Elevator Mechanic Exam | Review 2022 Questions with 100% Correct Answers | COMPLETE SOLUTION
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Course
Elevator mechanic
Institution
Oxford University (OX)
Elevator Mechanic Exam
A Latching relay: Used for call registration,direction selection or as selector relays
Two types are: Set/Rest are electrical and Mechanical Latching relays
Need to know latching relay symbol, Its a box with shaded triangle in lower right hand corner. CORRECT ANSWERWh...
elevator mechanic exam | review 2022 questions with 100 correct answers | complete solution
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Elevator mechanic
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Elevator Mechanic Exam
A Latching relay: Used for call registration,direction selection or as selector relays
Two types are: Set/Rest are electrical and Mechanical Latching relays
Need to know latching relay symbol, Its a box with shaded triangle in lower right hand corner. CORRECT
ANSWERWhich relay do you need to Order
710 Pg, 7
RPM = 60 ∙ ƒ ÷ P÷2 =
Step 1. 60 x Frequency (Hz.) =
Step 2. Poles ÷ 2 =
Take answer 1 and ÷ by answer 2 = CORRECT ANSWERKnow the formula for RPM
435 Pg. 5
If you are referring to a megohm meter, it is a test of the insulation properties of such things as electric
wiring, motor windings and high power antenna mounts.
We use a "megger" or "meg out" electrical wiring and equipment to see if it is shorted to ground or the
frame in any way.
The megger uses much higher voltages to check resistance than a normal Volt-ohm meter.
Minimum resistance is 1 Meg Ohm CORRECT ANSWERKnow what a Megger is and what it does
636 Pg. 13
,(1) A parallel connection. (2) A resistive element placed across the terminals of an armature to bypass a
portion of the current. (3) A flexible electrical conductor designed to conduct current around the
mechanical joint between two conductors. (4) The resistive element (Usually of very low resistance)
used in parallel with a DC ammeter movement to bypass a calibrated portion of the total circuit current.
CORRECT ANSWERShunt Overloads
425 All Pages
Bad Ground CORRECT ANSWERYou are using a Temp Run Box and you get shocked! Why!
520 Pg. 4
The bridle hitch can consist of two,three, or four single hitches (fig. 3-22), used together to form a bridle
hitch for hoisting an object
A sling with two legs used to lift a 1,000 pound object will have 500 pounds of the load on each leg when
the sling angle is 90 degrees. The load stress on each leg increases as the angle decreases; and if the
sling angle was 30 degrees lifting the same 1,000 pound object, the load will be 1,000 pounds on each
leg. Try to keep all sling angles greater than 45 degrees; sling angles approaching 30 degrees are
considered extremely hazardous and must be avoided at all cost. CORRECT ANSWERBridal Hitch
128 Pg 17
Scaffolding should be tied to the structure using
#9 wire or tie-in devices. The first vertical tie
should be at the maximum height of 4 times the
narrowest base dimension. Additional ties are not
to exceed 26' vertically. Maximum horizontal
distance between ties is not to exceed 30'. CORRECT ANSWERScaffolding, You have 32' of rise, you are
using 3x5 scaffolding. Where will the tie off points be ?
140 PG. 287-288
,Counterweights (Typically) are hung to counter balance the weight of the car PLUS 40% of Capacity
Load. CORRECT ANSWERHow much should Counterweight way?
240 Pg. 14
Note: We do not use wire smaller than #20 in travelling cables and #24 outside travelers.
Largest wires are feeders to Hoist /Pump motor
We always have 10 % spares
10% of 52 = 5.2
On a calculator Multiply the percent 10 by the number you have and ÷ by 100
10 X 52 ÷ 100 = 5.2 CORRECT ANSWERPulling Spare Wires (Example) 10% of 52 Wires
515 Pg.26
The correct lube must be used on chains. CORRECT ANSWERThe freight door motor is spinning but the
door wont move, Why?
No Riders CORRECT ANSWERRead Lula and Dumb waiters
545 Pg 1
You never get on top and you work only partially in with the main line OFF CORRECT ANSWERIf you get
on top of Dumbwaiter what must be done?
545 Pg 14
Notes:(Pi) π is 3.1416 and 231 Cubic inches to the Gallon
Area:
Remember to ÷ 6" ÷ 2 = 3 to get Radius
Area = π∙ r²
Area = 3.1416 x 3 x 3 = 28.27 inches or 3.146 x 9 = 28.27
Volume
Multiple are times height to solve for Volume
V = A∙H
V = 28.27 x 300 (25" feet x 12" = 300)
V = 8481 Cubic Inches
Since we already know there are 231 cubic inches to the gallon
8481 ÷ 231 = 36.71 Gallons CORRECT ANSWERPSI Formula and Gallons (Example) How much oil to move
a 6" jack 25'
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