Elevator Mechanic Exam Review Elevator Mechanic
Study Questions with COMPLETE SOLUTIONS
(LATEST)
If rigging gear is roped 3:1 and a BEAM CLAMP is used to lift a 6,000lb load.
What is the beam capacity? - CORRECT ANSWER 18,000lbs. 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
What are the consequences of misaligned joints on a Rack and Pinion? -
CORRECT ANSWER Broken Gear teeth. CWT derailment. Excessive wear/ crease
the surface of the tube
There is a noise coming from a freight door. The sheave is moving, but the chain
is not. What is the problem? - CORRECT ANSWER Oil on the drive chain
What is the effect when you change a sling angle from 60 degrees to 30
degrees? - CORRECT ANSWER More tension, less capacity. Any angle 30 or less
is dangerous
Generator runs at 600rpm and has 4 poles, what is the output frequency? -
CORRECT ANSWER 20hz
600/60=10 10x2=20 RPM 60 x frequency / pole/2
,How many wires are needed for the following circuit? Exclude spares. BCE---
SPI/BCD---SP2/BCD---SP4/BCD---UR1/BCE---UR2/BCE---DR1/CRE--- DR2/GRD -
CORRECT ANSWER 11 wires. You do not need the duplicates
How must a 9 lead 480/240 motor be wired for High Voltage? - CORRECT
ANSWER L1(1) L2(2) L3(3) Low Voltage L1(1-7) L2(2- 8) L3(3-9) 7-4 8-6 9-5 4 5 6 +
120v______0-------0_______R2________A_________R1_______GRD
There is voltage at the switch, but none at A, what is wrong? - CORRECT
ANSWER Open at R2 or R1
The close door limit switch is not working, you have power at points 35-8, no
voltage at 1-S2 why? - CORRECT ANSWER Door limit switch malfunction
The step level switch on an escalator has been tripped, where do you check? -
CORRECT ANSWER Upper and Lower Truss assemblies, trips if step sags more
than 1/8th inch
A motor needs a sleeve bearing replaced, what type of bearing do you need? -
CORRECT ANSWER Friction bearing AKA Sleeve bearing.
Anti-Friction Bearing AKA Ball bearing
What type of safeties are required on a 300fpm car? - CORRECT ANSWER Type
B wedge clamp
What stopping devices are required on vertical platforms? - CORRECT ANSWER
2 pan switches. 15lbs max pressure
,What are the most common features of Load Weigh? - CORRECT ANSWER
Control generator field and Inside express operation
At what distance from closed does the gate switch operate? - CORRECT ANSWER
2 inches
If the DC output of a 3 phase rectifier is lower than specified, what is the
problem? - CORRECT ANSWER AC fuse is blown.
1 input phase is missing
What is the overlap minimum on 2 & 3 speed doors? - CORRECT ANSWER
Horizontal ½ inch Vertical 1 inch
What are minimum and maximum clearance between sill and car doors? -
CORRECT ANSWER ¼ inch Minimum 3/8-inch Maximum
What is maximum leading edges for center opening doors? - CORRECT ANSWER
½ inch
What is minimum sill to gib engagement? - CORRECT ANSWER ¼ inch
What is minimum and maximum sill to sill gap? - CORRECT ANSWER ½ inch to
1 ½ inch
1 gallon equals how many cubic feet? - CORRECT ANSWER .134 cubic feet
, How many gallons are needed to run a 6" plunger 30'? - CORRECT ANSWER 30'
to inch= 360" 3x3x3.14=28.26 28.26x360=10,173.6/231=44.04 gallons 4" 25':
25x12=300 2x2x3.14=12.56x300=3768/231=16.3 gallons
A force of 5,000lbs is applied to a plunger with an area of 25sqin. What is system
pressure? - CORRECT ANSWER 200psi
500/25 PRESSURE=FORCE/AREA AREA=FORCE/PRESSURE
What is the definition of working pressure? - CORRECT ANSWER Fully loaded
to capacity, Full speed running up
On a geared machine the worm and worm gear are made out of what materials?
- CORRECT ANSWER Steel and Bronze
What is the purpose of a gear reduction unit on a geared machine? - CORRECT
ANSWER Increased lifting capacity
What holds a stopped Hydraulic elevator? - CORRECT ANSWER Check valve
What must be done if you get on top of a dumbwaiter? - CORRECT ANSWER
Never fully get on top. Work only partially on with the mainline disconnect off
How do you measure an escalator hand rail? - CORRECT ANSWER Mark the top
and bottom of the inclination, measure in between and move the car until the
bottom mark is at the top, measure again and continue doing this until you see
your 1st mark. The last measurement will be shorter. Add all the measurements
together to get your length.
Study Questions with COMPLETE SOLUTIONS
(LATEST)
If rigging gear is roped 3:1 and a BEAM CLAMP is used to lift a 6,000lb load.
What is the beam capacity? - CORRECT ANSWER 18,000lbs. 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
What are the consequences of misaligned joints on a Rack and Pinion? -
CORRECT ANSWER Broken Gear teeth. CWT derailment. Excessive wear/ crease
the surface of the tube
There is a noise coming from a freight door. The sheave is moving, but the chain
is not. What is the problem? - CORRECT ANSWER Oil on the drive chain
What is the effect when you change a sling angle from 60 degrees to 30
degrees? - CORRECT ANSWER More tension, less capacity. Any angle 30 or less
is dangerous
Generator runs at 600rpm and has 4 poles, what is the output frequency? -
CORRECT ANSWER 20hz
600/60=10 10x2=20 RPM 60 x frequency / pole/2
,How many wires are needed for the following circuit? Exclude spares. BCE---
SPI/BCD---SP2/BCD---SP4/BCD---UR1/BCE---UR2/BCE---DR1/CRE--- DR2/GRD -
CORRECT ANSWER 11 wires. You do not need the duplicates
How must a 9 lead 480/240 motor be wired for High Voltage? - CORRECT
ANSWER L1(1) L2(2) L3(3) Low Voltage L1(1-7) L2(2- 8) L3(3-9) 7-4 8-6 9-5 4 5 6 +
120v______0-------0_______R2________A_________R1_______GRD
There is voltage at the switch, but none at A, what is wrong? - CORRECT
ANSWER Open at R2 or R1
The close door limit switch is not working, you have power at points 35-8, no
voltage at 1-S2 why? - CORRECT ANSWER Door limit switch malfunction
The step level switch on an escalator has been tripped, where do you check? -
CORRECT ANSWER Upper and Lower Truss assemblies, trips if step sags more
than 1/8th inch
A motor needs a sleeve bearing replaced, what type of bearing do you need? -
CORRECT ANSWER Friction bearing AKA Sleeve bearing.
Anti-Friction Bearing AKA Ball bearing
What type of safeties are required on a 300fpm car? - CORRECT ANSWER Type
B wedge clamp
What stopping devices are required on vertical platforms? - CORRECT ANSWER
2 pan switches. 15lbs max pressure
,What are the most common features of Load Weigh? - CORRECT ANSWER
Control generator field and Inside express operation
At what distance from closed does the gate switch operate? - CORRECT ANSWER
2 inches
If the DC output of a 3 phase rectifier is lower than specified, what is the
problem? - CORRECT ANSWER AC fuse is blown.
1 input phase is missing
What is the overlap minimum on 2 & 3 speed doors? - CORRECT ANSWER
Horizontal ½ inch Vertical 1 inch
What are minimum and maximum clearance between sill and car doors? -
CORRECT ANSWER ¼ inch Minimum 3/8-inch Maximum
What is maximum leading edges for center opening doors? - CORRECT ANSWER
½ inch
What is minimum sill to gib engagement? - CORRECT ANSWER ¼ inch
What is minimum and maximum sill to sill gap? - CORRECT ANSWER ½ inch to
1 ½ inch
1 gallon equals how many cubic feet? - CORRECT ANSWER .134 cubic feet
, How many gallons are needed to run a 6" plunger 30'? - CORRECT ANSWER 30'
to inch= 360" 3x3x3.14=28.26 28.26x360=10,173.6/231=44.04 gallons 4" 25':
25x12=300 2x2x3.14=12.56x300=3768/231=16.3 gallons
A force of 5,000lbs is applied to a plunger with an area of 25sqin. What is system
pressure? - CORRECT ANSWER 200psi
500/25 PRESSURE=FORCE/AREA AREA=FORCE/PRESSURE
What is the definition of working pressure? - CORRECT ANSWER Fully loaded
to capacity, Full speed running up
On a geared machine the worm and worm gear are made out of what materials?
- CORRECT ANSWER Steel and Bronze
What is the purpose of a gear reduction unit on a geared machine? - CORRECT
ANSWER Increased lifting capacity
What holds a stopped Hydraulic elevator? - CORRECT ANSWER Check valve
What must be done if you get on top of a dumbwaiter? - CORRECT ANSWER
Never fully get on top. Work only partially on with the mainline disconnect off
How do you measure an escalator hand rail? - CORRECT ANSWER Mark the top
and bottom of the inclination, measure in between and move the car until the
bottom mark is at the top, measure again and continue doing this until you see
your 1st mark. The last measurement will be shorter. Add all the measurements
together to get your length.
