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ELEVATOR MECHANIC EXAM QUESTIONS WITH
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"The correct lube must be used on chains. - CORRECT ANSWER The freight door motor is
spinning but the door wont move, Why? 535 Pg. 9" "When the Generator and Hoist motor armature are connected in parallel they form a closed loop.In this configuration car speed is controlled by controlling the amount of current passing thru the generator shunt field. To achieve nearly constant speed under changing loads , The Ward Leonard System of automatic armature voltage control has been in use for 1/2 century. This system also regenerates power back thru the generator to the AC mains, and an energy cost
is realized. - CORRECT ANSWER Ward Leonard System
425 Pg 7,17"
"Extension tubes and ties - CORRECT ANSWER Rack and Pinion Hoist (Outside Hoist)
Contractor wants to move the hoist, what do you need? 850 pg 11,12"
"Incorrect column line or incorrect benchmark - CORRECT ANSWER Escalator is 10 inches
too low, what was wrong? 825 Pg 12" "Mark along the top portion of incline and bottom. (Not on curved section)Measure in between. Measure Down! Advance the escalator till the bottom line is at the top and place new line at bottom using first measurement. Continue to do this till you reach first measurement. Add all together.
Note: Last measurement will be shorter than the rest. - CORRECT ANSWER How do you
measure an Escalator Hand Rail 835 Pg 14 (Figure 14)" "Moving walkway Max angle is 12°
Escalator Max angle is 30° - CORRECT ANSWER What is Maximum Incline of Moving
Walkway? (Example)
The moving walkway is at 10° in the field, how much more of an angle could it be at? 830 Pg 6"
"Run High Speed - CORRECT ANSWER Ward Leonard System (See unit 425 Pg 18 Figure 17)
Question : If all three contacts close what will happen? 425 Pg 18 Figure 17" "Rotary (Auger Drill) It is generally used on dirt, clay, quicksand and other soft soils Rotary (Core Drill) is generally used on hard compacted soil such as clay, shale or slate and on some gravel and rocks. NOTE: For rocky conditions we use (Percussion Drilling) A more efficient way is with : For hard rock we use (Percussion Rotary) Drilling. This method uses a special bit called a Button Bit which has water and compressed air
coming out of bit. - CORRECT ANSWER What kind of drill method do we use in soft soil?
805 Pg 5,6,7" "A perfect Encoder Wave Form will have a square wave. A Sawtooth Wave Form is produced when
the rise and fall of the Encoder has a fault, - CORRECT ANSWER Encoder Waveform
Question : You get a Sawtooth reading on oscilloscope out of encoder. Is it good? 350 Pg 16,17 630 Pg 18,19" "Raise Boom / Arm out straight to side with thumb pointed up. Lower Boom / Arm out straight to side with thumb pointed down. Extend Boom / Thumbs pointed out Retract Boom / Thumbs pointed in Hoist up / Forefinger up rotating clockwise
230 Pg 17" "15% 575Fpm 15% is the minimum tripping speed for safties 90 % for electronic trip device 15 x 500 ÷ 100 = 75
75 + 500 = 575 - CORRECT ANSWER You are testing an elevator with a rated car speed of 500
fpm. At what minimum speed should the car safeties set."
"Falls - CORRECT ANSWER One of the many hazards in the elevator industry is one of the
most obvious dangers you could face in construction and modernization, Which of the following is that one? 105 Pg 2" "4" inches 100 or less 1½ 101 to 150 2½
151 to 200 4 - CORRECT ANSWER A team is installing a 200Fpm. car with spring buffers.
What is the minimum stroke? 215 Pg 4 Figure 5"
"Ring Test - CORRECT ANSWER You are about to replace the abrasive wheel on your grinder.
What is the test that should be performed prior to using. 130 Pg 20"
"3 Months - CORRECT ANSWER How often are extension cords checked for continuity?
129 Pg 20" "7' 3" ½ DBG is 6'6" 15 Lbs rail is 3½ inches deep x 2 = 7" ¼ of shims x 2 = ½ of shim combined
6' 6" + 7 = 7' 3" plus the ½ of shim and = 7' 3" ½ - CORRECT ANSWER The DBG is 6' 6" using a
15 Lb. rail and 1/4 of shims. What is the distance between the angle brackets on the buffer support channel? 220 Pg 1 Figure 3, 215 Pg 5" "One who is capable of identifying existing and predictable hazards and who has authorization to
take prompt, corrective measurements - CORRECT ANSWER The scaffold built in your
hoistway must be inspected by a competent person. How does OSHA define a competent person? 125 Pg 17"
"Tighten or inspect the pin - CORRECT ANSWER When using a clevis with a screw type pin,
what must you do before each lift? 210 Pg 9" "Counterweights typically are hung to counter balance the weight of the car plus 40% of capicity load. 3500 (Capacity) x 40 ÷ 100 = 1400 Lbs
1400 (40 % of capcity) + 7000 (Car Weight) = 8400Lbs. - CORRECT ANSWER A mechanic has
a car that weighs 7000 Lbs. with a capacity load of 3500 Lbs. The counter weight balance is 40%, What does the counterweight weigh? 204 Pg 14" " Rails are 16 feet standard length Hydros only have car rails , so a SET of rails
48 ÷ 16 = 3 and we need a SET so x 2 = 6 - CORRECT ANSWER Your installing an simplex
Hydro Elevator with a total rise of 48'. How many rails will you need if you stack them staggered?" "ASME Rule 207.8 requires that an elevator shall be able to lower , stop and HOLD 125% of rated load safely. 3000 Lbs. x 125% ÷ 100 = 3750
3750 Lbs. which is 125% - CORRECT ANSWER You are installing an elevator with a capacity
load of 3000 Lbs.How much of a load should the brake stop and hold if properly adjusted?
"Set the function to V~~ , Put the red lead to V Ω Port and the black lead to the COM Port -
CORRECT ANSWER Which of the following actions should be taken to measure AC voltage
with a digital multi-meter? 405 Pg 4" "Saturated When a given piece of material contains all the lines of force it can hold, it is said to be saturated.Once saturation occurs in a piece of magnetic material, an increase in current flow will
not increase its magnetic streangth - CORRECT ANSWER It is sometimes necessary to
increase the output of a DC Generator to over-speed an elevator as part of the safety test. If the maximum output is reached where the speed can not be increased further, the generator fields are said to be what? 415 Pg 6" "Hydraulic Valve Solenoid An electromechanical device operated by a coil and having an iron or steel plunger as an
armature - CORRECT ANSWER What item in a Hydro Elevator uses electrical power utilizing
the principal of electromagnetism. 815 Pg 26"
" - CORRECT ANSWER In a series parallel circuit How is resistance totaled?"
"Continued contact between brushes and commutator - CORRECT ANSWER Which of the
following maintenance procedures addresses the issue of proper DC Generator commutation? 430 Pg 6'7"
"1.33 Hz. - CORRECT ANSWER A newly modernized car has a noticeable vibration, The
application engineer has asked you to determine the frequency (HZ) of your 24" drive sheave. (Roped 1:1 with a contract speed of 500 Fpm.) What is the frequency?" "A Isolation Transformer Isolation transformers are used to minimize electrical noise from being reflected back onto
supply lines. - CORRECT ANSWER Your customer is complaining that your older SCR Drive
powered elevator is causing noise in the building power lines. What do you need. 410 Pg 11"
"Ohm Law E= I∙R I x R = 20
20 Volt - CORRECT ANSWER In a series circuit with a 10K resistor and a 2mA current flow ,
what is the applied Voltage?" "The Black lead is plugged into COMMON The Red Lead is plugged into vΩ Set the Switch to Ω Power removed from the circuit. At least one lead disconnected from load being measured. The Ohmmeter is connected in Parallel across the load. With a digital meter just set and measure. With a Analog meter you have to zero out the meter by
touching leads together. - CORRECT ANSWER How would you connect on Ohmmeter to
check load resistance? 335 Pg 12" "Power Law P = V∙ I
500 ÷ 2 = 250 Volts - CORRECT ANSWER What is the Maximum voltage drop that can occur
across a 500 Watt resistor carrying 2 Amps of current?"
"Generator - CORRECT ANSWER Exciter voltage comes from what source?
425 Pg 2" "10 % is desired of each set of wires 15 x 10 ÷ 100 = 1.5 or 2 27 x 10 ÷ 100 = 2.7 or 3 57 x 10 ÷ 100 = 5.7 or 6
Answer: 2 #14, 3 #16, 6 #18 - CORRECT ANSWER When pulling Hoistway wiring a 10% spare
is desirable. If the wiring required (15 - #14 Awg) (27 - #16 Awg) (57 - #18Awg) What is the best selection of wires? 515 Pg 26"
350 Pg 5"
"Car Door - CORRECT ANSWER A customer informs you that his elevator has a door
mechanical problem at all landings. Where would you look first for the first probable solution? 525"
"Adjust the door track chains - CORRECT ANSWER The freight elevator doors are binding
because they are hanging slightly out of square. What adjustments can you make to correct the problem? 535 Pg 39"
"Use a Plumb Line, Snap a Line or measure off the Rail - CORRECT ANSWER Your about to
install duct in the hoistway. What method will give you straightest line? 510 Pg 8"
"Closest to the rail - CORRECT ANSWER Your Installing multiple travelers on a high rise car
installation. Where should the #1 travelling cable be located? 515 Pg 8"
"36 Inches - CORRECT ANSWER Two controllers in a small motor room face each other with
the voltages of 500Volts. What is the minimum clearance? 235 Pg 9"
"4' ft. - CORRECT ANSWER When installing travelling cables what is the minimum length of
vertical suspension at both ends before the loop forms? 515 Pg 9"
"Change the Phase Sequencing - CORRECT ANSWER You attempt to adjust a new variable
voltage, variable frequency door operator, but it operates in the wrong direction, What corrective actions must you take? 530 Pg 21"
"The Gate Switch is activated by the drive door and the relating device has failed - CORRECT
ANSWER You receive a call that an elevator with center opening doors is running with one door
partially open, How can this happen? 530 Pg 29 (Last Paragraph)"
"Car Sling to Platform - CORRECT ANSWER In order to properly bond an isolation platform
Where would you connect the bonding straps. 515 Pg 31"
"Column Line - CORRECT ANSWER As a mechanic, you are sent to install an escalator.
What point of reference would you use to square the unit? 825 Pg 5"
"To provide the passenger a visual indication of the entering and exciting - CORRECT
ANSWER Escalator step demarcation lights are required by code for what reason?
825 Pg44" "Direct Current motors If shunt field voltage is increased , the motor speed will be reduced and torque increased If shunt voltage decreased the reverse is true Increasing the armature voltage of the door motor increases speed Answer:
Vary Armature Voltage - CORRECT ANSWER While adjusting a passenger elevator door
operator equipped with a permanent magnet DC motor, Which operation would you perform to achieve control of the motor? 530 Pg 16" "Skirt board switches are required at both upper and lower ends of escalator. Gap of no more than 3/16ths or (4.8mm) Answer:
3/16" of an inch - CORRECT ANSWER What does the AMSE Code specify regarding the
clearance between the skirt panel and the side of the step tread? 825 Pg63"
"Inputs output A B C D 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 0 1 1 0 0 1 1 1 1 According to our truth table we should have a 1, so the gate is malfunctioning!
Answer: The And gate has failed - CORRECT ANSWER While troubleshooting a 3 Input And
Gate circuit, you see that all 3 inputs are High 1, yet the output of the And Gate is Low 0, Whats the problem? 645 Pg 6"
"Leave the machine room - CORRECT ANSWER When answering a call, you walk into a
machine room and find 2 inches of water on the floor. What do you do? 115"
"Compare the blown fuse to the fuse rating in the straight line wiring diagram - CORRECT
ANSWER While responding to a trouble call on an elevator door, you find a fuse blown in the DC
circuit feeding the door motor. When picking a replacement fuse what should you do? 530 Pg 37"
"Check the fuse feeding AC to the rectifier - CORRECT ANSWER A DC door motor supplied
from a three phase rectifier runs slow. The DC voltage (Normally 320 Volts) is 220 Volts. What should you do? 530 Pg 16"
"The primary safety circuit - CORRECT ANSWER Your arriving at a building to perform
routine maintenance, you find a traction elevator in the overhead. In order to move the car out of the overhead, you need to jump which of these circuits? 720 Pg 28"
"Strain supports are required in the vertical raceway every 100 Feet
Begin fastening the strain devices at the LOWEST one and work upward to adjust tension. -
CORRECT ANSWER You just pulled multi-cords down the hoist way of a high rise installation
How should you provide strain relief for the multi cords? 510 Pg 36,37"
"1/4" inch - CORRECT ANSWER You are installing horizontal sliding doors with guides in
each door panel. How much should the guide engage the sill groove? 525 Pg 23"
"Verify the notch on the dip chip matches the notch on the board. - CORRECT ANSWER You
supervisor tells you to change the software on a hydro elevator microprocessor board. The software is in a 24 pin DIP package.To properly orient the new chip on the processor board, what must you do. 645 Pg 11"
"Change the frequency HZ - CORRECT ANSWER You need to speed up a AC motor that has a
fixed number of poles. Using the formula PRM = 60 ∙ ƒ ÷ by p/2"
"Welded Cover - CORRECT ANSWER You have finished digging a Hydro Hole. The jack is not
on site. Before you leave you must cover the hydro hole with what. 805 Pg 10" "On a calculator 10000 x 5 ÷ 100 = 500
10000 + 500 = 10500 - CORRECT ANSWER the Counterweight and the frame that weighs
10000 Lbs. needs to be increased by 5%, What would the new counterweight and frame weigh?" "You can ONLY place an Ammeter in Series with a circuit where you could safely place a piece of
wire. - CORRECT ANSWER Where do you connect a Ammeter to read total circuit current?
405 Pg 9"
"Detects imbalance in the current between hot and neutral - CORRECT ANSWER What is the
purpose of the GFCI? 129 Pg 12"
"Negative and Positive - CORRECT ANSWER What are two types of respirator fit checks?
127 Pg 19"
"30° and smaller. It is recommended to use 45° or greater. - CORRECT ANSWER Which sling
angles are dangerouse 128 Pg 18"
"4 Times - CORRECT ANSWER OSHA requires that most scaffold be designed to support
How many times there maximum intended load? 137 Pg 18"
"The product is a severe fire hazard - CORRECT ANSWER A "4" in the red square of the NFPA
label means? 136 Pg 19"
"Is Not reactive - CORRECT ANSWER A "0" in the yellow square of the NFPA label means?
136 pg 19"
"Electrical equipment including motors and switches - CORRECT ANSWER A class C fire
extinguisher can put out what type of fires? 136 Pg 22"
"Fuel, Oxygen, Heat - CORRECT ANSWER A fire needs thee elements to burn
What are they? 136 Pg 4"
"Temperature - CORRECT ANSWER Flash Point is a?
136 Pg 9"
"Pull the Main Line Switch - CORRECT ANSWER What must be done before checking drive
belts on a hydro? 820 Pg 1"
"Anchorage, Lanyard, Body Harness - CORRECT ANSWER The three major components of a
personal fall arrest system are? 110 Pg 6"
"Respirators - CORRECT ANSWER Which piece of PPE requires prior authorization and
training before you are permitted to use it? 127 Pg 14"
"BEFORE EACH USE - CORRECT ANSWER Your PFAS must be inspected for damage how
often. 131 Pg 19"
"5000 Lbs. per worker attached - CORRECT ANSWER An anchorage for workers PFAS
(Personal Fall Arresting System) must be independent of any anchorage used to support or suspend platforms and must be capable of supporting 131 Pg 20"
"10' Ft. - CORRECT ANSWER OSHA requires that workers have fall protection when working
on scaffolding how many feet above the ground? 137"
"Concrete Dust - CORRECT ANSWER Which of the following air contaminants can easily be
filtered by most respirator? 127 Pg 13,14"
"A Lanyard must be hooked above the shoulders - CORRECT ANSWER When working in a
hoistway, which of the following statement is correct?
Step 1. 60 x Frequency (Hz.) = Step 2. Poles ÷ 2 =
Take answer 1 and ÷ by answer 2 = - CORRECT ANSWER 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 - CORRECT ANSWER 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. - CORRECT ANSWER Shunt Overloads
425 All Pages"
"Bad Ground - CORRECT ANSWER 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, 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. - CORRECT
ANSWER 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
distance between ties is not to exceed 30'. - CORRECT ANSWER Scaffolding, You have 32' of
rise, you are using 3x5 scaffolding. Where will the tie off points be? 140 PG. 287-288" "Counterweights (Typically) are hung to counter balance the weight of the car PLUS 40% of
Capacity Load. - CORRECT ANSWER How much should Counterweight way?
240 Pg. 14" "Note: 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. On a calculator Multiply the percent 10 by the number you have and ÷ by 100
10 X 52 ÷ 100 = 5.2 - CORRECT ANSWER Pulling Spare Wires (Example) 10% of 52 Wires
515 Pg.26" "Lula: Limited use/Limited Access (Example Wheelchair Lifts) Max Rise 25' Max Speed 30 Ft/Min Max Capacity 1400 Lbs. Max Platform Area 18 Sq/Ft. Residential Elevator: Max Rise 50 ' Max Speed 40 Ft/min Max Capacity 940 Lbs. Max Platform Area 19 Sq/Ft 840 Pg 2 Dumbwaiters: Platform limited to 9 Sq/Ft Inside height is limited to no more than 4 Feet Capacity is limited to 500Lbs
No Riders - CORRECT ANSWER Read Lula and Dumb waiters
545 Pg 1"
