If a 100 W machine runs for 20 hours per day, then estimate the total energy consumption per month in kilowatt hours. Assume 30 days are  there in a month.

Q: If a DC generator delivers 225 W to a load, what is the minimum mechanical power (in watts) needed…

A:

Q: MCQ: Power of machine when work done is 30 J in a time interval 5 seconds will be 120 W 125 W

A: Given data, Work done W = 30 J, Time interval, t=5 sec.

Q: 32 500 mA L 60 20V40° Q 120VLO 120 V

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Q: A 50-A, 230-V energy meter on full load test makes 61 revolutions in 37 sec. if the meter constant…

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Q: What is the difference between power and work

A: The basic difference between power and work are

Q: A generating station has an overall efficieney of 15% and 0-75 kg of coal is bumt per kWh by the…

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Q: Considering a no.00 AWG wire is 100 m. For no.00 AWG wire, it has a resistance of 0.078 per 1000ft.…

A: In this question AWG wire is given and it's resistance and current flowing through it given....We…

Q: A watthour meter with a primary watthour constant of 720 whr per revolution produces four pulses per…

A: For a watthour meter, its constant for 4-pulses is given as  We need to determine energy for…

Q: 1-19 Determine the cost of leaving a 10-W bulb on for one year if electricity costs $0.09 per…

A: Given :  A 10 w bulb is ON for a year  To find the cost of electricity

Q: What is the thermal efficiency of an energy conversion machine if it requires 1100 joules of energy…

A: Given Energy conversion machine requires 1100 joules of energy input and produces 920 joules of…

Q: Why have we become so addicted to electricity?

A: It is not correct to say that we are addicted to electricity. Rather if we look closely  it is our…

Q: Find the work done moving a charge 2 C having potential V = 24 Volts is: 96 J O 24 J 36 J O 48 J

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Q: If an energy meter disc makes 10 revolutions in 100 seconds when a load of 450W is connected to it,…

A: Given: E=2×105 Nmm2. Arc radius, R = 10 m Area, A=120 mm×20 mm y = 10 mm

Q: What do you call the rate at which a certain electrical device delivers electrical energy?   a.…

A: The rate of flow of elctrical energy is known as electrical power unit of electrical power is W if…

Q: Technician A says that voltage is the force developed by the attraction of the electrons to protons.…

A: The voltage also called the 'potential difference between the two points' which is developed by the…

Q: Assuming a rate of 3 cents per kwh,how much will I pay for the loss with 7657.8881 watts due to the…

A: The solution is given below

Q: A large generator produces 10,000 kW of power. How many horsepower is this equivalent to?

A: The formula for conversion from kW to hp P(hp)=P(kW)0.746 Where P(hp)= Power in horsepower P(kW)=…

Q: Find the power when 300 J of energy are expended in a time interval of 2 seconds.

A: Given:- Energy = 300J, Time = 2seconds.

Q: A heater is required to give 1000 cal/min on a 200V dc circuit. What length of wire is required for…

A: Given, P=1000 cal/minV=200 VR=3 Ω/m

Q: How do you measure power consumption and can you provide a overview of power consumption topic and…

A: Power can be calculated theoretically as the product of voltage and current and power factor of the…

Q: Find the multiplication factor for an analog wattmete with a full scale range of 200, if current…

A: Given: Voltage range= 300VCurrent range= 5A

Q: Calculate the power dissipated by a 2.5 MO resistor carrying 2.5 µA of current. NOTE: Round to two…

A:

Q: What is the thermal efficiency of an energy conversion machine if it requires 1210 joules of energy…

A: Efficiency given by  % n = useful heat energy/ input energy or required energy ×100

Q: How much energy will a 100 W table fan consume in 20 hours? Express the answer in terms of the unit…

A: An energy expenditure of 1 Wh represents 3600 joules.

Q: A machine is capable of a power output of 10 W ± 3 dB. What is the possible power fluctuation?

A: Given: Power output, P=10W±3dB

Q: A 700 MW power plant consumes coal containing 1.23x 10^14 Joules of thermal energy every day. What…

A: In this question we will find efficiency of system...

Q: 4. A 5kW (shaft power) DC motor has 200 W of electrical losses and 3 W of mechanical losses. Which…

A: The solution is given below

Q: If an energy meter disc makes 10 revolutions in 100 seconds when a load of 450W is connected to it,…

A: We need to find out the meter constant .

Q: What is the thermal efficiency of an energy conversion machine if it requires 1140 joules of energy…

A: Given parameter:- Input energy=1140 jules output or produce energy=840 jules   Thermal efficiency is…

Q: It would take one machine 4 hours to complete a production. The same task another machine can do in…

A: Let Machine 1 completes the production in 4 hours alone and Machine 2 completes the production in 2…

Q: For a 20 A, 230 V energy meter, the number of revolutions per KWh is 480. If upon test at full load,…

A: In this question we will find power consumed, energy consumed ....And error in measurement....

Q: Don't use ai to answer I will report your answer Solve it Asap with explanation and calculation

A: Step 1:First we will find current through each resistor :We have been given circuit…

Q: How much energy does a 4.5 Hp motor deliver in 1 hours. Answer should be in MJ

A: Given information: The power rating of the motor is P=4.5 Hp The time duration is T=1 hour=3600 s

Q: What have you observed in the behavior of the elements? Did the lamps light up? Explain.

A: For the given series connection of Bulb, the behavior of the elements needs to be analyzed.

Q: If a DC generator delivers 185 W to a load, what is the minimum mechanical power (in watts) needed…

A: We need to find out input power for given effeciency and output Power

Q: a direct current generator delivers 180 W to a load, what is the smallest amount of horsepower…

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Q: advantages and 3

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Q: Determine the electrical power the motor draws.  *I've attached a graph which you can use, but also…

A: The electrical machines can be either generator or motor. They are used for the energy conversion…

Q: 7. An electric drier requires 360W and draws 3.25A. Find its operating voltage.

A: According to guidelines we need to solve only the first question. According to the question we have…

Q: own,Giveone  application of static electricity and explain it in 2-3 sentences only.

A: Static electricity has several applications, in the real world. One significant use is in printers…

Q: 1. What is the importance of Electrical energy? 2. What is a Electrical efficiency and explain heat…

A: Electrical energy is a vital discovery of all time because it has lots of importance, Without it,…

Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.