Mechanics Exam Review-NEIEP Questions
and Correct Answers
A contractor wants to raise the car speed from 100 fpm to 125
fpm, it currently has a 12" sheave. What is required? Ans: — 100
fpm/125 fpm= 12"/ X =15
A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot
read voltage or resistance. What should you do? Ans: — Replace it
with a larger MOV - 630
On a Ward-Leonard circuit the brake is set, but the motor is trying
to slip through the brake. What is the issue? Ans: — Suicide Circuit
- 425
You have an old DC motor and are adding an SCR drive, what do
you do to the interpoles? Ans: — 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? Ans: — The relief valve is set too low - 815
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? Ans: — 22" - 235
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? Ans: — Door Operator disconnect -535
The contractor requests that the vertical center of a Rack and
Pinion hoist be moved. How do you do this? Ans: — Adjust tie
downs and wall ties - 850
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Working pressure on a Hydro is 400 PSI. What is the maximum
relief valve setting? Ans: — 400 x 150%= 600 PSI - 815
What must be installed on a false care before operation? Ans: —
Spring Loaded safeties - 110
There is slight arcing between the brush and commutator. What
action must be taken? Ans: — None
Note: Heavy arcing= light brush pressure, Heavy brush pressure=
mechanical wear
If rigging is roped 3:1 and a BEAM CLAMP is used to lift a 6,000lb
load. What is the beam capacity? Ans: — 18,000lbs -210
How much resistance is measured over a normally closed switch?
Ans: — .2 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? Ans: — traveling cable has a
cut/exposed wire or a short - 515
How is a class 1 yearly buffer test preformed? Ans: — Car at the
bottom landing and on inspection, jump out direction and final
limits. With pit clear, run down to compress the buffers, buffers
should fully extend within 90 seconds.
Note: 5 yr is Full load, full speed - 555
How many strain supports are required on a 350 ft raceway? Ans:
—4
1 every 100ft - 505-510
How is stainless steel drilled out? Ans: — Slow speed and constant
pressure - 205
What is the required amout of retainer clips for wedge shackles
and what is the spacing? Ans: — At least 2. First clip being 4 times
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the diameter of the rope from the top of the shackle, and the
second clip is 8 times the diameter of the rope away from the
shackle. - 245
A 300 ohm resistor burns out, but you dont have another one.
How can you make one? Ans: — 2- 600 ohms resistors in parallel
is 300 ohms. Resistance is half of the highest resistor in the
parallel circuit. 3- 225 ohms is 75 ohms. - 345
When cutting laminated panels, which direction should the finish
side face? Ans: — Finish side facing the cutting edge of the tool.
Blade will burr the backside. - 225
How do you cut a finished floor? Ans: — Cutting blade away from
the finished side - 255
A 480 VAC stepdown 240 VAC transformer is connected to a 3
phase rectifier, what is the output voltage? Ans: — 320 VAC
3 phase full wave= 1.33 x output voltage. - 715
A car is loaded with 125% and sinks, why? Ans: — Slipping
through the brake
IF you find a broken or missing barricade what should you do?
Ans: — Write up a formal inspection request
What are the consequences of misaligned joints on a rack and
pinion? Ans: — Broken gear teeth. CWT derailment. Excessive
wear/crease the surface of the tube. - 850
A dumbwaiter is 9 sqft in area, 4 ft in height, and capacity is
13.9lb/ft. What is the total capacity? Ans: — 9 X 4 x 13.9= 500lbs
Max Capacity
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