A duct heater has a nameplate rating of 6.32 KW @ 250 volts. If the duct heater is
operated at 230 volts and is used for eight hours per day, it will cost $___ to operate for
one year (365 days). The power cost is 14.7 cents per kW-hour. - answer$2,296.11
A baseball field has 800 luminaires to light the playing field. Each luminaire contains a
1500-watt multivapor lamp. For an evening game, the field lights are turned ON at 2
p.m. and OFF at 1 a.m. the following morning. What is the energy cost to operate the
field lighting for this game? Electricity costs $0.12 per kW-hr. - answer$1,584
The initial cost of metal halide luminaires is ___ than that of quartz luminaires. - answer
greater
How much will it cost to install, operate, and maintain one luminaire with a 100-watt
metal halide lamp for 12.5 hours per day for 10 years (365 days per year)? The initial
cost of the new luminaire (including installation labor) is $245.00. Electricity costs $0.14
per kW-hr. The maintenance costs (including labor) to replace a ballast and three lamps
during the 10-year period is $375. $___ for electricity used+ $___ for initial luminaire
cost+ $___ for maintenance - answer$1258.75
An air conditioner pulls 23 amps at 240 volts. The electric utility rate is 9.1 cents per
kW-hr. The air conditioner "runs" for 8.5 hours each day. The cost to operate the air
conditioner for 30 days is ___. - answer$128.09
If a 95-watt lamp operates for 11 hours, the utility will bill for ___ kWh. - answer1.045
What is the monthly energy cost to operate a 200-watt high-pressure sodium lamp?
Electricity costs $0.11 per kW-hr and the lamp will be ON for 12 hours per day. There
are 30 days in a billing month. - answer$7.92
macaroni and cheese - answerAlso "Mac and cheese." Macaroni pasta with cheese
sauce.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller julianah420. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R263,80. You're not tied to anything after your purchase.