問題一覧
1
The term ‘dykes’ is the:
slang name for diagonals used for cutting small wire
2
The three types of wrenches are:
Open end, combination and box end
3
Adjustable end wrenches (crescent) are used for:
Such as oil check plugs, inspection covers and sheet metal bolts
4
Torque wrenches are:
Required where the torque is critical and often specified by the manufacturer
5
The units of torque measurement are:
in-lbf, ft-lbf, N-m and sometimes Kg-m
6
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
7
Pipe wrenches are designed to be used on:
Round surfaces, such as pipe and fittings by gripping and cutting into the surface
8
Hex wrenches often called ‘Allen’ wrenches are available in:
both imperial and metric sizes
9
The maintenance technician should carry in:
tool case (box) or hand held tool pouch
10
The danger in using a mushroom punch or chisels is that:
Pieces may break off when struck and become embedded in the skin
11
A screwdriver is designed and intended to be used:
To turn screws only
12
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
13
When using electric power tools:
GFCI protection is required
14
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
15
The three types of wire rope cutters are:
impact, shear and hydraulic press
16
Bearing heaters used to heat bearing for a shrink fit on shafts operate by:
inducting electricity eddy current into the bearing
17
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
18
Empty acetylene and oxygen cylinder are marked:
MT
19
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
20
A digital tachometer:
Cannot be used to check/set Governor tripping speed
21
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
22
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
23
A dynamometer is used to measure:
governor rope pull through force
24
What type of fire extinguisher is required to be readily accessible where welding is being performed?
ABC type minimum 2A:20BC rating
25
When melting Babbitt, the following equipment may be used:
an electric heating pot especially designed for the purpose
26
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
27
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)
28
Digital multimeter specification indicates that if it is true RMS:
It will provide accurate voltage and current readings for any AC wave form
29
A hammer drill with a carbide bit is used for:
Drilling masonry, such as concrete or bricks
30
A spirit level accuracy can be checked by:
rotating it 180 degrees on any flat surface
31
Instruments for measuring acceleration, deceleration, jerk, and speeds.
Are very helpful instruments for the Elevator technician to use in adjusting and diagnosing problems