A 60-hp electric motor (a motor that delivers 60 hp of shaft power at full load) that has an efficiency of 89.0 percent is worn out and is to be replaced by a 93.2 percent efficient high-efficiency . The motor operates 3500 hours a year at full load. Taking the unit cost of electricity to be $0.08/kWh, determine the amount of energy and money saved as a result of installing the high-efficiency motor instead of the standard motor. Also, determine the simple payback period if the purchase prices of the standard and high-efficiency motors are $4520 and $5160, respectively.

Q: ΔΚΕ ARKE ΔΡΕ A hockey puck slides across the YES / NO YES / NO YES / NO ice and comes to a stop YES…

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Q: Motor A Initial Investment 1,250,000 1,300,000 Horse Power 100Hp 100Hp Efficiency 74% 92% Useful…

A: Given: 1Hp=0.7457 kW

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Q: How long will it take a 2100 W motor to lift a 300 kg piano to a six story window locate 16.0 m a…

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Q: Calculate the power dissipated in R5. R1-6n www R2-30 R3-6 n R4=2 n Rs =6n E= 19.8 V Rs =4n ww

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Q: Which energy diagram represents the energies of a 50 kg object as it falls from the top of Niagara…

A: A)Given-The mass of the object, the height of Niagra Falls, Solution:The kinetic energy at the top…

Q: Suppose that an engine has 28% overall efficiency. Find how much work is done in a time interval in…

A: The efficiency is defined as the ratio of work done to the input heat.  η = WQin Where, W is the…

Q: Explain the difference between energy and power. If a household has an average annual energy…

A: Difference between energy and power? if E=8500 Kwh , find P= ? how power consumptions varies during…

Q: Given the equation x=18t-38t2+17t3 m=16mg,find work done from t=0s to t=3 s

A:

Q: A 3010kg speedboat is traveling on a lake (with no current) and shuts off its engine. The boat…

A: Given information: The mass of the speedboat, m=3010 kg The force applied on the boat, F=526 N…

Q: What is the useful energy output when a 60 W light bulb is on for 2 hours? Recall, traditional light…

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Q: An electric refrigerator rated 400 W operates 8 hour/day. What is the cost of the energy to operate…

A: The power of the refrigerator is 400W. The total time operated by the refrigerator is,

Q: How much work can a 120 W motor do in 3.0 seconds? (120 W is the power of the motor.) Your answer: O…

A:

Q: A family in Charlotte wants to drive to a campsite next to Mt. Mitchell. Their trip will take them…

A: (1) Energy left is Tesla’s battery when it gets to campsite ETLeft=ET-Ereq=100 kWh-79 kWh=21 kWh

Q: C7 21.) If a hair dryer is rated at 1300 W, how much energy does it require in 6 minutes?…

A: Power=Work/time Work=Power X time

Q: certain location , the solar power per unit area reaching Earth’s surface is 200 W/m square ,…

A: GivenSolar power per unit area reaching Earth’s surfaceP=200 W/m2Average power requirement in your…

Q: It is required to select a V-belt drive to connect a 29 kW, 1440 rpm motor to a compressor running…

A: Given that,Power P=29 kWSpeed, N=480 rpmCompressor speed, n=1440 rpmWorking time=15 hours per…

Q: Fariya, a 53 kg female was instructed by the trainer to perform exercise on cycle ergometer with a…

A: Given data: The mass of the female, m=53 kg. The resistance of the cycle ergometer, M=2 kg. The…

Q: Calculate the time taken by a 60 pulb to consume 3000 J of energy.

A: power = energy consumedtime taken60 W=3000time takenso, time taken =300060=50  seconds

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A: Given Annual cooling load        = 120,000 kWh Electricity cost per unit    = RM 0.10 / kWh Air…

Q: An average-sized home refrigeration unit has a 1/19-hp fan motor for blowing air over the inside…

A: Given:Fan motor power of refrigeration unit=119 hpFan motor power of blowing air unit=125 hp

Q: b) A modern windmill generates about 1 megawatt of energy, let us say that future ones will generate…

A: Disclaimer: “Since you have asked posted a question with multiple sub-parts, we will solve the first…

Q: Lightbulb A was found out to give 30.0W of power, producing the same brightness as lightbulb B…

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Q: The human brain consumes about 22 W of power under normal conditions, though more power may be…

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Q: energy per minute. Find the power supplied by the engine in kilowatt. ple 8 An engine supplies 6000…

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Q: What is the available energy content, in joules, of a battery that operates a 2.00-W electric clock…

A: Given data: Power, P=2.00 W Time taken, t=540 days

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A: Given: Power of the dryer P= 3000 W  time to use dryer = 1 hour  Total useful energy to dry the…

Q: How much energy does a 100-W light bulb use in 80.0 hours? O 13 kWh O 800 kWh O 8.0 kWh 0.80 kWh

A: Given data:  Power (P) = 100 W Time (t) = 80.0 h Required: Energy (E)

Q: Matthew (220lbs) has a Monarch cycle ergometer that he rides every morning.  He expends 300 Kcals…

A: Given, Mass of Matthew, m=220 lbs=99.8 kg Energy spent, E=300 kcals=1.25×106J Time,t=30 minute=1800…

Q: A sump pump turning at 1600 rpm provides a discharge of 9 gpm against a head of 18 ft. Compute the…

A: Given: From the given data, h=18 ft N=1600 rpm Q=p gpm

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.