NEIEP 500 FINAL EXAM SCRIPT
COMPLETE QUESTIONS AND ANSWERS
VERIFIED FULL SOLUTION
⩥ * On a Ward-Leonard circuit, the brake is set but the motor is
trying to slip through the brake. What circuit is the issue?
Answer: Suicide circuit (425)
⩥ ** A Hydro runs up with no load but does not run up with a
full load. What is the issue?
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?
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?
,Answer: Mainline disconnect (535)
⩥ ** The contractor requests that the vertical center of the Rack
and Pinion hoist be moved. How is this accomplished?
Answer: Adjust Tie downs/Wall ties (805)
⩥ ** Working pressure on a Hydro is 400 PSI. What is the
correct Relief Valve Setting?
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?
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?
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 ?
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?
Answer: Traveling cable has a cut or short
⩥ ** How is a Class 1 (yearly) buffer test performed?
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?
Answer: 4
One for every 100'
⩥ ** How is Stainless steel drilled out?
, Answer: Slow speed and constant pressure (205)
⩥ ** What are the required amount of clips for Wedge Shackles
and what is their spacing?
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?
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?
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?
Answer: 320 VDC
480 - 33.33% = 320
COMPLETE QUESTIONS AND ANSWERS
VERIFIED FULL SOLUTION
⩥ * On a Ward-Leonard circuit, the brake is set but the motor is
trying to slip through the brake. What circuit is the issue?
Answer: Suicide circuit (425)
⩥ ** A Hydro runs up with no load but does not run up with a
full load. What is the issue?
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?
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?
,Answer: Mainline disconnect (535)
⩥ ** The contractor requests that the vertical center of the Rack
and Pinion hoist be moved. How is this accomplished?
Answer: Adjust Tie downs/Wall ties (805)
⩥ ** Working pressure on a Hydro is 400 PSI. What is the
correct Relief Valve Setting?
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?
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?
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 ?
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?
Answer: Traveling cable has a cut or short
⩥ ** How is a Class 1 (yearly) buffer test performed?
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?
Answer: 4
One for every 100'
⩥ ** How is Stainless steel drilled out?
, Answer: Slow speed and constant pressure (205)
⩥ ** What are the required amount of clips for Wedge Shackles
and what is their spacing?
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?
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?
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?
Answer: 320 VDC
480 - 33.33% = 320
