{"id":116864,"date":"2023-08-26T10:47:35","date_gmt":"2023-08-26T10:47:35","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=116864"},"modified":"2023-08-26T10:47:37","modified_gmt":"2023-08-26T10:47:37","slug":"elevator-mechanic-bundled-exams-2022-2023-with-verified-answers","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2023\/08\/26\/elevator-mechanic-bundled-exams-2022-2023-with-verified-answers\/","title":{"rendered":"Elevator Mechanic Bundled Exams (2022\/2023) with Verified Answers"},"content":{"rendered":"\n

Elevator Mechanic Exam Review
Questions and Answers with Complete
Solutions
A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12″ sheave.
What sheave is required? \u2714\u2714Diam=12″ 12\/4=3″ 25fpm=3″ 100fpm + 25fpm= 12″+3″= 15″
sheave
A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or resistance.
What should you do? \u2714\u2714Replace it with a larger MOV
On a Ward-Leonard circuit the break is set, but the motor is trying to slip through the break.
What is the issue? \u2714\u2714Suicide Circuit
You have an old DC motor and are adding an SCR drive, what do you do to the interpoles?
\u2714\u2714Leave the interpoles alone. When adding a SCR drive to the generator, the series loop is
removed, as are the 3 resistors. Everything else remains the same
A hydro runs up with no load, but will not run with a full load. What is the issue? \u2714\u2714The relief
valve is set too low<\/p>\n\n\n\n

Runby for a 1:1 hits the CWT buffer 4″ below the top landing. CWT runby should be set at 18″.
How much should the ropes be shortened? \u2714\u271422″
You need to work on a freight door retiring cam, you LOTO the main line but there is still power
on the cam. What circuit is still hot? \u2714\u2714Door Operator Disconnect\/ Main Line Disconnect
The contractor requests that the vertical center of a Rack and Pinion hoist be moved. How do you
do this? \u2714\u2714Adjust Tie Downs and Wall Ties
Working pressure on a Hydro is 400psi. What is the maximum relief valve setting? \u2714\u2714400psi x
150%= 600psi
What must be installed on a false car before operation? \u2714\u2714Spring Loaded Safeties.
There is slight arcing between the brush and commutator. What action must be taken? \u2714\u2714None.
Heavy arcing=Light brush pressure. Heavy bush pressure=mechanical wear<\/p>\n\n\n\n

If rigging gear is roped 3:1 and a BEAM CLAMP is used to lift a 6,000lb load. What is the beam
capacity? \u2714\u271418,000lbs. Beam capacity is cut in half with use of clamp, when rigging all blocks,
rope, and clamps will be Equal to the lowest load rating
How much resistance is measured over a normally closed switch? \u2714\u27141.2ohms. should be zero,
but will never be that low
A car traveling in the hoistway always stops at the same spot and blows a fuse. What causes this?
\u2714\u2714Traveling cable has a cut\/exposed wire or a short
How is a class 1 yearly buffer test preformed? \u2714\u2714Car at bottom landing and on inspection, jump
out direction and final limits. With pit clear, run down to compress buffers, buffers should fully
extend within 90 seconds.
5yr: Full load Full speed
CWT: Full speed Empty
How many strain supports are required on a 350ft raceway? \u2714\u27144. 1 every 100ft
How is stainless steel drilled out? \u2714\u2714Slow speed and constant pressure<\/p>\n\n\n\n

What is the required amount of retainer clips for wedge shackles and what is the spacing?
\u2714\u2714Minimum 2 clips. 1st at a maximum 4x the diameter of the rope
2nd at a maximum 8x the diameter above the 1st clip
A 300ohm resistor burns out, but you don’t have another one. How can you make one? \u2714\u27142
600ohm resistors in parallel is 300ohms. Resistance is half of highest resistor in parallel circuit.
3 225ohm resistors in parallel is 75ohms.
When cutting laminated panels, which direction should the finish side face? \u2714\u2714Finish side
facing the cutting edge of the tool. Blade will burr the backside
How do you cut a finished floor? \u2714\u2714Cutting blade away from finished side
A 480vac stepdown 240vac transformer is connected to a 3 phase rectifier, what is the output
voltage? \u2714\u2714320vac
3 phase full wave = 1.33x output voltage
A car is loaded with 125% and sinks, why? \u2714\u2714Slipping through the break<\/p>\n\n\n\n

Elevator Mechanic Exam Latest 2023
Already Passed
Which relay do you need to Order
710 Pg, 7 \u2714\u2714A Latching relay: Used for call registration,direction selection or as selector relays
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.
Know the formula for RPM
435 Pg. 5 \u2714\u2714RPM = 60 \u2219 \u0192 \u00f7 P\u00f72 =
Step 1. 60 x Frequency (Hz.) =
Step 2. Poles \u00f7 2 =
Take answer 1 and \u00f7 by answer 2 =
Know what a Megger is and what it does<\/p>\n\n\n\n

636 Pg. 13 \u2714\u2714If 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
Shunt Overloads
425 All Pages \u2714\u2714(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.
You are using a Temp Run Box and you get shocked! Why!<\/p>\n\n\n\n

520 Pg. 4 \u2714\u2714Bad Ground
Bridal Hitch
128 Pg 17 \u2714\u2714The 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.
Scaffolding, You have 32′ of rise, you are using 3×5 scaffolding. Where will the tie off points be
?
140 PG. 287-288 \u2714\u2714Scaffolding should be tied to the structure using<\/p>\n\n\n\n

9 wire or tie-in devices. The first vertical tie<\/h1>\n\n\n\n

should be at the maximum height of 4 times the<\/p>\n\n\n\n

narrowest base dimension. Additional ties are not
to exceed 26′ vertically. Maximum horizontal
distance between ties is not to exceed 30′.
How much should Counterweight way?
240 Pg. 14 \u2714\u2714Counterweights (Typically) are hung to counter balance the weight of the car
PLUS 40% of Capacity Load.
Pulling Spare Wires (Example) 10% of 52 Wires
515 Pg.26 \u2714\u2714Note: We do not use wire smaller than #20 in travelling cables and #24 outside
travelers.
Largest wires are feeders to Hoist \/Pump motor
We always have 10 % spares
10% of 52 = 5.2
On a calculator Multiply the percent 10 by the number you have and \u00f7 by 100
10 X 52 \u00f7 100 = 5.2<\/p>\n\n\n\n

Mechanics Exam Questions and
Answers 100% Pass
** An MOV burns out, you replace it but cannot read voltage or resistance. What should you do?
\u2714\u2714Replace it with a larger one (630)<\/p>\n\n\n\n