MECHANICS EXAM REVIEW-NEIEP
A contractor wants to raise the car speed from 100 fpm to 125 fpm, it currently
has a 12" sheave. What is required? - CORRECT ANSWER-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? - CORRECT ANSWER-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? - CORRECT ANSWER-Suicide Circuit - 425
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 - 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? - CORRECT
ANSWER-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? - CORRECT ANSWER-
Door Operator disconnect -535
,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 - 850
Working pressure on a Hydro is 400 PSI. What is the maximum relief valve
setting? - CORRECT ANSWER-400 x 150%= 600 PSI - 815
What must be installed on a false care before operation? - CORRECT ANSWER-
Spring Loaded safeties - 110
There is slight arcing between the brush and commutator. What action must be
taken? - CORRECT ANSWER-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? - CORRECT ANSWER-18,000lbs -210
How much resistance is measured over a normally closed switch? - CORRECT
ANSWER-.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? - CORRECT ANSWER-traveling cable has a cut/exposed wire
or a short - 515
How is a class 1 yearly buffer test preformed? - CORRECT ANSWER-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? - CORRECT
ANSWER-4
1 every 100ft - 505-510
How is stainless steel drilled out? - CORRECT ANSWER-Slow speed and constant
pressure - 205
What is the required amout of retainer clips for wedge shackles and what is the
spacing? - CORRECT ANSWER-At least 2. First clip being 4 times 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? - CORRECT ANSWER-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? -
CORRECT ANSWER-Finish side facing the cutting edge of the tool. Blade will
burr the backside. - 225
How do you cut a finished floor? - CORRECT ANSWER-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? - CORRECT ANSWER-320 VAC
3 phase full wave= 1.33 x output voltage. - 715
A contractor wants to raise the car speed from 100 fpm to 125 fpm, it currently
has a 12" sheave. What is required? - CORRECT ANSWER-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? - CORRECT ANSWER-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? - CORRECT ANSWER-Suicide Circuit - 425
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 - 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? - CORRECT
ANSWER-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? - CORRECT ANSWER-
Door Operator disconnect -535
,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 - 850
Working pressure on a Hydro is 400 PSI. What is the maximum relief valve
setting? - CORRECT ANSWER-400 x 150%= 600 PSI - 815
What must be installed on a false care before operation? - CORRECT ANSWER-
Spring Loaded safeties - 110
There is slight arcing between the brush and commutator. What action must be
taken? - CORRECT ANSWER-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? - CORRECT ANSWER-18,000lbs -210
How much resistance is measured over a normally closed switch? - CORRECT
ANSWER-.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? - CORRECT ANSWER-traveling cable has a cut/exposed wire
or a short - 515
How is a class 1 yearly buffer test preformed? - CORRECT ANSWER-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? - CORRECT
ANSWER-4
1 every 100ft - 505-510
How is stainless steel drilled out? - CORRECT ANSWER-Slow speed and constant
pressure - 205
What is the required amout of retainer clips for wedge shackles and what is the
spacing? - CORRECT ANSWER-At least 2. First clip being 4 times 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? - CORRECT ANSWER-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? -
CORRECT ANSWER-Finish side facing the cutting edge of the tool. Blade will
burr the backside. - 225
How do you cut a finished floor? - CORRECT ANSWER-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? - CORRECT ANSWER-320 VAC
3 phase full wave= 1.33 x output voltage. - 715
