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When using a hoisting line to install cables, what device could be used to prevent twisting? ---------CORRECT ANSWER-----------------Swivel ling What is the ratio between cable diameter and the size of the loop? --------- CORRECT ANSWER-----------------30 times How fast does the loop in relation to car speed? ---------CORRECT ANSWER---------- -------½ car speed Why are new traveling cables allowed to hang free for a time? ---------CORRECT ANSWER-----------------To relieve torsional stress How must traveling cable be unreeled into the hoistway? ---------CORRECT ANSWER-----------------Place the reel so the cable unreels from the bottom
What is the maximum distance between supports on a vertical raceway? --------- CORRECT ANSWER-----------------15 feet What must be installed every 100 ft in a vertical raceway? ---------CORRECT ANSWER-----------------Strain supports What switch is installed in areas of the country subjects to earthquakes which detects ground motion when an earthquake is imminent? ---------CORRECT ANSWER-----------------A seismic switch What is the minimum overhead clearance for raceways mounted in the machine room overhead? ---------CORRECT ANSWER-----------------7ft What is the maximum length of motor generator leads that may be connected directly to the controller without being run inside a raceway? ---------CORRECT ANSWER-----------------6ft You have 10' length of ¾" rigid conduit which needs to have a 90 degree bend with a 16" stub height. With a 7" take-up, what is the distance from the end of the pipe to the mark where the hickey arrow is aligned? ---------CORRECT ANSWER----- ------------9 in
Which of the following devices are included in a traction elevator safety circuit? -- -------CORRECT ANSWER-----------------Final terminal stopping limits and pit stop switch What is the difference between multi-cord and hoistway wiring cable? --------- CORRECT ANSWER-----------------Hoistway wiring cable has no outer jacket What is another name for large ring terminal connectors? ---------CORRECT ANSWER-----------------Lugs After large wires have been joined, how should the connections be finished? ------- --CORRECT ANSWER-----------------Use rubber tape for insulation and electrical tape for abrasion resistance What is the least number of motor leads that can be found on a 3 phase AC motor? ---------CORRECT ANSWER-----------------Three With standard 3 phase AC motor lead marking, what is the marking on the other end of the winding that begins at T1? ---------CORRECT ANSWER-----------------T
What is the common error when using wire nuts? ---------CORRECT ANSWER-------- ---------Stripping too much wire Where position indicators are used on several floors, they are all connected how? ---------CORRECT ANSWER-----------------In parallel What is meant by isolation? ---------CORRECT ANSWER-----------------Mounting the car on rubber blocks Where is safety switches located? ---------CORRECT ANSWER-----------------Under car or on the car top What is the minimum number of lamps required in the car light fixture? --------- CORRECT ANSWER-----------------Two What is your best source of information for fixture specifications? --------- CORRECT ANSWER-----------------Job abstract of the final layout What are the two most common functions of load weighing? ---------CORRECT ANSWER-----------------To control the generator field and initiate express operation
What safety device is required with automatically closing, vertical sliding, freight doors? ---------CORRECT ANSWER-----------------A warning bell What can be shown on a sixteen segment display? ---------CORRECT ANSWER------- ----------Numbers and letters What is the minimum number of spare wires that should be pulled? --------- CORRECT ANSWER-----------------10% When making connections at terminal posts, how should the traveling cables be connected? ---------CORRECT ANSWER-----------------on the top When more than one screw is used as a terminal, how are the screws connected? ---------CORRECT ANSWER-----------------with a shorting bar What type of solder must be used on electrical wires? ---------CORRECT ANSWER--- --------------Rosin cor
What distance away from the floor is a solid state driven elevator allowed to move with doors open? ---------CORRECT ANSWER-----------------3 in What is the name of the code that is the accepted standard for all electrical wiring in the United States? ---------CORRECT ANSWER-----------------National Electrical Code What is the maximum distance between supports of a vertical raceway, based on NEC Article 620-32? ---------CORRECT ANSWER-----------------15 feet What type of flex would be used to pipe a switch in a wet location? --------- CORRECT ANSWER-----------------Liquidtight Flex What is the name for the complete metal system of duct, conduit and flex that protects the wiring? ---------CORRECT ANSWER-----------------Raceway How is the work divided when planning piping and wiring of an elevator installation? ---------CORRECT ANSWER-----------------Hoistway, car and machine room
How are wire sizes larger than 4/0 measured? ---------CORRECT ANSWER------------- ----In circular mils What is the abbreviated term for current carry8ing capacity? ---------CORRECT ANSWER-----------------Ampacity What is the minimum size wired for lighting circuits in an elevator installation? ---- -----CORRECT ANSWER-----------------# What is the special about wire used for the interlock circuit? ---------CORRECT ANSWER-----------------It must be rated for 200 degrees C What is the smallest wire that is permitted in an elevator installation? --------- CORRECT ANSWER-----------------# When bending conduit, what is the maximum number of decrees of bend allowed between access points? ---------CORRECT ANSWER-----------------90 degrees What is the reference point on the thin-wall bender for the finish line of a back to back bend? ---------CORRECT ANSWER-----------------The star point
What is the total in degrees of the bends in a three-bend saddle? ---------CORRECT ANSWER-----------------90 degrees You have 10' length of ¾" rigid conduit which needs to have a 90 degree bend with a 16" stub height. With a 7" take- up, what is the distance from the end of the pipe to the mark where the hickey arrow is aligned? ---------CORRECT ANSWER-----------------9 inches 21 ---------CORRECT ANSWER-----------------Size of conduit is determined by the inside diameter 22 ---------CORRECT ANSWER-----------------NEC states wire used in elevators must have flame retardant insulation 23 ---------CORRECT ANSWER-----------------Thin wall pipe, the radius of the bend is controlled by the bender 24 ---------CORRECT ANSWER-----------------Three bend offset, center bend is 45 degrees, other bends are 22 ½
75 ---------CORRECT ANSWER-----------------Person can be electrocuted by. amperes 76 ---------CORRECT ANSWER-----------------Final limits are set up to operate 4- 8 inches beyond the floor 77 ---------CORRECT ANSWER-----------------When the pit is 5'6" deep second stop switch 78 ---------CORRECT ANSWER-----------------Group of insulated conductors enclosed in protective jacket is a MULTICORD 79 ---------CORRECT ANSWER-----------------Non insulated conductor's are hoist way wiring cable What factor is reduced by the addition of a deflector sheave? ---------CORRECT ANSWER-----------------Arc-length of contact
If a hydraulic pump makes a hammering noise, what is the most likely cause? ------ ---CORRECT ANSWER-----------------It is rotating in the wrong direction If a car is to be used as a running platform without the cab, how many counterweights should be installed? ---------CORRECT ANSWER-----------------Slightly more than needed to balance car Why is loss of hoist rope traction hazardous? ---------CORRECT ANSWER--------------- --Control of the elevator is lost Once SCR is gated how long does it continue to conduct? ---------CORRECT ANSWER-----------------Until the AC sine wave passes through zero What is the approximate density of cast iron? ---------CORRECT ANSWER-------------- ---¼ per cubic inch What is the function of the compensating sheave switch? ---------CORRECT ANSWER-----------------It opens if the sheave moves up or down beyond limitsIt opens if the sheave moves up or down beyond limits
If the DC output of a three phase rectifier is lower that specified, what would the most likely cause? ---------CORRECT ANSWER-----------------One input phase is missing At what point is the main motor field voltage highest? ---------CORRECT ANSWER-- ---------------When the elevator is running When might you place jumpers on the overloads? ---------CORRECT ANSWER-------- ---------Never jump out the overloads If the generator is rotating and you apply voltage to the field but no armature voltage is produced, what is most likely wrong? ---------CORRECT ANSWER----------- ------Generator field is open If there is voltage at the generator armature but not at the motor armature, what is most likely wrong? ---------CORRECT ANSWER-----------------The loop circuit is open What is typically used in a solid state motor drive system to measure actual motor speed? ---------CORRECT ANSWER-----------------Tachometer
100 ---------CORRECT ANSWER-----------------SCR will not conduct until it is gated 101 ---------CORRECT ANSWER-----------------SCR convert AC to DC which of the following statements applies to facias? ---------CORRECT ANSWER----- ------------Hanger covers should be installed after the interlock and door adjustments have been completed When installing Hostway doors, what is the purpose of the sight guard? --------- CORRECT ANSWER-----------------Used to provide a clean door edge that blocks the Hostway from publics view You have received a large shipment of doors for a high-rise installation and have to get them stored properly. Which of the following statements is correct? --------- CORRECT ANSWER-----------------Store the doors vertically on the long edge When setting sills, which of the following statements applies? ---------CORRECT ANSWER-----------------Worth the effort to make a template to determine sill locations on a high-rise
