問題一覧
1
When using electric power tools:
GFCI protection is required
2
Empty acetylene and oxygen cylinder are marked:
MT
3
What type of fire extinguisher is required to be readily accessible where welding is being performed?
ABC type minimum 2A:20BC rating
4
The danger in using a mushroom punch or chisels is that:
Pieces may break off when struck and become embedded in the skin
5
Pipe wrenches are designed to be used on:
Round surfaces, such as pipe and fittings by gripping and cutting into the surface
6
A dynamometer is used to measure:
governor rope pull through force
7
A scale used for measuring brush force read two LBF .8 oz. The brush is 1-1/4 inches wide and 1/2 inch thick. What is the brush pressure?
4 psi
8
When melting Babbitt, the following equipment may be used:
an electric heating pot especially designed for the purpose
9
When welding on any elevator part on which the support of the Elevator is dependent:
The welding design must be performed by a professional engineer, and the welder meet the qualification in the design
10
The three types of wire rope cutters are:
impact, shear and hydraulic press
11
Digital multimeter specification indicates that if it is true RMS:
It will provide accurate voltage and current readings for any AC wave form
12
When a power forklift truck is used, the operator must:
Have training in the proper use of the equipment and know it’s cap capacity
13
Pressure gauges used to check the working pressure and relief valve setting on hydraulic elevators must:
The liquid filled or have an in-line snubber and have calibration checked at least annually
14
Bearing heaters used to heat bearing for a shrink fit on shafts operate by:
inducting electricity eddy current into the bearing
15
The term ‘dykes’ is the:
slang name for diagonals used for cutting small wire
16
The maintenance technician should carry in:
tool case (box) or hand held tool pouch
17
If a force of 20 LBF is placed on the end of a wrench that is 1.5 feet long a torque of ______ would develop
30 ft-Lbf
18
The three types of wrenches are:
Open end, combination and box end
19
A spirit level accuracy can be checked by:
rotating it 180 degrees on any flat surface
20
A digital tachometer:
Cannot be used to check/set Governor tripping speed
21
A hammer drill with a carbide bit is used for:
Drilling masonry, such as concrete or bricks
22
Torque wrenches are:
Required where the torque is critical and often specified by the manufacturer
23
Instruments for measuring acceleration, deceleration, jerk, and speeds.
Are very helpful instruments for the Elevator technician to use in adjusting and diagnosing problems
24
The units of torque measurement are:
in-lbf, ft-lbf, N-m and sometimes Kg-m
25
A screwdriver is designed and intended to be used:
To turn screws only
26
If the correct tools for the job are not on hand, the technician should:
Obtain the correct tool and fix it right the first time
27
Digital multimeter with auto ranging a set on the Delta scale and has a reading of 2 M delta, this indicates a resistance of:
2,000,000 ohms
28
Hex wrenches often called ‘Allen’ wrenches are available in:
both imperial and metric sizes
29
Adjustable end wrenches (crescent) are used for:
Such as oil check plugs, inspection covers and sheet metal bolts
30
The door force gave is used to:
Measure the door closing force after the door has stopped between 1/3 and 2/3 of its travel
31
Security and protection of elevator equipment stored at the job site is the responsibility of:
The elevator superintendent and every elevator person working on the job(technicians, helpers and supervisors)