NEIEP 800 final review questions and answers 202324 with complete solution

The total weight of your elevator (force) is 8100 lbs. and its plunger area is 50 square inches. What is the system pressure? - 162 psi Refer to the NEIEP Moving Walk Final Layout. What is the correct wellway-to-wellway distance? - 134' 11" Electrolysis is caused by which of the following? - Stray current corrosion and Galvanic corrosion BOTH ARE CORRECT When using wire rope, the diameter of the sheaves must be how many times the diameter of the suspension ropes? - 30 Wye-Delta starting is used for which of the following? - Reduced current starting You need the area of the plunger to calculate the pressure of the hydraulic system. Your plunger is 8 inches in diameter. What is it's area? - 50.27 square inches Which of the following provides mechanical interlocking of contactors? - Interlock contacts As the certified welder on the job you must weld two cylinder pieces. How must you join the two pieces? - Tack welds then a fill bead Once a plunger joint has been completed, what steps should be followed to prevent damage to the packing? - Sand with emery cloth Under which of the following conditions will the buzzer (BZT) sound? - When the handrail speed is 15% below step speed. Refer to the NEIEP Escalator Final Layout diagram. What is the total distance from the first floor finished floor height and the second floor finished floor height? - 13' 6" Refer to the NEIEP Escalator Final Layout diagram. What is the correct measurement to align the truss in the center of the wellway? - 7' 6 1/2" What is the function of the lower newel wheel on a moving walk with solid balustrades? - It acts as an idler Which of the following will determine the leveling speed of an elevator? - Rate of flow in gpm Which of the following best describes the rack and pinion drive motor brake? - It is spring set and electrically released Car door switches in LULA elevators are required to operate no more than how many inches from full closed? - - 2" What is the maximum rated capacity of an inclined platform lift? - 750 Ibs.. Refer to the NEIEP Moving Walk Straight-Line Diagram. If both inspection switches (INSP sw.) are in the downward position, how will that affect the operation of the walkway? - The walkway would not run. Refer to Table 2. What is the capacity of a non-fixed 5X 3%" beam that spans 9 feet and weighs 14.75 Ibs. per linear foot? - 2000 lbs Why is it important to only operate line starters with their covers in the proper location? - To prevent flashover between contacts What is the maximum speed in ft/min. of a residential elevator?. - 40 ft/min. On a vertical platform lift the stop button must be located at what height above the platform floor? - between 48 and 15 inches Two line starters are required for what type of AC motor control? - Wye-Delta In order to perform a pressure relief test, which circuits would have to be temporarily bypassed? - The up limit switches What code do most issues regarding the installation of temporary hoists fall under? - ANSI A10.4 There is a problem with the UP valve and the low oil timer has tripped. What is the expected result? - The car returns to the lowest floor Which of the following best describes a one person pressure relief valve test? - A single mechanic operates the pump from outside the machine room and records relief pressure. Rack and Pinion pit structures consist of which of these components? - Foundation, base enclosure, buffer springs The elevator is running erratically and you want to clean the valve screen. What must you do to ensure that oil doesn't leak when you remove the screen? - Close the machine room shutoff valve. If electrolysis erodes the bottom of the hydraulic cylinder, which of the following provides a measure of safety? - Safety bulkhead at the bottom of the cylinder Safety hooks are best described by which of the following? - Mounted to the frame below the lowest pinion If a gauge is used to measure system pressure with the elevator at rest and the size of the plunger is known, how can the total weight of the elevator be calculated? - Multiply pressure times area ASME code permits a scavenger pump or which of the following to collect oil leaked from the gland packing? - 5 gallon container What are the most common types of drive units for stairway chairlifts? - Winding drum and rack & pinion Approximately how many gallons are required to raise a 9" plunger 30 feet? - 99.1 gallons Which of the following practices should be followed when initially lifting a load? - Lift the load a few inches, then recheck all rigging. What must be done to prevent hoist car run away prior to removing the motor assembly from the gear box on counter weighted hoists? - The cage must be tied down What component of a permanent installation hoist may help prevent over speeding of the car during manual release of the motor brake? - Centrifugal brake How is the right or left side of a stairway determined? - Standing at the bottom and looking up. What type of pump system delivers constant volume at all pressures? - Positive displacement gear pump What best describes the pinion of the governor safety device? - It free wheels until the hoist exceeds tripping speed in the down direction What is the maximum allowable rated load for a LULA elevator? - 1,400 Ibs.