Quiz3anskey - 1. Which one of the following is true about...

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1. Which one of the following is true about energy conversion devices? A. Total Energy Input = Useful Energy Output B. Total Energy Input = Efficiency X Total Energy Output C. Total Energy Input = Energy Dissipated to the surroundings D. Total Energy Input = Total Energy Output Total energy = useful energy + waste energy Right Points Earned:1/1 Correct Answer: D Your Response: D Which one of the following is true about energy conversion devices? Total energy = useful energy + waste energy 2. Approximately what percentage of electricity does an incandescent light bulb convert into visible light? (1 point) A. 90% B. 5% C. 20% D. 40% Most of the electrical energy is lost in the form of heat in an incandescent light bulb. Refer to screen 2, 9 in lesson 3. Right Points Earned:1/1 Correct Answer: B Your Response: B 3. What is the form of useful energy output in the case of a car? A. Chemical B. Mechanical C. Radiation D. Thermal or Heat A car converts chemical energy from the burning of fuel into mechanical energy (motion of the car). Right Points Earned:1/1 Correct Answer: B Your Response: B 4. Energy cannot be destroyed or created—it can only change its form. (1 point)
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Quiz3anskey - 1. Which one of the following is true about...

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