QUESTIONS AND CORRECT DETAILED ANSWERS|
ALREADY GRADED A+
Hydro elevators in low rise applications do not need an _____ _____ room. -
ANSWER: overhead machine
Some advantages of hydros are lower equipment and building construction costs
because the load of a hydro is carried to the _____ where as the load of a traction
car is carried by the _____ _____. - ANSWER: ground, building structure
When drilling the jack hole, the only proper way to determine if the hole is plumb is
to remove the drill stem and bit and use a _____ _____. - ANSWER: Spider Bob
To plumb the hole, a spider bob is attached to a length of piano wire suspended from
as near as possible to the top of the _____ or from a fixed point on the drill rig. -
ANSWER: Hoistway
When welding a joint, lay _____ inch tack welds _____ degrees apart, shift it 90
degrees and lay two more 1 inch tack welds 180 degrees apart. - ANSWER: 1, 180
On power units having the motor beneath the tank, the pump may be either _____
driven or _____ coupled. - ANSWER: belt, direct
The purpose of the _____/_____ is to silence the effect of any pulsations in the
pump output and should be as close to the pump as possible. - ANSWER: silencer,
muffler
On Bolsters/Bolster Assembly, the plunger is fastened to the _____ _____ which is
then mounted to the center of the Bolster Assembly. - ANSWER: platen plate
With wye-delta, reduced current starting is accomplished without the need for
_____. - ANSWER: resistors
_____ run buttons should run the platform and sling at leveling speeds only. -
ANSWER: Temporary
A _____ _____ consists of a piston held closed by an adjustable spring and must
open at a certain pressure to prevent any further increase in pressure. - ANSWER:
relief valve
A _____ lowering valve allows the car to be lowered at a speed not exceeding 20fpm
in case of power failure. - ANSWER: manual
, As the oil temperature changes, the _____ will change as well and will effect the
performance, more specifically, the leveling and approach of the elevator. -
ANSWER: viscosity
Be sure wellways are properly _____ to avoid accidental injury to you, your team or
anyone working outside of our industry. - ANSWER: barricaded
Barricades around the wellway must be _____ inches high and be capable of
withstanding a _____lb force. - ANSWER: 42, 200
A _____ protects you if you come in contact with a hot wire or component and then
come in contact with ground. It opens the circuit and diverts the supplied current to
ground. - ANSWER: GFCI
A _____ _____ is useful for horizontal (side-to-side) pulling of the truss while being
lowered into the wellway. - ANSWER: lever hoist
Code specifies the use of anti-slide devices if the outer edge of the deck is greater
than _____ inches from the center line of the handrail. - ANSWER: 12
(True/False) Anti-slide devices must be less than 3/4" in height, have no sharp
corners or edges and fastened to the deck no closer than 4 inches from the handrail
and spaced no greater than 6ft apart. - ANSWER: True
Sometimes referred to as sag switches, _____ _____ switches are located within the
step band of both upper and lower truss assemblies and function to prevent a step
that is sagging by more than _____ inch. - ANSWER: step level, 1/8
Per code, an installed escalator can exceed the 30 degree angle of inclination by
_____ degree. - ANSWER: 1
When it comes to moving walks code states that the angle of inclination of the truss
from the horizontal shall not exceed _____ degrees within _____ ft of the entrance
or exits and shall not exceed _____ degrees at any point. - ANSWER: 3, 3, 12
Belted walkways use a tensioning device at the tail end to maintain the proper
tension on the treadway belt and is normally maintained at _____ lbs. - ANSWER:
3000
(True/False) The speed governor switch on moving walks not driven by an induction
motor directly connected to the driving machine (aka AC squirrel cage), will cause
power to be removed from the motor and brake if the treadway speed exceeds a
predetermined value, not to exceed 20% of maximum designed speed. This device
shall be manually resettable. - ANSWER: True
Ensure comb segment teeth are set in the slots of the treadway deep enough so the
teeth are always _____ the upper surface of the treads. - ANSWER: below