Practice Test GeeksEIAT - Elevator Industry Aptitude Test Practice Test
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Mechanical Aptitude Flashcards

7 cards from real EIAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Mechanical Aptitude flashcards as text

  1. A wire rope used in elevator hoisting is inspected and found to have broken wires. According to general safety standards, a rope should be replaced if it has how many broken wires in one lay length?

    Answer: 6 or more

    Industry standards typically require replacement of hoist ropes when 6 or more broken wires are found in one rope lay length.

  2. In a block and tackle system using 4 rope segments supporting the load, a 400 lb load requires approximately how much pulling force (ignoring friction)?

    Answer: 100 lb

    With 4 supporting rope segments, the mechanical advantage is 4, so the effort force is 400 ÷ 4 = 100 lb.

  3. What is the function of a worm gear drive in elevator machinery?

    Answer: Provide high speed reduction and self-locking capability

    Worm gear drives achieve large speed reductions in a compact package and are often self-locking, preventing back-driving under load.

  4. If a spring is compressed by 3 inches with a force of 90 lb, what force is needed to compress it an additional 1 inch (to 4 inches total), assuming it follows Hooke's Law?

    Answer: 120 lb

    The spring constant is 90 ÷ 3 = 30 lb/in, so 4 inches of compression requires 30 × 4 = 120 lb.

  5. A sheave (pulley wheel) in an elevator system with a worn groove will most likely cause:

    Answer: Increased rope wear and possible slippage

    Worn or mismatched grooves reduce the contact area between rope and sheave, accelerating rope wear and reducing traction.

  6. Which principle explains why fluid velocity increases when it flows through a narrower section of pipe?

    Answer: Bernoulli's Principle / Continuity equation

    The continuity equation (part of Bernoulli's Principle) states that fluid must speed up in a narrower cross-section to maintain constant flow rate.

  7. A technician notices that an elevator motor is running hot. Which of the following is the LEAST likely cause?

    Answer: Counterweight properly balanced

    A properly balanced counterweight reduces motor load and would not cause overheating — it is a normal, desirable operating condition.