NEIEP Elevator Installation and Maintenance 400 Practice Exam

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• Which of the following best describes a sleeve bearing?
• Which factor does NOT influence the magnetic flux in a transformer?
• When should lubrication of motor bearings be done?
• What does "travel speed" indicate for an elevator?
• What type of electricity does a split-ring commutator convert?
• What is the primary function of an elevator's governor?
• What is the primary function of a generator in an elevator system?
• What is the maximum rated load for most residential elevators?
• What is the purpose of the elevator's machine room?
• What is the synchronous speed of a 3 phase, 60 Hz, 6 pole motor?
• What consequence can occur from neglecting elevator maintenance?
• Core losses in a transformer are primarily attributed to?
• Transformer eddy currents are known to cause what type of losses?
• How are resistance values typically denoted when expressed in kilo-ohms (kΩ)?
• Why is it essential to comply with local elevator codes?
• What does it mean when saturation occurs?
• What does an elevator's suicide circuit open indicate about its operational readiness?
• If a transformer reads OL between H1 to H2 on a multimeter after isolating the transformer, what does that indicate?
• What is the significance of the travel cable in an elevator?
• What method of armature winding is used for high current applications?
• What is the function of the leveling sensor in an elevator?
• What is the primary purpose of an elevator door lock?
• Which type of elevator uses a hydraulic cylinder to move the cab?
• What is the significance of compliance with safety standards for elevator technicians?
• What purpose does a pit serve in elevator installation?
• How is AC voltage indicated on a voltmeter?
• How does an elevator's safety circuit function?
• In what way does an elevator leveling sensor contribute to safety?
• What does "cabling" refer to in the context of elevators?
• What potential issue is mitigated by emergency lighting in elevators?
• What condition indicates threading on a commutator?
• What does a brake release mechanism do in an elevator?
• When the secondary winding of a transformer is completely shorted, what happens to the primary current?
• What is meant by "emergency power" in elevators?
• If an elevator is pulling through the brake after stopping at a floor, what is a likely issue?
• What measurement indicates the opposition to current flow in a circuit?
• An AC induction motor primarily utilizes which component?
• What is the field protective relay in series with?
• What type of waveform is typically generated by an AC generator?
• What does an open primary winding imply about a transformer's condition?
• An overcompounded elevator demonstrates what behavior when empty?
• Which of the following is NOT a typical safety feature in escalators?
• If the readings on the meter appear to be inaccurate, what should you do?
• What is the primary purpose of an elevator's emergency intercom system?
• How can 2230Ω be expressed?
• What material is used as insulation between the commutator and the armature shaft?
• What type of generator is specifically described as having its pole pieces excited by residual magnetism?
• What happens when the elevator's safety circuit detects a fault?
• What is the inherent current limiter present for a rotating motor armature called?
• What is referred to as the neutral plane in a coil's rotation?
• Which of the following conditions would NOT be a result of mechanical overload in an elevator motor?
• Heavy slot bar markings on an electric motor may indicate?
• In a transformer, what will happen to the primary current if the load on the secondary side increases?
• What type of resistance should a motor or generator commutator ideally show?
• Why might an elevator display not just show "out of service" but also provide additional explanations?
• Which maintenance task is crucial for ensuring elevator brake functionality?
• What is the typical rated speed for residential elevators?
• What kind of doors require passengers to operate them physically?
• What does a reading of 0.790 MΩ indicate?
• What is the final acceleration step for a DC hoist motor?
• What is the primary purpose of adjusting the leveling of an elevator?
• What should the resistance of an armature be when measured from commutator to ground with brushes removed?
• What does the term "leveling" mean in elevator operation?
• What is the purpose of a laminated core in electrical equipment?
• What occurs when a current-carrying wire is placed perpendicular to a magnetic field created by two magnets of opposite polarity?
• How does frequent maintenance impact an elevator's operation?
• When an elementary DC generator converts AC to DC, what process is involved?
• On a reversible D.C. door operator motor, what angle is the brush mounted?
• What happens when voltage change in a pole piece doesn't produce a proportional change of magnetic flux?
• Which component directly influences the speed of a DC motor when adjusting load conditions?
• What is the main purpose of an elevator's indicator light?
• What part of the transformer provides the connection for the ends of the armature coils to the commutator?
• What method is used to resolve residual magnetism to an exciter?
• What method would you use to check for an open primary winding in a transformer?
• Which characteristic is unique to synchronous motors?
• In a basic loop circuit generator, the armature supplies DC power to which component of the DC elevator hoist motor?
• In order to protect internal circuits, how is the 10 amp input jack on a digital multimeter usually protected?
• What does the "rated load" indicate in an elevator?
• What does a hydraulic elevator primarily utilize to lift the elevator car?
• What method is commonly used to stabilize the output of a shunt generator?
• What is the role of the elevator controller?
• What is an important factor to consider when dealing with "out of service" elevators?
• Which type of connection allows the DC series generator to function correctly?
• What is a precision shunt used for measuring?
• Which term is used for the resistance measurement that indicates a very high level, such as infinite?
• In an electric motor, what role does the stator play?
• What is the configuration of the series field in relation to the armature in a DC generator?
• What does a reading of 0 on a voltmeter when testing a known power source indicate?
• How does properly leveling the elevator impact passenger experience?
• What should the resistance of a motor or generator commutator be to ground with the brushes raised?
• How can the speed of a DC motor be changed?
• Which of the following is a safety feature in escalator operation?
• How is armature reaction in a generator compensated?
• The series field in an electric motor is characterized by?
• How does a hydraulic elevator operate?
• What should always be done to protect the meter from damage when measuring unknown voltage?
• What does adjusting the leveling in an elevator system ensure?
• In a separately-excited generator, what are the two circuits called?
• What should be removed to avoid incorrect resistance readings caused by parallel circuit paths?
• What type of transformer has a 1:12 fixed voltage transformation ratio?
• How can you distinguish between automatic and manual elevator doors?
• In an elevator, what does the term "overload" refer to?
• How can CEMF be best described?
• How is hydraulic fluid maintained in elevators?
• What are the two main types of elevators based on their drive systems?
• What role does the hoistway play in elevator operation?
• What phenomenon occurs due to the interaction between the armature and the magnetic field in a generator?
• What is included in the standard procedure for inspecting an elevator?
• What effect does over-compounding have on an elevator during ascent?
• What does "hoisting" refer to in the context of elevators?
• When some of the generator output is used to supply the field current how is the generator described?
• What is a common type of door used in passenger elevators?
• When commutation is good, what color is the commutator?
• Before measuring resistance in an unknown resistor in a circuit, what must you do?
• Synchronous speed of an induction motor is defined as?
• Which code regulates the safety standards for elevators in the United States?
• What is one benefit of having effective emergency lighting systems in elevators?
• How can improper installation affect an elevator's performance?
• What happens to the efficiency of a transformer as it approaches full load?
• What material should be used for seating brushes in elevator systems?
• How does an armature winding affect the output of a generator during heavy usage?
• In elevator design, what does the term "headroom" refer to?
• What is the primary function of a safety edge in an elevator?
• Which component regulates the elevator's movement speed during heavy loads?
• On the resistance scale of a digital meter, what does the lazy 8 symbol signify?
• What are pit ladders used for in elevator maintenance?
• In relation to generators, what is the main advantage of shunt generators?
• What is the inherent current-limiter present for a rotating armature?
• In terms of passenger safety, what key function does emergency lighting serve?
• What do capacity signage in elevators indicate?
• Which factor is essential in determining the rated load of an elevator?
• What kind of maintenance is required for hydraulic elevators?
• What elements make up commutator film?
• Why is it essential to have emergency lighting systems in elevators?
• An elevator that travels faster up when fully loaded is classified as what type of compounded elevator?
• Which safety device prevents an elevator from falling if the hoisting cable breaks?
• What is an advantage of hydraulic elevators compared to traction elevators?
• What is the typical maintenance frequency for elevators?
• What does a meter essentially create when connected to read voltage?
• To what scale should the ammeter be set in order to read a current of 2000 mA?
• How can you effectively reduce ripple in a transformer?
• What would be the result if a meter set to current is connected to a voltage source?
• What primary function does the load weigh scale serve in an elevator?
• How often should elevator brakes be inspected for optimal performance?
• What is the effect of applied voltage on the primary leads current?
• What should drivers always be cautious of when approaching an elevator?
• What does an elementary AC generator have that a DC generator does not?
• Which action is part of the process of adjusting the leveling in elevators?
• What should users expect when an elevator is marked "out of service"?
• What is the concept of "emergency descent" in elevators?
• What is a machine-room-less (MRL) elevator?
• What does the "out of service" indicator on an elevator display panel signify?
• Which component is responsible for keeping an elevator car stationary when not in use?
• What does a "call button" do in an elevator system?
• What is typically indicated by an increased brush wear in a DC motor?
• When the multimeter is set to amps position, the test leads are considered to be in what state?
• What happens to the output of a shunt generator as the load increases?
• How is a sleeve bearing primarily lubricated?
• What is the function of the air supply port in hydraulic elevators?
• Why is having a functioning emergency stop important for elevator safety?
• What does a reading of .250 MΩ represent?
• What is the purpose of an elevator's load weigh scale?
• What should be done regularly to maintain the safety features of an elevator?
• What type of device allows you to measure current without disconnecting wiring?
• What kind of meter would you use to detect a ground in the armature coils?
• What is the final acceleration step for a hoist motor?
• What technology is employed in elevators to facilitate communication during emergencies?
• What action should be taken if an elevator shows the "out of service" message?
• If the secondary winding of a transformer is open, what will happen to the secondary resistance?
• What is indicated by an OL reading on a multimeter testing a transformer?
• What is the primary role of an elevator technician?
• In a DC series generator, when does current flow?
• What is the most common cause of commutator problems in electric machines?
• What effect do laminated armature core pieces have?
• Why is it important for elevator maintenance personnel to verify emergency lighting?
• What does the door interlock system in an elevator ensure?
• What is the primary function of elevator handrails?
• What must elevator technicians check as part of regular maintenance?
• Why is regular inspection crucial for elevator systems?
• What is the significance of the meter specification of ohms per volt?
• What does the term "landing" refer to in the context of elevators?
• Which type of generator provides the most control for varying loads?
• What does the term commutation refer to in electrical systems?
• What is the role of interpoles in a motor?
• What is the role of a counterweight in a traction elevator?
• What is indicated by a voltmeter reading of 0.0V on a known working circuit?
• When the load on a series generator increases, what is the effect on the output voltage?
• Why is friction important in traction elevators?
• What tool would you use to test for leakage resistance to ground?