ELEVATOR MECHANIC STUDY 278
EXAM WITH 100% CORRECT ANSWERS
{ GRADED A+}
Its a box with shaded triangle in lower right hand corner. - ✔✔Which
relay do you need to Order
710 Pg, 7
RPM = 60 ∙ ƒ ÷ P÷2 =
Step 1. 60 x Frequency (Hz.) =
Step 2. Poles ÷ 2 =
Take answer 1 and ÷ by answer 2 = - ✔✔Know the formula for RPM
,435 Pg. 5
If you are referring to a megohm meter, it is a test of the insulation
properties of such things as electric 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 - ✔✔Know what a Megger is and
what it does
,636 Pg. 13
(1) A parallel connection. (2) A resistive element placed across the
terminals of an armature to bypass a 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. - ✔✔Shunt Overloads
425 All Pages
Bad Ground - ✔✔You are using a Temp Run Box and you get shocked!
Why!
520 Pg. 4
The bridle hitch can consist of two,three, or four single hitches (fig. 3-
22), used together to form a bridle 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. - ✔✔Bridal Hitch
128 Pg 17
Scaffolding should be tied to the structure using
#9 wire or tie-in devices. The first vertical tie
should be at the maximum height of 4 times the
narrowest base dimension. Additional ties are not
to exceed 26' vertically. Maximum horizontal
EXAM WITH 100% CORRECT ANSWERS
{ GRADED A+}
Its a box with shaded triangle in lower right hand corner. - ✔✔Which
relay do you need to Order
710 Pg, 7
RPM = 60 ∙ ƒ ÷ P÷2 =
Step 1. 60 x Frequency (Hz.) =
Step 2. Poles ÷ 2 =
Take answer 1 and ÷ by answer 2 = - ✔✔Know the formula for RPM
,435 Pg. 5
If you are referring to a megohm meter, it is a test of the insulation
properties of such things as electric 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 - ✔✔Know what a Megger is and
what it does
,636 Pg. 13
(1) A parallel connection. (2) A resistive element placed across the
terminals of an armature to bypass a 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. - ✔✔Shunt Overloads
425 All Pages
Bad Ground - ✔✔You are using a Temp Run Box and you get shocked!
Why!
520 Pg. 4
The bridle hitch can consist of two,three, or four single hitches (fig. 3-
22), used together to form a bridle 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. - ✔✔Bridal Hitch
128 Pg 17
Scaffolding should be tied to the structure using
#9 wire or tie-in devices. The first vertical tie
should be at the maximum height of 4 times the
narrowest base dimension. Additional ties are not
to exceed 26' vertically. Maximum horizontal
