Asked by drishika gulati on Jul 12, 2024
Verified
Which energy conversion device has the highest energy efficiency?
A) human body
B) fluorescent light
C) incandescent light
D) steam turbine
Energy Efficiency
The measure of how effectively energy is used to perform a function or task, with higher efficiency leading to less energy waste.
Steam Turbine
A mechanical device that converts thermal energy from steam into mechanical energy, used in electricity generation and various industrial applications.
Fluorescent Light
A type of lighting that uses electricity to excite mercury vapor, which in turn produces short-wave ultraviolet light causing a phosphor coating on the inside of the bulb to glow.
- Familiarize oneself with the spectrum of heating methods and their effectiveness in energy utilization.
Verified Answer
ZK
Zybrea KnightJul 15, 2024
Final Answer :
D
Explanation :
Steam turbines have the highest energy efficiency among the given choices, with some reaching up to 50-60% efficiency. In comparison, human bodies have an efficiency of around 25%, fluorescent lights have an efficiency of around 25-35%, and incandescent lights have an efficiency of only around 5%.
Learning Objectives
- Familiarize oneself with the spectrum of heating methods and their effectiveness in energy utilization.