EDM-A Questions - Test A

What eye protection is required for acetlyene.oxygen welding?

Burning Goggles

How many ties are applied to a splint for a fractured bone?

2

It is the intent of the workers compensation board to:

Aid the worker financially and in the pursuit of rehab

How must acteyle and oxygen tanks be stored?

upright, properly secured and protective valve caps in place

At 1é4 scale, an object 48 inches long will be drawn ____ inches long on a print:

12 inches

In figure 8, what prevents the oil from leaking out between the housing and the end cap?

o ring seal

A dynamic seal is used where one of the mmebers which the seal is in contact with:

moves relative to the other member.

What is the planed surface on the blade of a T-rail called?

Face

If rails are to be stored in an elevator pit, a _____ should be attached to the bottom end of each section of rail.

Fishplate

Tension of the governor rope is maintained by using a:

Tension sheave

What is the correct configuration for the installation of rope clips:

The clip is placed so that the base is on the load side of the rope and the U bolt is placed so that it bears on the dead end or short side of the rope

Rack and pinion machines may be used for which of the following applications:

Passenger and freight

WHat is the maximum permitted clearance from the non0access side of an enclosed vertical wheelchair lift *installed with min 1067 high side walls) to the runway enclosure:

100mm

On a wheelchair platform, what is provided on its lower and upper landing side to prvent roll-away of the wheelchair:

a gate or safety flap

In the elevator industry, is the reporting of an accident ot an accident to the director mandatory?

depends on the circumstances

when an accident occurs where serious injury or death result, which of the following procedures should be implemented first?

secrure the accident area to ensure nothing is duturbed or moved untiul permission is given by a supervisor

Gaurd plates for passenger and freight elevator equipped with levleing or truck zoning devices shal conform to the following except:

shall extend no more than narrowest landing door opening

approximately what is the rope drive sheave contact when double wrapping is used?

360 degrees

After a hoistway has been plumbed and its has been determined the elevator will fit properly, what is the next step in rail installation?

Install rail brackets

Brace rods are used for what purpose on the platform?

to prevent twisting of the platform

What is the main link between the hoistway walls or building strucural steel and the rails?

rail brackets

Who determines where the elevator mechanic in charge will store new elevator materials?

building contractor superintendant

How should rope tension be adjusted?

tightening the shackle rod nuts

What is the standard lenght of a T rail?

16 Feet

On high rise installations, rails are aligned usually in rail runs of 10 or 11 floors at a time, this is called?

Jumping

What is the purpose of a reverse phase relay in acontroller?

to protect equipment should the building phasing be altered

Which type of thread can 5/8-11 bolt be considered?

UNC

The largest valure of strength is?

Tensile

Pipe threads are cut _____ to ensure a seal.

Tappered

In some journal bearings, grooves cut in the bearing element are for the purpose of?>

lubrication

type _____ safeties have a freely rotating pinion, a governor,and a safety device mounted on the car. THe freely rotating pinion tavels on a stationary rack mointed on the hoistway structure

Type D safeties

What is the proper counterbalace ratio for an empty car?

counterweight heavier by 40% of rated load

What statment is accpetable for a proper interlock operation?

locks mechanically before electrically

What is the overall maximum length allowed by OHSA for a wooded 2'“ x 10” scaffold plank?

10 feet

When climbing a ladder, how should tools be raised?

a hauling rope

What hazards can be present when erecting scaffolding?

devris, loose soil, existing wiring

What is the most common type of scaffold in use today?

sectional tubular steel

what two components usually make up a tugger?

drive and capstan

which of the following planks, would support the greatest load?

2 × 12 on edge

if provisions of the codes governing elevating devices is inconsistent with the TSSA:

the provisions of the act and the regulations shall prevail

acceptance testing shall be done by ______ in the presence of an inspector employed by the regulatory authority:

the person or firm installing or altering the equipment

under which standard are handicapped devices in private residences covered?

CSA B613

which of the folloiwing rules is not correct?

double insulated saw must have a ground wire

where should tools and materials be stored on a service or construction site?

in a safe area designated by the job superintendant

what guidelines should be followed when writing reports of accidents or incidents

follow company procedures

what is a ushaped metal hoisting shackle with the ends drilled to recieve a pin or bolt called?

clevis

how many breaths per minute is required for an adult receiving mouth to mouth?

12-20

a lockwasher is used for the purpose of ?

preventing the nut from working loosewhat part

what part of the jack acts as a striking surface for the plunger stop ring?

head

what is another term for sch 80 pipe

extra strong wall pipealso known as schedule 80 pipe

what do some manufactures provide to assure proper joint tightness on multi-sectional plungers?

alignment marks

what is the maximum amount of oil allowed to be accumulated from the cylinder packing gland before the oil must be removed?

19L

the manually operatoer lowering valve on a hydraulic elevator should lower the car at a speed of?

.10 m/s

Burst pressure of a flexible hose used for hydraulic elevators appears:

printed on the hose jacket

in a hydraulic elevator a shutoff valve is used for the purpose of?

testing and servicing the hydraulic system

hydraulic elevators are caused to run in the up direction as a result of?

oil under pressure being forced into the jack unit

the pressure difference across the pump in hydraulic elevators, single stage jack units are usually of the?

piston type

the size and schedule number of pipe to be used for hydraulic elevator installation should be obtained from?

the engineering department

in a roped hydraulic elevator, the plunger speed is that of the elevator speed?

half of the speed of the elevator due to the mechanical advantage of the pulley system.

single stage, holeless hydraulic elevator jack units are usually?

of the displacement type

the replacement of a hydraulic plunger or cylinder is considered?

replacement under minor alterations

what must be adjusted after a major cab renovation on a hydraulic elevator that involves a weight differential?

relief pressure

the purpose of the flow control deice in a hydraulic system is to?

control the rate of oil flow in a hydraulic system

three stage telescopic jacks must?

have all three stages guided

the component of an ac operated relay or contactor core which prevents the device from buzzing at 60 hz is called the?

shading coil

voltages and currents given on equipment data plates and in code books are all valued as?

effective or RMS

when a voltmeter is connected in a circuit in the place of an ammeter, the following will be observed:

the circuit may not operate as intended

an ohmmeter will measure?

the resistance of a resistor which is not connected in a circuit

an inductance in a circuit causes the current to ______ the applied voltage:

lag

when using grooved pipe couplings, how should the connection be made up?

maintain about 1/8" gap to prevent stress.

what is the term used to describe fittings that are installed without threading the pipe?

grooved

before servicing a capacitor, what procedure must be followed?

discharge

hydraulic components seals can generally be categorized as:

static and dynamic

the b44 code specifies that a relief valve shall be sized to pass the maximum rated capacity of the pump, without raising the pressure more the ____ above the working pressure:

50%

the usual type of oil distribution system for hydraulic elevators is:

steel pipe

as minimum, felxible hose for hydraulic elevators must meet the following spec?

type R2 of SAE standard J517

the term “total AC resistance” can also be called:

impedance

an osculloscopre is used to measure?

the period of a waveform

a single phase transformer is rated 600 VA. if the secondary voltage is 120 volt, then the secondary rated current will be?

5 amps

the purpose of a disconnect switch is to:

provide a means of electrically isolating equipment for the purpose of installation, repair, or maitnence

why are taps used on a transformer?

to change the transofmer turns ratio

the power rating of a transformer is given in units of?

volts amps or VA

rubber pads are placed under the generator to reduce or eliminate?

noise and vibration

a 2 speed AC motor is also called?

a split phase motor

the material used for contacts of modern power relays and contactors is?

silver cadmium oxide

the difference between a tachometer and an encoder is?

a tachometer provides an analog signal: a encoder provides a digital signaldifferent types of feedback signals.

the three electrodes of a transistor are?

collector, base and emitter

the system of speed control, where the motor and generator armatures are connected in a loop is called?

the ward-leonard system

a half wave rectifier is accomplished with?

a signle diode

when a drive detects a fault, the problem can be identified using?

the built in diagnostic feature

the power of an electric motor is given in units of?

horsepower or kilwatts

a miniumum wire gauge number for power type conductors is?

#14American Wire Gauge (AWG)

the component of a DC machine which continuously switches armature coils to the external circuit is called?

commutator

once conduction through an SCR begins, the only way it can be turned off?

reduce the current to zero

before performing any task after a “lock out” and “tag out” procedure, what must be done?

verify no power to the elevator

the pit access lader should be approx how high above the landing level?

1200mm

the loss of traction created between the hoist ropes and the machine driver when the counterweight lands on its buffer avoids?

the elevator car being pulled into the overhead

if a hoist machine has a load capacity of 2000lbs with 2: roping, the load capacity with 1:1 roping would be?

1000 lbs

for what period do logbooks have to be posted in elevator machine rooms or in central control station?

five years

on a properly adjusted governor, in what order should th eoversped switch and the safety jaw trip in?

overspeed switch then safety switch