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Exam (elaborations)

Elevator Mechanic Exam Review| 216 Questions| With Complete Solutions

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A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12" sheave. What sheave is required? correct answer: Diam=12" 12/4=3" 25fpm=3" 100fpm + 25fpm= 12"+3"= 15" sheave A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or resistance. What should you do? correct answer: Replace it with a larger MOV On a Ward-Leonard circuit the break is set, but the motor is trying to slip through the break. What is the issue? correct answer: Suicide Circuit You have an old DC motor and are adding an SCR drive, what do you do to the interpoles? correct answer: 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 A hydro runs up with no load, but will not run with a full load. What is the issue? correct answer: The relief valve is set too low 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? correct answer: 22"

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Institution
Elevator
Module
Elevator










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Institution
Elevator
Module
Elevator

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Uploaded on
June 8, 2023
Number of pages
30
Written in
2022/2023
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