Steam Engine · World History

Which critical innovation did James Watt add to the steam engine to drastically improve its fuel efficiency?

  1. A high-pressure safety valve
  2. A separate condenser
  3. A set of rubber gaskets
  4. An internal combustion chamber
Show answer and explanation

Correct answer: A separate condenser

Watt realized that the Newcomen engine wasted energy by cooling and reheating the cylinder in every cycle. By adding a separate condenser, the main cylinder could remain hot at all times, reducing fuel consumption by about 75%.

Difficulty: Medium Question 2 of 20

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