Elevator — Questions and answers

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What year did Elisha Graves Otis give his dramatic demonstration of the safety hoist?

Choices

  1. A. 1852
  2. B. 1854 ✓
  3. C. 1860
  4. D. 1875

Answer: B. 1854

From page 1

What made Elisha Graves Otis want to invent a safer hoist?

Choices

  1. A. He wanted to build the tallest building in the world.
  2. B. He was bored and wanted a new hobby.
  3. C. He saw the danger to his workers and equipment from unreliable hoists. ✓
  4. D. His boss told him to invent something new.

Answer: C. He saw the danger to his workers and equipment from unreliable hoists.

From page 4

What happens if the main hoisting rope of an Otis elevator breaks?

Choices

  1. A. The elevator speeds up.
  2. B. Spring-loaded pawls grab onto notched rails to stop the car. ✓
  3. C. The elevator swings from side to side.
  4. D. A bell rings loudly.

Answer: B. Spring-loaded pawls grab onto notched rails to stop the car.

From page 6