Mechanics Exam
Study online at https://quizlet.com/_8vf8js
1. ** An MOV burns out, you replace it Replace it with a larger one (630)
but cannot read voltage or resistance.
What should you do?
2. * On a Ward-Leonard circuit, the Suicide circuit (425)
brake is set but the motor is trying to
slip through the brake. What circuit is
the issue?
3. ** A Hydro runs up with no load but The relief valve is set too low (805)
does not run up with a full load. What
is the issue?
4. ** Runby for a 1:1 car hits the CWT 22" for 1:1.
buffer 4" below the top landing. The For a 2:1 with the same issue is 44".
CWT runby should be set at 18". How
much should the ropes be shortened?
5. ** You need to work on a freight door Mainline disconnect (535)
retiring cam. You LOTO the mainline
disconnect but there is still power to
the cam. What circuit is still hot?
6. ** The contractor requests that the Adjust Tie downs/Wall ties (805)
vertical center of the Rack and Pinion
hoist be moved. How is this accom-
plished?
7. ** Working pressure on a Hydro is 400 600 PSI Max. (805)
PSI. What is the correct Relief Valve 400 psi x 150% = 600 psi
Setting?
8.
, Mechanics Exam
Study online at https://quizlet.com/_8vf8js
** A contractor wants to raise the car 15"
speed from 100 FPM to 125 FPM. It (125 /100 = 1.25 1.25 x 12 = 15)
currently has a 12" sheave. What size
sheave is required?
9. ** There is slight arcing at the Brush- None. (430)
es and Commutator. What actions "Heavy arcing is due to light brush pressure. Me-
must be taken? chanical wear indicates heavy brush pressure.
10. ** How much resistance is normally 1.2 ohms or 1 to 2 ohms
measured across a normally closed
switch ?
11. ** A car traveling in the hoistway al- Traveling cable has a cut or short
ways stops at the same point and
blows a fuse. What is the problem?
12. ** How is a Class 1 (yearly) buffer test At slow speed and the buffer must return in 90
performed? 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.
13. ** How many Strain Supports are re- 4
quired on a 350' raceway? One for every 100'
14. ** How is Stainless steel drilled out? Slow speed and constant pressure (205)
15. ** What are the required amount of At least 2, with the first being 4 times the diameter
clips for Wedge Shackles and what is of the rope from the top of shackle.
their spacing? Second is 8 times the diameter of the rope from
the first.
, Mechanics Exam
Study online at https://quizlet.com/_8vf8js
16. ** Car is loaded with 125% and sinks. Slipped through the brake.
Why?
17. ** A 300 Ohm resistor burns out. You 2 600 Ohms resistors in Parallel. "The resistance is
don't have a 300 Ohm resistor to re- half of the highest rating in a parallel circuit.
place it. What can you use to make up 3, 225 Ohm resistors in parallel equal 75 Ohms.
the resistor?
18. ** A 480 VAC Step Down Transformer 320 VDC
is connected to a 3 phase rectifier. 480 - 33.33% = 320
What will the output be?
19. ** If you find a broken or missing bar- Write up a formal inspection request.
ricade, what do you do?
20. ** If a Dumbwaiter has 9 square feet 500 lb/ft3.
in Area, "The area of a Dumbwaiter is 9 sq' max and is 4'
4 ' High and the rated Capacity is 13.9 High. Multiply that by 13.9.
lb/ft3, what is the total capacity? 9x4 = 36. 36 x 13.9 = 500
21. ** What are the consequences of Broken Gear Teeth (850) Motor not aligned.
a misaligned Rack and Pinion hoist
joint?
22. ** You enter a Pit where toxic fumes Follow proper procedures.
are present. How do you proceed? "Confined Space entry procedures are now guided
by OSHA for pit entry".
23. ** When changing a 1:1 car rated at 300 FPM and 4000 lb capacity.
600 FPM and 2000 lb capacity to a 2:1, "Halves the speed and doubles the capacity ".
what will the new ratings be?
24. Deduct 1/4".
( 3/4" ) is needed.
Study online at https://quizlet.com/_8vf8js
1. ** An MOV burns out, you replace it Replace it with a larger one (630)
but cannot read voltage or resistance.
What should you do?
2. * On a Ward-Leonard circuit, the Suicide circuit (425)
brake is set but the motor is trying to
slip through the brake. What circuit is
the issue?
3. ** A Hydro runs up with no load but The relief valve is set too low (805)
does not run up with a full load. What
is the issue?
4. ** Runby for a 1:1 car hits the CWT 22" for 1:1.
buffer 4" below the top landing. The For a 2:1 with the same issue is 44".
CWT runby should be set at 18". How
much should the ropes be shortened?
5. ** You need to work on a freight door Mainline disconnect (535)
retiring cam. You LOTO the mainline
disconnect but there is still power to
the cam. What circuit is still hot?
6. ** The contractor requests that the Adjust Tie downs/Wall ties (805)
vertical center of the Rack and Pinion
hoist be moved. How is this accom-
plished?
7. ** Working pressure on a Hydro is 400 600 PSI Max. (805)
PSI. What is the correct Relief Valve 400 psi x 150% = 600 psi
Setting?
8.
, Mechanics Exam
Study online at https://quizlet.com/_8vf8js
** A contractor wants to raise the car 15"
speed from 100 FPM to 125 FPM. It (125 /100 = 1.25 1.25 x 12 = 15)
currently has a 12" sheave. What size
sheave is required?
9. ** There is slight arcing at the Brush- None. (430)
es and Commutator. What actions "Heavy arcing is due to light brush pressure. Me-
must be taken? chanical wear indicates heavy brush pressure.
10. ** How much resistance is normally 1.2 ohms or 1 to 2 ohms
measured across a normally closed
switch ?
11. ** A car traveling in the hoistway al- Traveling cable has a cut or short
ways stops at the same point and
blows a fuse. What is the problem?
12. ** How is a Class 1 (yearly) buffer test At slow speed and the buffer must return in 90
performed? 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.
13. ** How many Strain Supports are re- 4
quired on a 350' raceway? One for every 100'
14. ** How is Stainless steel drilled out? Slow speed and constant pressure (205)
15. ** What are the required amount of At least 2, with the first being 4 times the diameter
clips for Wedge Shackles and what is of the rope from the top of shackle.
their spacing? Second is 8 times the diameter of the rope from
the first.
, Mechanics Exam
Study online at https://quizlet.com/_8vf8js
16. ** Car is loaded with 125% and sinks. Slipped through the brake.
Why?
17. ** A 300 Ohm resistor burns out. You 2 600 Ohms resistors in Parallel. "The resistance is
don't have a 300 Ohm resistor to re- half of the highest rating in a parallel circuit.
place it. What can you use to make up 3, 225 Ohm resistors in parallel equal 75 Ohms.
the resistor?
18. ** A 480 VAC Step Down Transformer 320 VDC
is connected to a 3 phase rectifier. 480 - 33.33% = 320
What will the output be?
19. ** If you find a broken or missing bar- Write up a formal inspection request.
ricade, what do you do?
20. ** If a Dumbwaiter has 9 square feet 500 lb/ft3.
in Area, "The area of a Dumbwaiter is 9 sq' max and is 4'
4 ' High and the rated Capacity is 13.9 High. Multiply that by 13.9.
lb/ft3, what is the total capacity? 9x4 = 36. 36 x 13.9 = 500
21. ** What are the consequences of Broken Gear Teeth (850) Motor not aligned.
a misaligned Rack and Pinion hoist
joint?
22. ** You enter a Pit where toxic fumes Follow proper procedures.
are present. How do you proceed? "Confined Space entry procedures are now guided
by OSHA for pit entry".
23. ** When changing a 1:1 car rated at 300 FPM and 4000 lb capacity.
600 FPM and 2000 lb capacity to a 2:1, "Halves the speed and doubles the capacity ".
what will the new ratings be?
24. Deduct 1/4".
( 3/4" ) is needed.
