Elevator Mechanic EXAM QUESTIONS AND
ANSWERS | LATEST UPDATE | INSTANT
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Terms in this set (183)
A Latching relay: Used for call Which relay do you need to Order
registration,direction selection or as
selector relays 710 Pg, 7
Two types are: Set/Rest are electrical
and Mechanical Latching relays
Need to know latching relay symbol,
Its a box with shaded triangle in
lower right hand corner.
RPM = 60 ∙ ƒ ÷ P÷2 = Know the formula for RPM
Step 1. 60 x Frequency (Hz.) =
Step 2. Poles ÷ 2 = 435 Pg. 5
Take answer 1 and ÷ by answer 2 =
,If you are referring to a megohm Know what a Megger is and what it does
meter, it is a test of the insulation
properties of such things as electric 636 Pg. 13
wiring, motor windings and high
power antenna mounts.
We use a "megger" or "meg out"
electrical wiring and equipment to
see if it is shorted to ground or the
frame in any way.
The megger uses much higher
voltages to check resistance than a
normal Volt-ohm meter.
Minimum resistance is 1 Meg Ohm
(1) A parallel connection. (2) A Shunt Overloads
resistive element placed across the
terminals of an armature to bypass a 425 All Pages
portion of the current. (3) A flexible
electrical conductor designed to
conduct current around the
mechanical joint between two
conductors. (4) The resistive element
(Usually of very low resistance) used
in parallel with a DC ammeter
movement to bypass a calibrated
portion of the total circuit current.
Bad Ground You are using a Temp Run Box and you get
shocked! Why!
520 Pg. 4
, The bridle hitch can consist of Bridal Hitch
two,three, or four single hitches (fig.
3-22), used together to form a bridle 128 Pg 17
hitch for hoisting an object
A sling with two legs used to lift a
1,000 pound object will have 500
pounds of the load on each leg
when the sling angle is 90 degrees.
The load stress on each leg
increases as the angle decreases;
and if the sling angle was 30 degrees
lifting the same 1,000 pound object,
the load will be 1,000 pounds on
each leg. Try to keep all sling angles
greater than 45 degrees; sling angles
approaching 30 degrees are
considered extremely hazardous and
must be avoided at all cost.
Scaffolding should be tied to the Scaffolding, You have 32' of rise, you are using 3x5
structure using scaffolding. Where will the tie off points be ?
#9 wire or tie-in devices. The first
vertical tie 140 PG. 287-288
should be at the maximum height of
4 times the
narrowest base dimension. Additional
ties are not
to exceed 26' vertically. Maximum
horizontal
distance between ties is not to
exceed 30'.
Counterweights (Typically) are hung How much should Counterweight way?
to counter balance the weight of the
car PLUS 40% of Capacity Load. 240 Pg. 14
ANSWERS | LATEST UPDATE | INSTANT
DOWNLOAD
Save
Terms in this set (183)
A Latching relay: Used for call Which relay do you need to Order
registration,direction selection or as
selector relays 710 Pg, 7
Two types are: Set/Rest are electrical
and Mechanical Latching relays
Need to know latching relay symbol,
Its a box with shaded triangle in
lower right hand corner.
RPM = 60 ∙ ƒ ÷ P÷2 = Know the formula for RPM
Step 1. 60 x Frequency (Hz.) =
Step 2. Poles ÷ 2 = 435 Pg. 5
Take answer 1 and ÷ by answer 2 =
,If you are referring to a megohm Know what a Megger is and what it does
meter, it is a test of the insulation
properties of such things as electric 636 Pg. 13
wiring, motor windings and high
power antenna mounts.
We use a "megger" or "meg out"
electrical wiring and equipment to
see if it is shorted to ground or the
frame in any way.
The megger uses much higher
voltages to check resistance than a
normal Volt-ohm meter.
Minimum resistance is 1 Meg Ohm
(1) A parallel connection. (2) A Shunt Overloads
resistive element placed across the
terminals of an armature to bypass a 425 All Pages
portion of the current. (3) A flexible
electrical conductor designed to
conduct current around the
mechanical joint between two
conductors. (4) The resistive element
(Usually of very low resistance) used
in parallel with a DC ammeter
movement to bypass a calibrated
portion of the total circuit current.
Bad Ground You are using a Temp Run Box and you get
shocked! Why!
520 Pg. 4
, The bridle hitch can consist of Bridal Hitch
two,three, or four single hitches (fig.
3-22), used together to form a bridle 128 Pg 17
hitch for hoisting an object
A sling with two legs used to lift a
1,000 pound object will have 500
pounds of the load on each leg
when the sling angle is 90 degrees.
The load stress on each leg
increases as the angle decreases;
and if the sling angle was 30 degrees
lifting the same 1,000 pound object,
the load will be 1,000 pounds on
each leg. Try to keep all sling angles
greater than 45 degrees; sling angles
approaching 30 degrees are
considered extremely hazardous and
must be avoided at all cost.
Scaffolding should be tied to the Scaffolding, You have 32' of rise, you are using 3x5
structure using scaffolding. Where will the tie off points be ?
#9 wire or tie-in devices. The first
vertical tie 140 PG. 287-288
should be at the maximum height of
4 times the
narrowest base dimension. Additional
ties are not
to exceed 26' vertically. Maximum
horizontal
distance between ties is not to
exceed 30'.
Counterweights (Typically) are hung How much should Counterweight way?
to counter balance the weight of the
car PLUS 40% of Capacity Load. 240 Pg. 14
