Elevator Mechanic Exam Prep Questions with Complete Solutions Know the formula for RPM - Correct Answers ✅RPM = 60 ∙
ƒ ÷ P÷2 =
Step 1. 60 x Frequency (Hz.) = Step 2. Poles ÷ 2 = Take answer 1 and ÷ by answer 2 = You are using a Temp Run Box and you get shocked! Why!520 Pg. 4 - Correct Answers ✅Bad Ground Scaffolding, You have 32' of rise, you are using 3x5 scaffolding. Where will the tie off points be ?140 PG. 287-288 - Correct Answers ✅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'.How much should Counterweight way? 1 / 4
Elevator Mechanic Exam Prep Questions with Complete Solutions 240 Pg. 14 - Correct Answers ✅Counterweights (Typically) are hung to counter balance the weight of the car PLUS 40% of Capacity Load.Pulling Spare Wires (Example) 10% of 52 Wires
515 Pg.26 - Correct Answers ✅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
The freight door motor is spinning but the door wont move, Why?535 Pg. 9 - Correct Answers ✅The correct lube must be used on chains.Read Lula and Dumb waiters 2 / 4
Elevator Mechanic Exam Prep Questions with Complete Solutions
545 Pg 1 - Correct Answers ✅Lula: Limited use/Limited
Access (Example Wheelchair Lifts) Max Rise 25' Max Speed 30 Ft/Min Max Capacity 1400 Lbs.Max Platform Area 18 Sq/Ft.
Residential Elevator:
Max Rise 50 ' Max Speed 40 Ft/min Max Capacity 940 Lbs.Max Platform Area 19 Sq/Ft 840 Pg 2
Dumbwaiters:
Platform limited to 9 Sq/Ft Inside height is limited to no more than 4 Feet Capacity is limited to 500Lbs No Riders If you get on top of Dumbwaiter what must be done?545 Pg 14 - Correct Answers ✅You never get on top and you work only partially in with the main line OFF 3 / 4
Elevator Mechanic Exam Prep Questions with Complete Solutions PI Formula and Gallons (Example) How much oil to move a 6" jack 25'
815 Pg 10 - Correct Answers ✅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 Relief valve working pressure - Correct Answers ✅Relief Valve is set at 150% working pressure
SCR Example:
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