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MECHANICS EXAM NEIEP (2024/2025)
QUESTIONS WITH VERIFIED CORRECT ANSWERS
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“** An MOV burns out, you replace it but cannot read voltage or resistance. What should you do?
CORRECT ANSWER Replace it with a larger one (630)"
"* On a Ward-Leonard circuit, the brake is set but the motor is trying to slip through the brake.
What circuit is the issue? - CORRECT ANSWER Suicide circuit (425)"
"** How much resistance is normally measured across a normally closed switch? - CORRECT
ANSWER 1.2 ohms or 1 to 2 ohms"
"** A car traveling in the hoistway always stops at the same point and blows a fuse. What is the
problem? - CORRECT ANSWER Traveling cable has a cut or short"
"** How is a Class 1 (yearly) buffer test performed? - CORRECT ANSWER At slow speed and
the buffer must return in 90 seconds. (555) (60 seconds is acceptable) (90 seconds is code) 5 year test (Class 5) is car at rated load and speed. Buffer must return in 90 seconds. CWT at rated speed and buffer must return in 90 seconds." "* A customer does not want an Escape Hatch on his residential elevator. Under what conditions
is this legal? - CORRECT ANSWER Manual Operation must be provided (850)"
"** You wired the Down Direction and Final Limit switches. Now the car only runs up. What is the
problem? - CORRECT ANSWER You wired the Down Direction Limit wrong."
"** What are the effects of one rope sitting deeper in the sheave groove? - CORRECT ANSWER
The rope wears out and breaks faster (250)" "** There is a noise coming from a freight door. The sheave is moving but the chain is not. What is
the problem? - CORRECT ANSWER Oil on on the chain"
"** What is the effect when you change a sling angle from 60* to 30* when hoisting and rigging?
CORRECT ANSWER More tension, less capacity."
"** How many points of contact must be maintained on a ladder? - CORRECT ANSWER 3
points at all time."
"* What is the conversion formula when measuring Inch to MM? - CORRECT ANSWER 25.
Inch to MM (.03937) 2.54 Inch to CM (.3937)"
"** You open a Dumbwaiter access panel and it still runs. What is the cause? - CORRECT
ANSWER Pit Access switch is not working. (550)"
"** You perform a static load test with the pit valve in the closed position. The car sinks 6" in 15
minutes. What is the cause? - CORRECT ANSWER Cylinder leak (520)"
"** Where should you point the fire extinguisher when putting out a fire? - CORRECT
ANSWER At the base of the fire"
"** A car with a "Selective Collective" controller is moving to the lobby to pick up a call. An up call
is put in at the second floor. What happens? - CORRECT ANSWER Call is bypassed till the car
is moving in the up direction."
"** During construction, you land an escalator but it is 10mm to low. What is wrong? -
CORRECT ANSWER Pit is too deep or Column Mark is off. (825)"
"** During construction, the Omega CWT rails have been damaged. Why? - CORRECT
ANSWER Overtightened from rail bracket. (215)"
"** How do you attach brackets to brick/concrete blocks? - CORRECT ANSWER "Inserts"
1/4" back from brick/concrete blocks"
"** What is the maximum "Moving Walk" incline? - CORRECT ANSWER 12 degrees. (830)"
"** How does a GFCI work? - CORRECT ANSWER It detects an Imbalance between the Hot
and Neutral wires." "** Who is required to provide you with the MSDS or SDS of a solvent you're using to clean rails?
CORRECT ANSWER Your Employer (105)"
"** How do Emergency Doors swing? - CORRECT ANSWER Outward."
"** You have to run an EMT run with 3 - 90s, 2 - 45s and a Saddle bend. What will be required? -
CORRECT ANSWER An Intermediate Pull Box.
"** What is the Maximum door closing force? - CORRECT ANSWER 30 lbs (7 lb Kinetic
Force)"
"** What do you do before replacing a relay on a controller? - CORRECT ANSWER Turn
power off and Lock our Tag out"
"* When are Oil Buffers required? - CORRECT ANSWER Above 200FPM"
"* What amount of Crosby's do you use on 1/2" rope? - CORRECT ANSWER 3"
"* SCRs are good for what? - CORRECT ANSWER They are quieter and cause less vibration
than an MG Set."
"* 1 gallon is how many cubic inches? - CORRECT ANSWER 231"
"** What best describes the operation of a typical Hydro Block Valve with an Elevator parked at
the lobby? - CORRECT ANSWER The Down Valve is closed. The Check Valve is closed. The Up
Valve is open."
"*What is the definition of Working Pressure? - CORRECT ANSWER Full Load Up pressure"
"* What is the conversion from Kilograms to Lbs? - CORRECT ANSWER 1 Kilogram = 2.2 lbs"
"Ohms Law - CORRECT ANSWER "
"Circuit Symbol - Type of Gate - Logic Characteristics - CORRECT ANSWER "
"Rules for Series Circuits - CORRECT ANSWER "
"Rules for Parallel Circuits - CORRECT ANSWER "
"AC Sine wave Frequency and Period - CORRECT ANSWER "
"AC Sine Wave "Effective Value" - CORRECT ANSWER "
"AC Sine Wave "Average Value" - CORRECT ANSWER "
"AC Sine Wave "Peak Voltages and Currents" - CORRECT ANSWER "
"Mechanical and Electrical Degrees - CORRECT ANSWER "
"Ohms Law for AC "Phasing" - CORRECT ANSWER "
"* When are comp ropes (instead of comp chains) required? - CORRECT ANSWER 700 FPM"
"** What diameter cable can be used as a handrail? - CORRECT ANSWER 1/4" steel cable"
"3 phase rectifier Output? - CORRECT ANSWER 1.33 x Input"
"Single phase rectifier Output? - CORRECT ANSWER 0.9 x Input"
"Rated speed? - CORRECT ANSWER Full speed no load"
"* Time constant question on test? - CORRECT ANSWER 45 seconds"
"** How much weight to add to cwt question on test? - CORRECT ANSWER 11 plates"
"** Inverting OpAmp - CORRECT ANSWER Analog Inverting"
"SCR - CORRECT ANSWER Forward Biased"
"** Sparking on generator? - CORRECT ANSWER High Mica"
"** Dumbwaiter takes off while loading, why? - CORRECT ANSWER Non-Interference not
working"
"** What can AC generator Interpoles reduce? - CORRECT ANSWER Armature Reaction"
"** Capacitor microfarad discharge question on test? - CORRECT ANSWER 5 seconds"
"** 3rd floor bulb burned out question on test? - CORRECT ANSWER Shorted resistor"
"If you are testing a circuit with a multimeter, what voltage reading would you expect to have
when connected to C and E? - CORRECT ANSWER 120 VAC"
"How do the relay contacts in figure 15 reverse the direction of this 3 phase motor? - CORRECT
ANSWER By reversing L1 and L2"
"How much resistance is measured over a normally closed switch? - CORRECT ANSWER.
Ohms- 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 - 515"
"When drilling a jack hole in sandy conditions what type of drill rig is required? - CORRECT
ANSWER Rotary or Auger bit
Note: Rotary=soft Percussion= rocky Combo= solid - 810" "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 - 840"
"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"
"What does a square with a darkened upper triangle represent? - CORRECT ANSWER DC
Relay Note: Square with a darkened lower triangle = latching relay Note: square with arrow through it = timer relay - 730" "The close door limit switch is not working, you have power at points 35-8, no voltage at 1-S2 why?
- CORRECT ANSWER Door limit switch malfunction- Sheet 1 730 prints"
"Car is running normally, but the Fire Service buzzer will not shut off, Why? - CORRECT
ANSWER EHP 3-2 shorted Sheet 2 730 prints"
"Relay STR has voltage, TRU has voltage, RU no voltage, why? - CORRECT ANSWER TRU 9/
open * Sheet 3 730 prints*"
"2nd floor PI lights then quickly shuts off, why? - CORRECT ANSWER X1 4-6 * Sheet 2 print
"Car will not travel to 2 without a 3 call, and will not go down to 3 without a 2 call? - CORRECT
ANSWER 2 F1 4-6 * Sheet 1 print 730*"
"Using sheet 3, why wont the motor start? - CORRECT ANSWER MOL1 T/B * Sheet 3 print
"The step level switch on an escalator has been tripped, where do you check? - CORRECT
ANSWER The upper and lower truss assemblies, trips if the step sags more than 1/8 inch. - 825"
"You get a trouble call for an inoperable freight door. What must you do before you begin work?
CORRECT ANSWER Block open the door, LOTO, and barricades - 540"
"You get shocked when attempting to move a car with a temp run bug, what is the problem? -
CORRECT ANSWER Ground wire not hooked up - 810"
"A Motor needs a sleeve bearing replaced, what type of bearing do you need? - CORRECT
ANSWER Friction bearing AKA sleeve bearing - 420"
"With a 7 foot platform, your inside cab wall clearance is 6'8". What is the thickness or take up of
walls? - CORRECT ANSWER 2 inch thick walls"
"You notice Roughing on the Gov and Tail Sheave. What should you check? - CORRECT
ANSWER Rope diameter - 250"
"Car doors are dragging in the sill, how high should the car doors be above the sill? - CORRECT
ANSWER 1/4 inch - 525"
"What type of safeties are required on a 300fpm car? - CORRECT ANSWER Type B wedge
clamp - 240"
"What is the maximum length motor-generator leads can be outside of a controller? - CORRECT
ANSWER 6 feet - 505"
"In what section of NEC is elevator, escalator, moving walks and dumbwaiters? - CORRECT
ANSWER Article 620 - 505"
"What is the ratio between the loop and diameter of a round traveler? - CORRECT ANSWER
30 times - 515"
"What holds a stopped Hydraulic elevator? - CORRECT ANSWER Check valve"
"What must be done if you get on top of a dumbwaiter? - CORRECT ANSWER Never fully get
on top. Work only partially on with the mainline disconnect off."
"How do you measure an escalator handrail? - CORRECT ANSWER Mark the top and bottom
of the inclination, measure in between and mov the car until the bottom mark is at the top. measure again and continue doing this until you see your 1 mark. The last measurement will be shorter. Add all the measurements together to get your length. -835"
"A moving walk has an inclination of 10 degrees, what is the highest angle in can be? - CORRECT
ANSWER 12 degrees for a moving walk
31 degrees for an escalator"
"In a Ward-Leonard system, if all 3 contacts close what will happen? - CORRECT ANSWER
The car run at full speed - 415"
"What type of oil do you put in the machine? - CORRECT ANSWER Gear oil, non-detergent,
single viscosity"
"A 75 ohm resistor has blown, no replacement, how do you fix it? - CORRECT ANSWER 3 - 225
ohms in parallel. 3- 25 ohm resistors in series."
"If a Rack and Pinion hoist is not plumb, level and square. What can happen? - CORRECT
ANSWER Set the safeties"
"What are extension tubes used for? - CORRECT ANSWER Necessary clearance for
placement of concrete forms." "You are installing machines, governors, and generators, and need to know the location where it
needs to be installed. Where would you find the information? - CORRECT ANSWER The
machine room plan view"
"What is the minimum breaking strength of a wire rope used as life safety? - CORRECT
ANSWER 5,000 pounds"
"What is known as the silent killer? - CORRECT ANSWER CTW"
"You go to a trouble call and the building owner keeps asking when the car will be back up and if
you can take any short cuts to get it up faster. what is your response? - CORRECT ANSWER
Give a reasonable response on time and safety factors. If that doesnt work he can **** off"
"You are preparing to replace a resistor on an out of service car. What is the 1st thing to do? -
CORRECT ANSWER Make sure it is LOTO and verify no voltage"
"What are 3 major factors in hydraulic pit maintenance? - CORRECT ANSWER Oil, tripping
hazards, electricity"
"What is the tolerance for 3/8 at .003? - CORRECT ANSWER .372- .378 bilateral= 2 direction
unilateral= 1 direction"
"You are installing push buttons using snake eye screws. What type of screwdriver? - CORRECT
ANSWER Tamper proof"
"You are working with eye bolts, where would you check for lifting capacity? - CORRECT
ANSWER NEVER use eye bolts for hoisting"
"You are installing the limit cam on the car and notice that the holes are not lining up. Where do
you find the correct location for the cam? - CORRECT ANSWER The mechanical detail
drawing" "You are on a call and find the pulley came off the pump motor and the set screw is missing, what
kind of screw would you use to replace the set screw? - CORRECT ANSWER Cup screw"
"You have to measure the outside of a pipe. What tool would you use? - CORRECT ANSWER
Caliper Rule"
"You are installing spring buffers on a 200 fpm car, what is the minimum buffer stroke? -
CORRECT ANSWER 200 fpm= 4 inch Note: 100 fpm= 1 1/2 inch Note : 100 fpm- 150 fpm = 2
1/2 inch"
"You are going to replace the disc on your grinder, what test should you do before using? -
CORRECT ANSWER Ring test"
"How often do electrical cords need to be checked for continuity? - CORRECT ANSWER Every
3 months"
"You need to replace an unmarked single phase transformer with primary voltage at 220 vac current at 5 amp. What size would you need to double it? Note: kVa sizing must be calculated
from primary or secondary volt + amp info - CORRECT ANSWER 2.2 kVa"
"You have attempted to start up a 3 phase AC motor and stalls then hums or growls? - CORRECT
ANSWER If the rotor bar becomes loose at the ring connection, or if the rotor bar cracks,
current cannot flow through the bar, and the entire rotor is disrupted, causing loud growl or humming sound"
"Your fluke digital multimeter reads 440 vac, what value are you reading? - CORRECT
ANSWER 440 vac RMS"
"You have determined that the period of an oscillation that you can feel in the car is .5 seconds.
What is the frequency of the oscillation? - CORRECT ANSWER 2 hz frequency from time or
period F=1/T F=1/.5= 2hz" "Customer complains that elevator is having door problem at every floor. Where do you start
trouble shooting? - CORRECT ANSWER The car doors"
"Freight doors are binding because they are hanging out of square, what adjustments can you
make? - CORRECT ANSWER Adjust door track chains"
"You are about to start installing your duct run in the hoist way. What is the best method to give
you the straightest line? - CORRECT ANSWER Using a plumb bob, snap the line, and measure
off of the rail"
"When installing multiple traveling cables, where is the first cable located? - CORRECT
ANSWER First is closest to the rail"
"You momentarily actuate the motor starting relay, the direction of rotation is not correct, what
can be done to change rotation direction? - CORRECT ANSWER Reverse any 2 leads of
incoming motor phases"
"Before you can move a piston on a hydro, what precautions must be taken? - CORRECT
ANSWER Check the piston for debris and tightness of the head, make sure pit is clear"
"You are preparing to hoist the car for cable installation, before doing this, what needs to be
installed? - CORRECT ANSWER The governor cable"
"While on service you observe the mechanical style safety edges on center opening doors bumping into each other, reopening the doors. Where do you need to look to repair this problem?
- CORRECT ANSWER The safety edge retraction mechanism" "You are about to trouble shoot an elevator that is off, what print would help make it easier to
trace the circuits? - CORRECT ANSWER Straight line diagram"
"The fuses on a 3 phase input to DC direct drive are open, and the elevator will not run, what
needs to be done to check for a shorted SCR? - CORRECT ANSWER Remove the SCR, connect
- lead to anode, - lead to cathode, jumper between anode and gate .7v if good. Remove jumper and it should stay on, remove a lead should read infinite" "Troubleshooting a 3 input and gate, all inputs are high, but the gate output is low. What is the
problem? - CORRECT ANSWER Faulty gate. Truth table says output should be high."
"Youre going to a trouble call and you find that the machine room has 2 inches of water in it, what
is the first thing you do? - CORRECT ANSWER Leave the machine room"
"You find a blown fuse in the DC circuit feeding the door motor. When picking a replacement fuse
what should you do? - CORRECT ANSWER Compare the blown fuse to the fuse rating in the
straight line diagram" "A DC door motor supplied from a 3 phase rectifier runs slow. The DC voltage that is normally 320
is 220. What should you do? - CORRECT ANSWER Check the fuse feeding the AC rectifier"
"There is a call that a traction elevator is stuck in the overhead. In order to get the car down, what
circuits do you need to jump out? - CORRECT ANSWER The primary safety circuits"
"You just pulled multi-cables down the hoistway of a high rise. How should you provide strain
relief for the cables? - CORRECT ANSWER Required every 100'. Begin at the lowest and work
upwards to adjust tension" "Installing horizontal sliding doors with guides in each door panel, how far must each guides
engage the sill gauge? - CORRECT ANSWER 1/4 inch"
"Your supervisor informs you to change software on a hydro microprocessor board. The software
is a 24 pin DIP package. To properly orientate the new chip on the board, what must you do? -
CORRECT ANSWER Verify that the notch on the dip chip matches the notch on the board"
"You need to speed up an AC motor that has a fixed number of poles. How can you speed it up
using the RPM formula? - CORRECT ANSWER Change the frequency. RPM= 60 x F/ P/2"
"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"
"A motor needs a sleeve bearing replaced, what type of bearing do you need? - CORRECT
ANSWER Friction bearing AKA Sleeve bearing.
Anti-Friction Bearing AKA Ball bearing"
"7-foot platform with inside cab clearance of 6'8", what is the thickness of the cab walls? -
CORRECT ANSWER 2-inch-thick walls"
"You notice Roughing on the Gov and Tail Sheave. What should you check? - CORRECT
ANSWER Rope Diameter"
"Car doors are dragging in the sill, how high should the car doors be above the sill? - CORRECT
ANSWER ¼ inch"
"What type of safeties are required on a 300fpm car? - CORRECT ANSWER Type B wedge
clamp"
"What stopping devices are required on vertical platforms? - CORRECT ANSWER 2 pan
switches. 15lbs max pressure"
"What type of oil is required for sleeve bearings? - CORRECT ANSWER Single viscosity SAE
"What is the maximum inclination for moving walks? - CORRECT ANSWER 12 degrees"
"How does a GFI work? - CORRECT ANSWER Detects an imbalance between Hot and Neutral
Wires"
"Who is required to provide MSDS or SDS for a solvent you are using? - CORRECT ANSWER
Your employer"
"How do emergency doors swing? - CORRECT ANSWER Outwards"
"You have an EMT run with 3-90s, 2-45s, and a saddle bend. What is required? - CORRECT
ANSWER An Intermediate pull box. 360 degrees is most bends for a continuous pipe"
"What is the maximum distance between vertical race way supports? - CORRECT ANSWER
15 feet"
"What is the smallest wire used inside travelers and outside of travelers? - CORRECT
ANSWER #20awg
#24awg"
"What is the maximum distance between strain relief supports? - CORRECT ANSWER 100
feet"
"What is the maximum length Motor-Generator leads can be outside of a controller? -
CORRECT ANSWER 6 feet"
"In what section of NEC is elevator, escalator, moving walks, and dumbwaiters? - CORRECT
ANSWER Article 620"
"What is the ratio between the loop and diameter of a round traveler? - CORRECT ANSWER
30 times"
"What are the most common features of Load Weigh? - CORRECT ANSWER Control
generator field and Inside express operation"
"What is required by ASME on the car top? - CORRECT ANSWER Inspection station, Light,
and Duplex outlet."
"At what distance from closed does the gate switch operate? - CORRECT ANSWER 2 inches"
"What is the minimum number of spares that should be pulled? - CORRECT ANSWER 10 %"
"At what speed should the Gov. switch contact be set to open? - CORRECT ANSWER Electrical
90% of Tripping speed for 150fpm-500fpm. 95% for +500fpm"
"If the DC output of a 3 phase rectifier is lower than specified, what is the problem? - CORRECT
ANSWER AC fuse is blown.
1 input phase is missing"
"What is the overlap minimum on 2 & 3 speed doors? - CORRECT ANSWER Horizontal ½
inch Vertical 1 inch"
"What are minimum and maximum clearance between sill and car doors? - CORRECT
ANSWER ¼ inch Minimum 3/8-inch Maximum"
"What is maximum leading edges for center opening doors? - CORRECT ANSWER ½ inch"
