EGEE – Exam 1 Study – Energy and Environmental Engineering
– study material
Which of the following is a unit of power? - ANS ✔✔BTU/h
One calorie is defined as the amount of energy that is required to raised the
temperature of ________. - ANS ✔✔1 g of water by 1 C
A 100 watt incandescent light bulb is operated for 120 hours, and a 15 watt
fluorescent light bulb is operated for the same period of time. At 10 cents per
kWh, what is the cost savings of the fluorescent bulb? - ANS ✔✔Energy = power
* time of usage
incand. 1000W * 120h = 12000 Wh = 12kWh
Fluo. = 15W *120h = 1800Wh
1.02
A BTU has more energy than a calorie - ANS ✔✔true
An energy source is nonrenewable if ______. - ANS ✔✔if the source cannot be
regenerated in a reasonable time period.
The form of energy store in gasoline is - ANS ✔✔Chemical
Nuclear fusion is a renewable source of energy. - ANS ✔✔True
, A refrigerator rated at 494 Watts running 13 h everyday is replaced by a new
refrigerator rated at 221 Watts and runs 8 h per day. What is the energy saving in
kWh for a week? - ANS ✔✔32.6 is the energy saving for one week.
494* 13= 6422 *7 =44954
221* 8 = 1768 * 7= 12,376
44954-12376=32,578
Energy can be converted to which of the following? - ANS ✔✔Work, Heat and
Radiation
A refrigerator rated at 412 Watts running 7 h everyday. What is the energy
consumption in kWh for a week? - ANS ✔✔20.2
20,188
One BTU of energy is enough to what what? - ANS ✔✔Heat one pound of water
by one degree Fahrenheit
If Peter expends 1,500 calories running a mile in one hour and Samantha burns
1,500 calories riding a bike in forty-five minutes. Which one of the two spent the
greatest amount of energy? - ANS ✔✔Both Samatha and Peter will expend the
same amount of energy
Units of energy when divided by time of usage give units of ___. - ANS
✔✔Power
– study material
Which of the following is a unit of power? - ANS ✔✔BTU/h
One calorie is defined as the amount of energy that is required to raised the
temperature of ________. - ANS ✔✔1 g of water by 1 C
A 100 watt incandescent light bulb is operated for 120 hours, and a 15 watt
fluorescent light bulb is operated for the same period of time. At 10 cents per
kWh, what is the cost savings of the fluorescent bulb? - ANS ✔✔Energy = power
* time of usage
incand. 1000W * 120h = 12000 Wh = 12kWh
Fluo. = 15W *120h = 1800Wh
1.02
A BTU has more energy than a calorie - ANS ✔✔true
An energy source is nonrenewable if ______. - ANS ✔✔if the source cannot be
regenerated in a reasonable time period.
The form of energy store in gasoline is - ANS ✔✔Chemical
Nuclear fusion is a renewable source of energy. - ANS ✔✔True
, A refrigerator rated at 494 Watts running 13 h everyday is replaced by a new
refrigerator rated at 221 Watts and runs 8 h per day. What is the energy saving in
kWh for a week? - ANS ✔✔32.6 is the energy saving for one week.
494* 13= 6422 *7 =44954
221* 8 = 1768 * 7= 12,376
44954-12376=32,578
Energy can be converted to which of the following? - ANS ✔✔Work, Heat and
Radiation
A refrigerator rated at 412 Watts running 7 h everyday. What is the energy
consumption in kWh for a week? - ANS ✔✔20.2
20,188
One BTU of energy is enough to what what? - ANS ✔✔Heat one pound of water
by one degree Fahrenheit
If Peter expends 1,500 calories running a mile in one hour and Samantha burns
1,500 calories riding a bike in forty-five minutes. Which one of the two spent the
greatest amount of energy? - ANS ✔✔Both Samatha and Peter will expend the
same amount of energy
Units of energy when divided by time of usage give units of ___. - ANS
✔✔Power
