CWEA Maintenance Technologist Practice Test

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Study for the CWEA Maintenance Technologist Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the total energy used in watts/hour by a 150-watt lamp burning for 8 hours?

1,800 watts/hour
1,200 watts/hour
1,500 watts/hour
1,000 watts/hour

The correct answer is: 1,200 watts/hour

To determine the total energy consumed by the lamp, you can apply the formula that links power, time, and energy. The energy usage in watt-hours (Wh) is calculated by multiplying the power rating of the lamp (in watts) by the time it is in operation (in hours). In this case, the lamp has a power rating of 150 watts. If it burns for 8 hours, you would calculate the energy used as follows: Energy (in watt-hours) = Power (in watts) × Time (in hours) Energy = 150 watts × 8 hours = 1,200 watt-hours This calculation shows that the lamp uses a total of 1,200 watt-hours, which is equivalent to the answer choice selected. Thus, the correct response accurately reflects the energy consumption over the specified time period.