Elevator Mechanic Exam Review| 216 Questions| With Complete Solutions
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"
École, étude et sujet
- Établissement
- Elevator
- Cours
- Elevator
Infos sur le Document
- Publié le
- 8 juin 2023
- Nombre de pages
- 30
- Écrit en
- 2022/2023
- Type
- Examen
- Contient
- Questions et réponses
Sujets
-
elevator mechanic exam review| 216 questions| with
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