Conceptual Actual Emended Exam Questions
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1. What NEC article governs the installation of elevator-related wiring?
ANSWER NEC Article 620
2. What is the minimum vertical clearance between the hoistway wall and the
traveling cable loop?
ANSWER 4 inches
3. A car is given a Annual Static Load Test. The car drifts down 15 inches in ten
minutes with no noticeable oil leak. Where is it leaking?
- ANSWER the annual cylinder test (Static Load Test) is required on
unexposed cylinders.The test is performed after the relief pressure test by
placing the empty car at any location and marking the location of the sill or
jack to determine if there is any movement. Any movement that can not be
accounted for by temperature change,valve leakage,or visible leaks after 15
minutes indicates an underground leak.
4. They give you a voltage of 480 on Primary and 216 on secondary and a
current and asked which transformer you would need to order.
1KVA 1-1 , 2KVA 2-1 , 3KVA 2-1
,To Answer Current is needed. also helps to know if Single Phase or Three Phase
- ANSWER Single Phase Transformers and Three Phase Transformers
require 2 pieces of information:
1. The Load Line to Line voltage (V) volts
2. The Maximum Load phase current (I) current
For a Single Phase Transformer (Calculation) KVA = (V x I) ÷ 1000 =
For A Three Phase Transformer (Calculation)
Note: (1.732) is the numerical value for the (square root of 3) or (3√)
KVA = (V x I x 1.732) ÷ 1000 =
KVA = (V x I x 3√) ÷ 1000=
5. What’s the purpose of the governor rope tension sheave?
ANSWER To maintain constant tension on the governor rope and ensure
proper operation of the safety device.
6. If you discover a missing step wheel on an escalator, what component is
designed to detect this fault?
ANSWER Step level switch (sag switch)
7. You are testing an elevator with a rated car speed of 500 fpm. At what
minimum speed should the car safeties set. - ANSWER 15% 575Fpm
15% is the minimum tripping speed for safties
90 % for electronic trip device
15 x 500 ÷ 100 = 75
,75 + 500 = 575
8. One of the many hazards in the elevator industry is one of the most obvious
dangers you could face in construction and modernization, Which of the
following is that one?
- ANSWER Falls
9. Q: What happens when an encoder output displays a noisy or inconsistent
square wave?
ANSWER The encoder may be misaligned or have a damaged optical
sensor.
10.What is the primary function of a surge suppressor in a solid-state
controller?
ANSWER To protect sensitive electronic components from voltage
spikes or transient surges.
11.When drilling through solid rock, which method is most effective?
ANSWER Percussion rotary drilling with a button bit.
12.When installing a plunger, how do you prevent damage during lowering into
the cylinder?
ANSWER Use guide spacers and a controlled rigging system to lower the
plunger slowly.
, 13.What is the formula for calculating the required torque to tighten an anchor
bolt?
ANSWER Torque = K × D × P
(K = constant, D = bolt diameter, P = preload)
14.Q: A geared traction machine is producing a loud whining noise at high
speed. What is the likely cause?
ANSWER Worn or misaligned gears.
15.Q: What do you use to check squareness between rail brackets and the
building structure?
ANSWER A framing square or machinist’s square.
16.Q: On a 12-floor elevator job, each car requires a hoistway access switch.
How many access switches must be installed if there are 3 cars?
ANSWER 6 total (2 per car: top and bottom landing)
17.Q: What is the primary risk if the traction elevator's counterweight exceeds
the total car and rated load weight?
ANSWER The car may rise uncontrollably or lose traction during
descent.
18.Q: If you receive a call to troubleshoot an elevator with no hall calls and an
idle controller, what’s your first step?
ANSWER Check for mainline power and controller voltage input.