NEIEP MECHANICS FINAL EXAM | QUESTIONS AND ANSWERS |
VERIFIED AND ACCURATE ANSWERS | LATEST EXAM UPDATE
** 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)
** A Hydro runs up with no load but does not run up with a full load. What is
the issue? - CORRECT ANSWER - The relief valve is set too low (805)
** Runby for a 1:1 car hits the CWT buffer 4" below the top landing. The CWT
runby should be set at 18". How much should the ropes be shortened? -
CORRECT ANSWER - 22" for 1:1.
For a 2:1 with the same issue is 44".
** You need to work on a freight door retiring cam. You LOTO the mainline
disconnect but there is still power to the cam. What circuit is still hot? -
CORRECT ANSWER - Mainline disconnect (535)
** The contractor requests that the vertical center of the Rack and Pinion hoist
be moved. How is this accomplished? - CORRECT ANSWER - Adjust Tie
downs/Wall ties (805)
** Working pressure on a Hydro is 400 PSI. What is the correct Relief Valve
Setting? - CORRECT ANSWER - 600 PSI Max. (805)
,400 psi x 150% = 600 psi
** A contractor wants to raise the car speed from 100 FPM to 125 FPM. It
currently has a 12" sheave. What size sheave is required? - CORRECT
ANSWER - 15"
(125 /100 = 1.25 1.25 x 12 = 15)
** There is slight arcing at the Brushes and Commutator. What actions must be
taken? - CORRECT ANSWER - None. (430)
"Heavy arcing is due to light brush pressure. Mechanical wear indicates heavy
brush pressure.
** 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.
** How many Strain Supports are required on a 350' raceway? - CORRECT
ANSWER - 4
One for every 100'
** How is Stainless steel drilled out? - CORRECT ANSWER - Slow speed
and constant pressure (205)
, ** What are the required amount of clips for Wedge Shackles and what is their
spacing? - CORRECT ANSWER - At least 2, with the first being 4 times the
diameter of the rope from the top of shackle.
Second is 8 times the diameter of the rope from the first.
** Car is loaded with 125% and sinks. Why? - CORRECT ANSWER -
Slipped through the brake.
** A 300 Ohm resistor burns out. You don't have a 300 Ohm resistor to replace
it. What can you use to make up the resistor? - CORRECT ANSWER - 2 600
Ohms resistors in Parallel. "The resistance is half of the highest rating in a
parallel circuit.
3, 225 Ohm resistors in parallel equal 75 Ohms.
** A 480 VAC Step Down Transformer is connected to a 3 phase rectifier. What
will the output be? - CORRECT ANSWER - 320 VDC
480 - 33.33% = 320
** If you find a broken or missing barricade, what do you do? - CORRECT
ANSWER - Write up a formal inspection request.
** If a Dumbwaiter has 9 square feet in Area,
4 ' High and the rated Capacity is 13.9 lb/ft3, what is the total capacity? -
CORRECT ANSWER - 500 lb/ft3.
"The area of a Dumbwaiter is 9 sq' max and is 4' High. Multiply that by 13.9.
9x4 = 36. 36 x 13.9 = 500
** What are the consequences of a misaligned Rack and Pinion hoist joint? -
CORRECT ANSWER - Broken Gear Teeth (850) Motor not aligned.
VERIFIED AND ACCURATE ANSWERS | LATEST EXAM UPDATE
** 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)
** A Hydro runs up with no load but does not run up with a full load. What is
the issue? - CORRECT ANSWER - The relief valve is set too low (805)
** Runby for a 1:1 car hits the CWT buffer 4" below the top landing. The CWT
runby should be set at 18". How much should the ropes be shortened? -
CORRECT ANSWER - 22" for 1:1.
For a 2:1 with the same issue is 44".
** You need to work on a freight door retiring cam. You LOTO the mainline
disconnect but there is still power to the cam. What circuit is still hot? -
CORRECT ANSWER - Mainline disconnect (535)
** The contractor requests that the vertical center of the Rack and Pinion hoist
be moved. How is this accomplished? - CORRECT ANSWER - Adjust Tie
downs/Wall ties (805)
** Working pressure on a Hydro is 400 PSI. What is the correct Relief Valve
Setting? - CORRECT ANSWER - 600 PSI Max. (805)
,400 psi x 150% = 600 psi
** A contractor wants to raise the car speed from 100 FPM to 125 FPM. It
currently has a 12" sheave. What size sheave is required? - CORRECT
ANSWER - 15"
(125 /100 = 1.25 1.25 x 12 = 15)
** There is slight arcing at the Brushes and Commutator. What actions must be
taken? - CORRECT ANSWER - None. (430)
"Heavy arcing is due to light brush pressure. Mechanical wear indicates heavy
brush pressure.
** 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.
** How many Strain Supports are required on a 350' raceway? - CORRECT
ANSWER - 4
One for every 100'
** How is Stainless steel drilled out? - CORRECT ANSWER - Slow speed
and constant pressure (205)
, ** What are the required amount of clips for Wedge Shackles and what is their
spacing? - CORRECT ANSWER - At least 2, with the first being 4 times the
diameter of the rope from the top of shackle.
Second is 8 times the diameter of the rope from the first.
** Car is loaded with 125% and sinks. Why? - CORRECT ANSWER -
Slipped through the brake.
** A 300 Ohm resistor burns out. You don't have a 300 Ohm resistor to replace
it. What can you use to make up the resistor? - CORRECT ANSWER - 2 600
Ohms resistors in Parallel. "The resistance is half of the highest rating in a
parallel circuit.
3, 225 Ohm resistors in parallel equal 75 Ohms.
** A 480 VAC Step Down Transformer is connected to a 3 phase rectifier. What
will the output be? - CORRECT ANSWER - 320 VDC
480 - 33.33% = 320
** If you find a broken or missing barricade, what do you do? - CORRECT
ANSWER - Write up a formal inspection request.
** If a Dumbwaiter has 9 square feet in Area,
4 ' High and the rated Capacity is 13.9 lb/ft3, what is the total capacity? -
CORRECT ANSWER - 500 lb/ft3.
"The area of a Dumbwaiter is 9 sq' max and is 4' High. Multiply that by 13.9.
9x4 = 36. 36 x 13.9 = 500
** What are the consequences of a misaligned Rack and Pinion hoist joint? -
CORRECT ANSWER - Broken Gear Teeth (850) Motor not aligned.
