broken or missing barricade what should you do? - correct answer.
Write up a formal inspection request
What are the consequences of misaligned joints on a Rack and Pinion? - correct
answer. Broken Gear teeth. CWT derailment. Excessive wear/ crease the surface of
the tube
A dumbwaiter is 9sqft in area, 4ft high, and capacity is 13.9lb/ft3. What is total capacity?
- correct answer. 9 x 4 x 13.9= 500lbs Max capacity
You must enter a pit with a toxic atmosphere, how do you proceed? - correct answer.
Following proper OSHA procedure with proper training and PPE
When changing a 1:1 car rated at 600fpm and 2,000lb capacity to a 2:1, what are the
new ratings? - correct answer. 300fpm 4,000lbs capacity
Half the speed, Double the capacity
A vertical platform lift has a clearance of 1 inch. How much will it have to move to meet
code? - correct answer. Move in ¼ inch. Code is ¾ inch
A car weighs 2500lbs with a capacity of 2500lbs, the CWT is weighted at 40%, how
much is the motor lifting when the car is fully loaded? - correct answer. 2500(car) +
1000(40%) 3500. 5000-3500=1500lbs lifted by the machine
How must Oxygen and Acetylene tanks be stored? - correct answer. Vertically, 12
feet apart, or on a cart with a ½ hour fire barrier between them
What is code for sill to sill distance? - correct answer. Minimum ½ inch Maximum 1
½ inches
When drilling a jack hole in sandy conditions what type of drill rig is required? - correct
answer. Rotary or Auger bit. Rotary=Soft Percussion=Rocky Combo=Solid
A customer does not want an escape hatch on a residential elevator, under what
condition is this legal? - correct answer. Manual operation must be provided
Your helper wired the down direction and final limit switches, now the car will only travel
up, what is the issue? - correct answer. The down direction limit was wired
incorrectly.
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