Elevator Mechanic (ELEVATORMECHANIC)

Elevator Mechanic Exam Review Questions with 100% Correct Answers – COMPLETE SOLUTION. A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12" sheave. What sheave is required? - CORRECT ANSWER 125/100=1.25x12"=15" sheave A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or resistance. What should you do? - CORRECT ANSWER Check circuit voltage On a Ward-Leonard circuit the break is set, but the motor is trying to s...

If the pulley falls off a door operator, what likely happened? Correct Answer: The set screw probably came out When replacing a circuit board in a controller, what should you do after the power is off? A) use a surge protector, B) Use the proper PPE, C) Use a grounding wrist strap. Correct Answer: C) Use a grounding wrist strap What are demarcation lights used for on escalators? Correct Answer: To give a visual indication of the gap between steps at the lower and upper ends. Who give...

Which of the following is a term used to describe a body harness used in conjunction with a shock absorbing lanyard? Correct Answer: Personal fall arrest system A mechanic is working on a construction job, and finds the carpenter using a powder activated tool to anchor wall track. Of the following, which precaution should the mechanic take? Correct Answer: Wear hearing protection Which is the best way to communicate with your coworkers while you are in the machine room and they are worki...

In a modernization they plan on moving the controller 30 feet away which ends up resulting in a voltage drop. What do you do? A) Call electric company for a step-up transformer, B) Use a bigger wire. Correct Answer: B) Use a bigger wire. Governor trips at 115% of rated speed, the over speed switch trips at 90% of the 115%. Correct Answer: If you are cutting something with a power saw, which way does piece you are cutting face. Up or down? Correct Answer: Down. They give you a voltag...

E=__ Correct Answer: IR P=__ Correct Answer: IE Pie r^2 = Correct Answer: Area of a circle 231 in^3 /____ Correct Answer: gal. 25.4mm/__ Correct Answer: in. 2.2kg/ Correct Answer: lb 3 phase rectifier output = Correct Answer: 1.33 x input single phase output = Correct Answer: 0.9 x input RMS (effective voltage) = Correct Answer: 0.707 (PEAK V) TC = Correct Answer: R x C (5)??? RPM = Correct Answer: 60 (frequency) / (poles/2) door overlap minimum = Corr...

Car running up keep stopping why? Correct Answer: Contact is not deenergizing in push button Third-floor bulbs burn out why? Correct Answer: Shorted resistor Car will not travel to second floor without a third-floor me a call and will not go down from three without a second-floor hall, what's the problem? Correct Answer: 2Fl 4/6 Why won't motor start? Correct Answer: MOL1 95/96 Car doors closed and won't run what do you check? Correct Answer: Check for voltage at four and fiv...

ASME Correct Answer: American Society of Mechanical Engineers DOSH Correct Answer: Division of Occupational Safety and Health LADBS Correct Answer: Los Angeles Department of Building and Safety Alteration made to conveyance shall comply with ASME A17.1-204 Section Correct Answer: 8.7 The seismic section of ASME A17.1-2004 and alterations made to conveyances must also comply with this section Correct Answer: 8.4 What must be submitted to the applicable Division Elevator office...

A Latching relay: Used for call registration,direction selection or as selector relays Two types are: Set/Rest are electrical and Mechanical Latching relays Need to know latching relay symbol, Its a box with shaded triangle in lower right hand corner. Correct Answer: Which relay do you need to Order 710 Pg, 7 RPM = 60 ∙ ƒ ÷ P÷2 = Step 1. 60 x Frequency (Hz.) = Step 2. Poles ÷ 2 = Take answer 1 and ÷ by answer 2 = Correct Answer: Know the formula for RPM 435 Pg. 5 If y...

RPM formula Correct Answer: 60 x (Frequency) / (P/2) # of counterweights formula Correct Answer: CWT Governor Tripping Speed Correct Answer: Tripping speed should be 10% Higher then Car Govt Tripping Speed Total CWT weight equals? Correct Answer: Generally weight of the car plus 40% of capacity load. EX. 5000lb car with 2000lb capacity. CWT = 5k + 800(40% x 2k) = 5800 Watts (P) Correct Answer: ExI RxI^2 E^2/R Volts (E) Correct Answer: RxI P/I Square root of PxR Amps ...

wrench used for rail installation Correct Answer: spud wrench The minimum clearance form the floor to the suspended ceiling is: a. 80" b. 96" c. 7'3" d. 8'2" Correct Answer: a. 80" what should you be aware of when removing a cab for replacement? a. The weight that is to be removed from the ceiling. b. The original weight and counterbalancing. c. How much the cab was out of square. d. Cover the panels so they do not get banged up. Correct Answer: b. The original weight ...