Mechanic – Exam Study Guide with Key Concepts and
Practice Questions
E=__ - correct answer ✔✔ IR
P=__ - correct answer ✔✔ IE
Pie r^2 = - correct answer ✔✔ Area of a circle
231 in^3 /____ - correct answer ✔✔ gal.
25.4mm/__ - correct answer ✔✔ in.
2.2kg/ - correct answer ✔✔ lb
3 phase rectifier output = - correct answer ✔✔ 1.33 x input
single phase output = - correct answer ✔✔ 0.9 x input
RMS (effective voltage) = - correct answer ✔✔ 0.707 (PEAK V)
TC = - correct answer ✔✔ R x C (5)???
RPM = - correct answer ✔✔ 60 (frequency) / (poles/2)
, door overlap minimum = - correct answer ✔✔ 5/8" min
door gaps maximum = - correct answer ✔✔ 3/8" max
Gibs minimum = - correct answer ✔✔ 1/4" min
Gate Switch maximum = - correct answer ✔✔ 2"
Passenger Sill to Sill ____ to ______" - correct answer ✔✔ 1/2 to 1-1/2"
Platform Lift Sill ____ to _____" - correct answer ✔✔ 3/8" to 3/4"
Moving Walk maximum = - correct answer ✔✔ 12 degree max
Governors (Car Trip Speed =______ & Overspeed Switch =______) - correct answer ✔✔ Car trip
speed 15-20% greater than contract speed.
Overspeed Switch less than or equal to 90-95% of trip speed
CWT (____%) - correct answer ✔✔ Up to 10% greater than car trip speed
1) A contractor wants to raise the car speed from 100FPM to 125FPM. It currently has a 12"
sheave. What size sheave is required? - correct answer ✔✔ 15"
----Diam = 12, 12"/4=3, 25FPM=3in : 100FPM + 25FPM = 12"+3" =15"
2) An MOV (metal oxide varistor) burns out. You should replace it, but cannot read the Voltage
or resistance. What should you do? - correct answer ✔✔ Replace it with a larger MOV. (630)
Practice Questions
E=__ - correct answer ✔✔ IR
P=__ - correct answer ✔✔ IE
Pie r^2 = - correct answer ✔✔ Area of a circle
231 in^3 /____ - correct answer ✔✔ gal.
25.4mm/__ - correct answer ✔✔ in.
2.2kg/ - correct answer ✔✔ lb
3 phase rectifier output = - correct answer ✔✔ 1.33 x input
single phase output = - correct answer ✔✔ 0.9 x input
RMS (effective voltage) = - correct answer ✔✔ 0.707 (PEAK V)
TC = - correct answer ✔✔ R x C (5)???
RPM = - correct answer ✔✔ 60 (frequency) / (poles/2)
, door overlap minimum = - correct answer ✔✔ 5/8" min
door gaps maximum = - correct answer ✔✔ 3/8" max
Gibs minimum = - correct answer ✔✔ 1/4" min
Gate Switch maximum = - correct answer ✔✔ 2"
Passenger Sill to Sill ____ to ______" - correct answer ✔✔ 1/2 to 1-1/2"
Platform Lift Sill ____ to _____" - correct answer ✔✔ 3/8" to 3/4"
Moving Walk maximum = - correct answer ✔✔ 12 degree max
Governors (Car Trip Speed =______ & Overspeed Switch =______) - correct answer ✔✔ Car trip
speed 15-20% greater than contract speed.
Overspeed Switch less than or equal to 90-95% of trip speed
CWT (____%) - correct answer ✔✔ Up to 10% greater than car trip speed
1) A contractor wants to raise the car speed from 100FPM to 125FPM. It currently has a 12"
sheave. What size sheave is required? - correct answer ✔✔ 15"
----Diam = 12, 12"/4=3, 25FPM=3in : 100FPM + 25FPM = 12"+3" =15"
2) An MOV (metal oxide varistor) burns out. You should replace it, but cannot read the Voltage
or resistance. What should you do? - correct answer ✔✔ Replace it with a larger MOV. (630)
