NEIEP Machine Room Maintenance (550) Practice Test

These questions are part of the practice quiz. Start practicing

• Dash pot overload fluid replacement should be done only with manufacturer recommended types.
• An _______ or _______ glass can be used to view the oil level in a sleeve bearing.
• Which item is NOT one of the three important specifications of fuses?
• Brake operation should be checked for proper _______ and _______.
• Dash pot overloads should trip almost immediately if tested with the _______ removed.
• Always check the manufacturers specifications when lubricating the brake solenoid.
• Grease lubricated open bearings require frequent lubrication.
• Which of the following can result if too much grease is forced into a shielded bearing?
• Which describes the correct approach to testing an energized circuit?
• You can replace a fuse with a higher current capacity fuse.
• A _______ can be used to determine the clearance between the armature and the pole pieces.
• Is cleaning hoist ropes with a rag that has been soaked in an approved cleaning fluid acceptable?
• With a given AC input voltage, which rectifiers produce a higher DC output voltage than selenium rectifiers?
• Which interval is used for the 125% load test on brakes?
• In an electronic selector system, which term denotes the value stored in memory that represents the exact floor location?
• When cleaning, _______ should be kept away from the commutator and brushes.
• What should you do with the parts cabinet and stock parts that are frequently replaced?
• The _______ supplies DC power to areas of the system that require it, such as fields, brakes and relays.
• An anti-static ground wrist strap should be worn during maintenance operations to protect sensitive components from static discharge.
• Which of the following is a common sign to inspect on relay contacts?
• It is important to seat the brushes so that there is good _______ between the brushes and the commutator.
• When handling PCBs, avoid touching which feature to minimize damage?
• Which statement best supports timely handling of customer complaints?
• To prevent rotation of components that extend through the controller board when tightening connections, you should use what?
• Motor and generator components must be _______ from each other before testing with a megger.
• What is the proper practice when inspecting field pole pieces for signs of wear or damage?
• Never pass a solid-state board to another person unless _______ are wearing anti-static wrist straps.
• In a system with an electronic selector, which term describes the stored value representing the exact floor location?
• Two materials used in the composition of sleeve bearings is _______ and _______.
• Selectable overloads should never be placed in the manual reset position.
• What preparation is recommended before megger insulation testing on motor and generator components?
• Excessive grease can cause a bearing to _______ than normal.
• Select the statement that correctly describes a selector's role.
• The device that prevents two opposite functioning relays from closing at the same time is called a _______.
• Which action is recommended when lubricating brake solenoids?
• What condition in rotating machinery is described by a gap between a shaft and bearing race that allows axial movement?
• Around rotating equipment, which items should you avoid wearing?
• What dictates items to be serviced and their frequency?
• Which statement about field pole pieces in a generator is true?
• Which statement about verifying voltage level and polarity before testing is true?
• Which action should you take regarding coordinating with building personnel when working on a jobsite?
• What is a recommended practice for organizing frequently replaced parts?
• Contactor air gap should be adjusted in which two states?
• When replacing a capacitor, which rating must be met or exceeded?
• The brake is required by code to hold 125% of the rated load. This testing should occur at _______ intervals.
• To prevent movement of the car during overload testing the _______ leads should be removed.
• Which practice directly supports safe and efficient machine operation by keeping areas organized and clean?
• The approved method of troubleshooting an energized circuit involves a meter lead permanently attached to a reference and the other lead probing the circuitry.
• Bearing friction and wear can be reduced through proper lubrication.
• The large amount of current used to achieve full brake pick is needed to overcome the _______ forces of the brake _______.
• _______ and _______ straight-line prints for orderly access to various electrical circuits.
• Which statement about carbon dust in electrical equipment is true?
• Dirty oily rags should be stored in an airtight plastic.
• It should not be attempted to pump grease into a sealed bearing.
• Capacitors can store lethal voltages for days after power is removed.
• The statement that cleaning and lubrication can be performed with the MG set running is _______.
• Oil is carried to the shaft in a sleeve type bearing by a _______ or _______.
• The machine room should be equipped with adequate _______ and _______.
• Is it true that attending to minor customer complaints can usually be postponed?
• Which statement about status updates during problem resolution is correct?
• Thermal cycling of resistor connections can cause which failure mode?
• Heat, vibration, age and corrosive atmosphere can cause insulation to develop a _______ path to ground.
• Sleeve bearing oil should be changed at least annually or if it becomes cloudy.
• The frequency that armature and field connections should be checked for tightness is at least _______.
• What guidelines should be followed when servicing or cleaning a solid state motor drive system?
• Where are most high current and high voltage operations of a motor-generator set performed?
• Armature connections are commonly made of which metal to enable current transfer while providing malleability?
• Relays and their contacts operate in a routine depicted on which type of diagrams?
• Maintenance frequency and the exact procedures vary by manufacturer and the duty of the equipment.
• Even though defective solid-state boards should be treated as if they were _______.
• When an electronic selector is used a _______ representing the exact location of the floor is stored in memory.
• A counterweight governor and safeties must be installed whenever there is _______ below the hoistway.
• Brush holders should be evenly _______ or _______ around the commutator.
• During cleaning, solvents should be kept away from the commutator and brushes. Which option reflects this practice?
• Good housekeeping can help you to discover defects before they become problems.
• Electrical neutral is adjusted by shifting the _______ location with respect to the _______.
• A _______ is used to check for insulation breakdown in armatures and fields.
• Printed circuit boards should be handled by their _______.
• Polarity must be identified before connecting test leads. Which statement is true?
• After power is removed, large capacitors should be checked for stored what?
• Every job should be equipped with an approved first aid kit, MSDS, emergency phone numbers, and type ABC Fire extinguisher.
• Is it important to show willingness to the customer to provide premium elevator service?
• Which statement correctly describes how increased voltage affects brake decay time?
• What term describes the electrical interaction between the brushes and the commutator?
• Which statement best describes the role of field pole pieces?
• Which action best supports safe handling of carbon dust in the machine room?
• Before megger testing, the circuit components should be _______ from the power supply.
• Is it true that silicon rectifiers produce higher DC output voltage than selenium rectifiers for the same AC input?
• The minimum insulation resistance between windings and ground is 0.5 megohms.
• What should be verified about voltage level and polarity before performing maintenance?
• Which function is typically controlled by a selector in elevator control systems?
• What is the primary purpose of keeping straight-line prints for electrical circuits?
• The statement 'Cleaning and lubrication can be performed with the MG set running' is false. Which option completes this?
• A selector is a mechanically or electrically driven device that initiates or controls the following functions:
• The presence of bronze fillings in gearcase oil can indicate wear of which components?
• A healthy electrolytic capacitor shows high resistance on a low-ohm meter test.
• Which hazards should be mitigated to protect work areas?
• A _______ can be used to determine the clearance between the armature and the pole pieces.
• In a brush holder arrangement, what pattern around the commutator ensures even wear?
• Ground lights should be tested and kept in working condition. Which statement is true?
• Power resistors used in controllers are wound with which conductor and made of which material to withstand high temperatures?
• Connections on power resistors can loosen due to repeated _______ cycling.
• Leaving elevator keys in the control station is recommended.
• Which device is commonly used to deliver lubricant to the bearing surfaces in sleeve-type bearings?
• Which item is not listed as part of the approved equipment needed on every job?
• If the seals on a governor are missing it is necessary to _______ the governor.
• The _______ or walking beam is used to prevent two opposite functioning relays from closing at the same time.
• Under ideal conditions the resistance between ground and the armature windings should be near _______.
• Should the customer be kept aware of the status of a problem?
• Before servicing the governor, _______ and _______ the main line disconnect.
• Ground lights are primarily used to indicate the grounding status of equipment. Which statement is true?
• Improper brush tension can cause both _______ and _______ wear.
• Which statement is true about anti-static wrist straps?
• Operating speed is one of the key fuse specifications. What does it describe?
• Which statement about voltage level and polarity testing is true?
• Which statement about seating brushes is correct?
• Shunt wires on relays often fail because they move every time the relay energizes and de-energizes.
• The extent of machine room maintenance required is related to the _______, _______, and _______ of equipment.
• What is a safe approach to removing carbon dust from equipment interior?
• What term describes placing a tag on a disconnect to indicate it is out of service?
• Fuses used to protect sensitive solid state circuits are required to be ______ types.
• To prevent rotation of devices that extend through the controller board _______ when tightening their connections.
• Capacitors in control circuits may retain dangerous voltages after power is removed, making it important to discharge capacitors before servicing.
• Dash pot overloads should trip almost immediately if tested with the fluid removed.
• If the voltage applied to brake coil is increased the brake decay time will increase.
• Measure and record the brake spring dimensions before disassembly.
• Which term best describes the router mechanic's relation to the customer?
• Can contactors be safely operated for test purposes without their arc barriers in place?
• The statement 'All power supplies used in a solid state motor drive are highly filtered and regulated' is
• Which materials are used for the winding and casing of power resistors to withstand high temperatures?
• What is a likely consequence of inadequate lubrication for bearings?
• All power supplies used in a solid state motor drive are highly filtered and regulated.
• Compared with ball bearings, sleeve bearings typically exhibit what characteristic?
• A _______ can result if too much grease is forced into a shielded bearing.
• Which statement about maintenance of field pole pieces is accurate?
• Which type of controllers can radiate excessive heat and noise?
• Two Types of governors are _______ and _______.
• Sealed bearings require lubrication bi-annually.
• The movement of the selector is _______ to the movement of the elevator car.
• As the elevator begins to accelerate through the partially set brake the controller sends full _______ to the brake coil to pick it fully.
• Follow your company's approved Lock out Tag out procedure.
• A thermal overload uses a _______ strip to activate a contact that opens a circuit and removes power to the motor.
• The frequency of maintenance operation and the exact procedures vary by manufacture and the duty of the equipment.
• The statement 'A relay selector is commonly used on high-speed high-rise traction elevators' is true or false?
• Grease lubricated open bearings require frequent lubrication.
• Cleaning and lubrication are two important duties of the elevator maintenance mechanic.
• An open ball or roller bearing can receive grease from _______
• Wear safety glasses at all times.
• In the eyes of the customer, the router mechanic represents which entity?
• Sand asbestos brake pads to remove glazing and contamination from oil or grease.
• Which type of bearing has the highest coefficient of friction?
• Which instrument is used to check insulation resistance in armatures and fields?
• Before greasing a bearing with a grease gun remove the _______.
• An _______ or _______ glass can be used to view the oil level in a sleeve bearing.
• Which safety practice around rotating equipment is correct?
• Mechanical selectors are driven by a _______ or _______.
• A low ohmmeter reading of an electrolytic capacitor is an indication it is bad.
• A _______ can be used to view the oil level in a sleeve bearing.
• Which statement about ground lights in electrical equipment is true?
• Current carrying members of armature connections are _______ and tend to stretch and loosen.
• Which type of bearing wears silently without warning of failure?
• Leave keys in the car station that control the operation of the elevator.
• Where should visits to the job site for reported problems be documented?
• Printed circuit boards removed from their sockets can be more easily damaged by _______ than those installed.
• Loss of exciter output or voltage reversal can result from _______ at the brushes.
• The oil level in a geared machine should be maintained at _______.
• When leaving or completing a job, what should you do with building personnel?
• What condition can cause insulation to develop a path to ground?
• The controller delivers full current to the brake coil during acceleration to ensure full pickup.
• True or False: Use emery paper to seat brushes.
• There should be no visible _______ in a hoist motor shaft of a geared machine during acceleration and deceleration.
• It should not be attempted to pump grease into a _______
• Which of the following is true about anti-static precautions?
• Following proper safety procedures should be practiced on a daily basis.
• The presence of _______ in the gearcase oil can be an indication of a problem.
• A relay selector is commonly used on high-speed high-rise traction elevators.
• Which statement about carbon dust in electrical equipment is accurate?
• Proper neutral setting important to keep _______ at a minimum.
• Which factor is minimized by proper neutral setting in motor drive systems?