Elevator Mechanic Exam Review
1 gallon equals how many cubic ft? - ANS-.134 cubic ft
2 controllers in a small gadget room face every different, what is the minimum clearance
between them? - ANS-36 inches
2nd ground PI lighting fixtures then speedy shuts off, why? - ANS-X1 4-6
7-foot platform with internal cab clearance of 6'eight", what is the thickness of the cab
partitions? - ANS-2-inch-thick walls
A 300ohm resistor burns out, but you do not have another one. How can you are making
one? - ANS-2 600ohm resistors in parallel is 300ohms. Resistance is half of of highest
resistor in parallel circuit.
3 225ohm resistors in parallel is 75ohms.
A 480vac stepdown 240vac transformer is attached to a 3 phase rectifier, what's the output
voltage? - ANS-320vac
three segment full wave = 1.33x output voltage
A 75ohm resistor has blown, no alternative, how do you restore it? - ANS-3-225ohm
resistors in parallel.
3-25ohm resistors in series
A vehicle is loaded with a hundred twenty five% and sinks, why? - ANS-Slipping thru the
break
A car touring inside the hoistway continually stops on the same spot and blows a fuse. What
reasons this? - ANS-Traveling cable has a cut/uncovered twine or a short
A car weighs 2500lbs with a ability of 2500lbs, the CWT is weighted at 40%, how tons is the
motor lifting while the automobile is absolutely loaded? - ANS-2500(car) + 1000(40%) 3500.
5000-3500=1500lbs lifted by using the gadget
A contractor desires to raise the automobile pace from 100fpm to 125fpm, it presently has a
12" sheave. What sheave is required? - ANS-Diam=12" 12/four=3" 25fpm=3" 100fpm +
25fpm= 12"+3"= 15" sheave
A customer does no longer want an escape hatch on a residential elevator, beneath what
condition is that this criminal? - ANS-Manual operation must be furnished
A CWT body weighs 10,000lbs and needs to be elevated by way of five%. What is the brand
new weight of the body? - ANS-10,500lbs
10,000 x 5 / one hundred= 500lbs +10,000 = 10,500lbs
,A DC door motor supplied from a 3 segment rectifier runs sluggish. The DC voltage is
generally 320 is 220. What must you do? - ANS-Check the fuse feeding the AC rectifier
A dumbwaiter is 9sqft in region, 4ft excessive, and capacity is 13.9lb/ft3. What is total
capability? - ANS-nine x four x 13.9= 500lbs Max ability
A force of 5,000lbs is carried out to a plunger with an area of 25sqin. What is device strain? -
ANS-200psi
500/25 PRESSURE=FORCE/AREA AREA=FORCE/PRESSURE
A hydro runs up and not using a load, but will now not run with a complete load. What is the
issue? - ANS-The remedy valve is set too low
A motor wishes a sleeve bearing changed, what sort of bearing do you want? - ANS-Friction
bearing AKA Sleeve bearing.
Anti-Friction Bearing AKA Ball bearing
A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot study voltage or
resistance. What ought to you do? - ANS-Replace it with a larger MOV
A transferring walk has a bent of 10degrees, what's the highest attitude it is able to be? -
ANS-12degrees escalator 31degrees
A vertical platform elevate has a clearance of 1 inch. How a great deal will it need to
circulate to satisfy code? - ANS-Move in ¼ inch. Code is ¾ inch
After receiving an inspection document, one violation is door remaining force. After checking
you examine 50lb of door pressure, is that this code? How do you are making it code
compliant? - ANS-Not code. Code is 30lb or less. To restore it you want to modify the
torque/velocity of door operator
Amplifiers: - ANS-Inverting: Op amp(input) furnished to. NEGATIVE Non inverting: Input.
POSITIVE
As a mechanic you are despatched to install an escalator, what factor of reference would
you operate to rectangular the unit? - ANS-Column LINE
At what distance from closed does the gate transfer function? - ANS-2 inches
At what pace need to the Gov. Transfer touch be set to open? - ANS-Electrical 90% of
Tripping velocity for 150fpm-500fpm. 95% for +500fpm
Before you may move a piston on a hydro, what precautions must be taken? - ANS-Check
the piston for debris and tightness of the head, make sure pit is apparent
Car doors are dragging inside the sill, how excessive must the auto doors be above the sill?
- ANS-¼ inch
, Car is jogging commonly, however the Fire Service buzzer will no longer shut off, Why? -
ANS-EHP 3-2 shorted
Car weighs 7,000lbs with a potential of three,500lbs. What does the CWT weigh? -
ANS-8,400lbs
3500 x forty / 100=1,400lbs
7,000 + 1,400 = eight,four hundred
Car will no longer travel to 2 with out a three call, and could not pass down to a few with out
a 2 name? - ANS-2F1 4-6
Car with selective collective system is transferring to the lobby to take a call, an up name is
put in at the 2nd ground, what takes place? - ANS-The name is bypassed till the auto is
visiting up
Customer complains that elevator is having door trouble at each floor. Where do you start
hassle shooting? - ANS-The vehicle doors
Customer is complaining that an older SCR power powered elevator, is causing noise within
the building strength strains. What can help reduce the noise? - ANS-Isolation Transformer:
Used to reduce electric noise from being contemplated again to deliver traces
During construction the Omega CWT rails were damaged, what occurred? - ANS-The
Omegas have been over tightened
During creation you land an escalator, but it is 10mm low, what is incorrect? - ANS-The pit is
too deep or column MARK is off
Escalator demarcation lighting fixtures are required by means of code for what cause? -
ANS-To offer passengers with a visible indication while coming into and exiting the unit.
Exciter voltage comes from what supply? - ANS-Generator
Freight doorways are binding because they're placing out of square, what adjustments can
you make? - ANS-Adjust door music chains
Generator runs at 600rpm and has four poles, what's the output frequency? - ANS-20hz
600/60=10 10x2=20 RPM 60 x frequency / pole/2
How do emergency doors swing? - ANS-Outwards
How do you connect brackets to brick? - ANS-Inserts set back a ¼ inch into the block. Code
ought to call for thru bolts
How do you cut a completed ground? - ANS-Cutting blade far from finished aspect
1 gallon equals how many cubic ft? - ANS-.134 cubic ft
2 controllers in a small gadget room face every different, what is the minimum clearance
between them? - ANS-36 inches
2nd ground PI lighting fixtures then speedy shuts off, why? - ANS-X1 4-6
7-foot platform with internal cab clearance of 6'eight", what is the thickness of the cab
partitions? - ANS-2-inch-thick walls
A 300ohm resistor burns out, but you do not have another one. How can you are making
one? - ANS-2 600ohm resistors in parallel is 300ohms. Resistance is half of of highest
resistor in parallel circuit.
3 225ohm resistors in parallel is 75ohms.
A 480vac stepdown 240vac transformer is attached to a 3 phase rectifier, what's the output
voltage? - ANS-320vac
three segment full wave = 1.33x output voltage
A 75ohm resistor has blown, no alternative, how do you restore it? - ANS-3-225ohm
resistors in parallel.
3-25ohm resistors in series
A vehicle is loaded with a hundred twenty five% and sinks, why? - ANS-Slipping thru the
break
A car touring inside the hoistway continually stops on the same spot and blows a fuse. What
reasons this? - ANS-Traveling cable has a cut/uncovered twine or a short
A car weighs 2500lbs with a ability of 2500lbs, the CWT is weighted at 40%, how tons is the
motor lifting while the automobile is absolutely loaded? - ANS-2500(car) + 1000(40%) 3500.
5000-3500=1500lbs lifted by using the gadget
A contractor desires to raise the automobile pace from 100fpm to 125fpm, it presently has a
12" sheave. What sheave is required? - ANS-Diam=12" 12/four=3" 25fpm=3" 100fpm +
25fpm= 12"+3"= 15" sheave
A customer does no longer want an escape hatch on a residential elevator, beneath what
condition is that this criminal? - ANS-Manual operation must be furnished
A CWT body weighs 10,000lbs and needs to be elevated by way of five%. What is the brand
new weight of the body? - ANS-10,500lbs
10,000 x 5 / one hundred= 500lbs +10,000 = 10,500lbs
,A DC door motor supplied from a 3 segment rectifier runs sluggish. The DC voltage is
generally 320 is 220. What must you do? - ANS-Check the fuse feeding the AC rectifier
A dumbwaiter is 9sqft in region, 4ft excessive, and capacity is 13.9lb/ft3. What is total
capability? - ANS-nine x four x 13.9= 500lbs Max ability
A force of 5,000lbs is carried out to a plunger with an area of 25sqin. What is device strain? -
ANS-200psi
500/25 PRESSURE=FORCE/AREA AREA=FORCE/PRESSURE
A hydro runs up and not using a load, but will now not run with a complete load. What is the
issue? - ANS-The remedy valve is set too low
A motor wishes a sleeve bearing changed, what sort of bearing do you want? - ANS-Friction
bearing AKA Sleeve bearing.
Anti-Friction Bearing AKA Ball bearing
A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot study voltage or
resistance. What ought to you do? - ANS-Replace it with a larger MOV
A transferring walk has a bent of 10degrees, what's the highest attitude it is able to be? -
ANS-12degrees escalator 31degrees
A vertical platform elevate has a clearance of 1 inch. How a great deal will it need to
circulate to satisfy code? - ANS-Move in ¼ inch. Code is ¾ inch
After receiving an inspection document, one violation is door remaining force. After checking
you examine 50lb of door pressure, is that this code? How do you are making it code
compliant? - ANS-Not code. Code is 30lb or less. To restore it you want to modify the
torque/velocity of door operator
Amplifiers: - ANS-Inverting: Op amp(input) furnished to. NEGATIVE Non inverting: Input.
POSITIVE
As a mechanic you are despatched to install an escalator, what factor of reference would
you operate to rectangular the unit? - ANS-Column LINE
At what distance from closed does the gate transfer function? - ANS-2 inches
At what pace need to the Gov. Transfer touch be set to open? - ANS-Electrical 90% of
Tripping velocity for 150fpm-500fpm. 95% for +500fpm
Before you may move a piston on a hydro, what precautions must be taken? - ANS-Check
the piston for debris and tightness of the head, make sure pit is apparent
Car doors are dragging inside the sill, how excessive must the auto doors be above the sill?
- ANS-¼ inch
, Car is jogging commonly, however the Fire Service buzzer will no longer shut off, Why? -
ANS-EHP 3-2 shorted
Car weighs 7,000lbs with a potential of three,500lbs. What does the CWT weigh? -
ANS-8,400lbs
3500 x forty / 100=1,400lbs
7,000 + 1,400 = eight,four hundred
Car will no longer travel to 2 with out a three call, and could not pass down to a few with out
a 2 name? - ANS-2F1 4-6
Car with selective collective system is transferring to the lobby to take a call, an up name is
put in at the 2nd ground, what takes place? - ANS-The name is bypassed till the auto is
visiting up
Customer complains that elevator is having door trouble at each floor. Where do you start
hassle shooting? - ANS-The vehicle doors
Customer is complaining that an older SCR power powered elevator, is causing noise within
the building strength strains. What can help reduce the noise? - ANS-Isolation Transformer:
Used to reduce electric noise from being contemplated again to deliver traces
During construction the Omega CWT rails were damaged, what occurred? - ANS-The
Omegas have been over tightened
During creation you land an escalator, but it is 10mm low, what is incorrect? - ANS-The pit is
too deep or column MARK is off
Escalator demarcation lighting fixtures are required by means of code for what cause? -
ANS-To offer passengers with a visible indication while coming into and exiting the unit.
Exciter voltage comes from what supply? - ANS-Generator
Freight doorways are binding because they're placing out of square, what adjustments can
you make? - ANS-Adjust door music chains
Generator runs at 600rpm and has four poles, what's the output frequency? - ANS-20hz
600/60=10 10x2=20 RPM 60 x frequency / pole/2
How do emergency doors swing? - ANS-Outwards
How do you connect brackets to brick? - ANS-Inserts set back a ¼ inch into the block. Code
ought to call for thru bolts
How do you cut a completed ground? - ANS-Cutting blade far from finished aspect
