ANSWERS RATED A+
✔✔Per code, where the actuation of the safeties is by a governor, the safety shall be
set at a maximum speed of _____ fpm - ✔✔75
✔✔With platform lifts, the _____ is referring to the space occupied by the lifts' travel
whether it is enclosed, partially enclosed or open construction. - ✔✔Runway
✔✔Routine tests and inspections are to be made every _____ months for LULA's in
buildings other than private residences and every _____ for private residences. - ✔✔6,
year
✔✔What is the minimum height of a barricade in place around an open wellway? -
✔✔42"
✔✔What is the maximum angle of inclination for moving walks? - ✔✔12 degrees
✔✔The major advantage of a hydraulic elevator is that it __________ _________
building structural support. - ✔✔requires less
✔✔What would be the effect of increasing the size of the oil line if all other elements in
a hydraulic elevator system remain the same? - ✔✔Rate of flow is increased
✔✔A __________ __________ is used to check a jack hole for plumb. - ✔✔spider bob
✔✔What is the operating pressure of a hydraulic elevator with a gross weight of 1500
pounds and a plunger area of 15 square inches? - ✔✔100 psi
✔✔One gallon equals __________ cubic inches. - ✔✔231
✔✔Why is it important to follow a welding procedure using a sequence of short welds
on opposite sides of the cylinder? - ✔✔To prevent warping the cylinder
✔✔If all other elements in a hydraulic elevator system remain the same, what would be
the effect of reducing the diameter of the plunger? - ✔✔Higher system pressure
✔✔How do you prevent rusting of the plunger if the jack unit is installed in the well hole
long before the elevator will be completed? - ✔✔Fill it with oil
✔✔(True/False)The pressure relief valve is operated electronically. - ✔✔False
, ✔✔What prevents the plunger from leaving the cylinder? - ✔✔The stop ring
✔✔The advantage of wye-delta starting is what? - ✔✔Starting current is lower
✔✔A __________ cushions pulsations in the oil caused by the pump. - ✔✔silencer
✔✔You can lower a hydraulic elevator without power by using the __________
__________ __________. - ✔✔manual lowering valve
✔✔The __________ __________ assembly supports the platform of a hydraulic
elevator. - ✔✔bolster channel
✔✔It is necessary to run a ground wire to the car sling of a hydraulic elevator to prevent
what? - ✔✔electrical shock
✔✔What condition will trip a GFCI? - ✔✔If a supply lead is shorted to ground
✔✔When using a beam clamp, a good rule of thumb is to never load the lower flange to
more than __________ % of the load which could be handled by the full area of the
beam. - ✔✔50
✔✔1 lb equals how many Kg? - ✔✔.4536
✔✔2,000 Kg = __________ lbs - ✔✔4,409
✔✔What is the best rigging equipment to use for controlling horizontal movement of the
escalator as it is being lifted into position in the wellway? - ✔✔lever hoist
✔✔What is the most common shackle used? - ✔✔Screw pin bow type
✔✔The angle of inclination can __________ 30 degrees by a maximum of __________
degrees at the installation site. - ✔✔exceed; 1
✔✔The maximum distance between anti-slide devices on an escalator is what? - ✔✔6'
✔✔What happens if a step of an escalator drops more than 1/8"? - ✔✔The escalator
stops automatically
✔✔Combplate teeth must be set to ensure the teeth are always __________ the
__________ surface of the treads. - ✔✔below; upper
✔✔What is the maximum allowable gap between the skirt panels on an escalator and
the adjacent step tread? - ✔✔3/16"