Comprehensive Review with Over 400 Practice
Questions and Answer (4 Full-Length Exams)
Practice1
1. A contractor wants to raise the car speed from 100fpm to 125fpm, it cur-
rently has a 12" sheave. What sheave is required
Ans>> Diam=12" 12/4=3" 25fpm=3" 100fpm + 25fpm= 12"+3"= 15" sheave
2. 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
3. On a Ward-Leonard circuit the break is set, but the motor is trying to slip
through the break. What is the issue
,Ans>> Suicide Circuit
4. 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
5. 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
6. 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"
7. 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/ Main Line Disconnect
8. 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
9. Working pressure on a Hydro is 400psi. What is the maximum relief valve
setting
Ans>> 400psi x 150%= 600psi
10. What must be installed on a false car before operation
Ans>> Spring Loaded Safeties.
11. There is slight arcing between the brush and commutator. What action
must be taken
Ans>> None.
Heavy arcing=Light brush pressure. Heavy bush pressure=mechanical wear
12. If rigging gear is roped 3:1 and a BEAM CLAMP is used to lift a 6,000lb load.
What is the beam capacity
Ans>> 18,000lbs. Beam capacity is cut in half with use of clamp, when rigging all
blocks, rope, and clamps will be Equal to the lowest load rating
13. How much resistance is measured over a normally closed switch
Ans>> -
, 1.2ohms. should be zero, but will never be that low
14. 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
15. How is a class 1 yearly buffer test preformed
Ans>> Car at bottom landing and on inspection, jump out direction and final
limits. With pit clear, run down to compress buffers, buffers should fully extend
within 90 seconds.
5yr: Full load Full speed
CWT: Full speed Empty
16. How many strain supports are required on a 350ft raceway
Ans>> 4. 1 every 100ft
17. How is stainless steel drilled out
Ans>> Slow speed and constant pressure
18. What is the required amount of retainer clips for wedge shackles and what is
the spacing