NEIEP 550 MACHINE ROOM MAINTENANCE
QUESTIONS WITH VERIFIED ANSWERS
The setting of a car governor electrical contact on cars 500 foot a minute or less must
be below what percentage less then the car governor tripping speed - Answers - 10%
The mechanical tripping speed of the governor cannot be lower than what percentage of
the car speed - Answers - 115%
Which of the following is the most important part of any job in an elevator industry -
Answers - Safety procedures
What function does a starter panel perform - Answers - Starting the MG set
What could be the cause of an intermittent loop overload trip - Answers - Brake not
lifting, properly the car is overloaded,excessive motor bearing friction
What is the purpose of a relay Armature residual guard - Answers - Prevents relay from
failing to drop due to residual magnetism
What is the result of too large of a relay Armature airgap - Answers - Positive pick up
may be lost
How is a magnetic blowout coil wired in relation to the circuit it's contact controls -
Answers - Series
What should be observed before performing maintenance on a really logic controller -
Answers - Have replacement parts available, protect the area below your work area,
lock and tag out the mainline
What is the purpose of options-isolators On solid state controllers - Answers - To
interface high and low voltage
What is the maximum soldering iron wattage for use on printed circuit boards - Answers
- 40w
What is the process called that is applying a small amount of solder on the soldering tip
to allow maximum heat transfer - Answers - Tinning
Why is it necessary to isolate a component before taking an ohmmeter measurement -
Answers - To eliminate parallel resistance
QUESTIONS WITH VERIFIED ANSWERS
The setting of a car governor electrical contact on cars 500 foot a minute or less must
be below what percentage less then the car governor tripping speed - Answers - 10%
The mechanical tripping speed of the governor cannot be lower than what percentage of
the car speed - Answers - 115%
Which of the following is the most important part of any job in an elevator industry -
Answers - Safety procedures
What function does a starter panel perform - Answers - Starting the MG set
What could be the cause of an intermittent loop overload trip - Answers - Brake not
lifting, properly the car is overloaded,excessive motor bearing friction
What is the purpose of a relay Armature residual guard - Answers - Prevents relay from
failing to drop due to residual magnetism
What is the result of too large of a relay Armature airgap - Answers - Positive pick up
may be lost
How is a magnetic blowout coil wired in relation to the circuit it's contact controls -
Answers - Series
What should be observed before performing maintenance on a really logic controller -
Answers - Have replacement parts available, protect the area below your work area,
lock and tag out the mainline
What is the purpose of options-isolators On solid state controllers - Answers - To
interface high and low voltage
What is the maximum soldering iron wattage for use on printed circuit boards - Answers
- 40w
What is the process called that is applying a small amount of solder on the soldering tip
to allow maximum heat transfer - Answers - Tinning
Why is it necessary to isolate a component before taking an ohmmeter measurement -
Answers - To eliminate parallel resistance
