What is meant by efficiency?

Q: A) A DC motor driven pump running at 100 RPM delivers 30 L/sec of water at 40C (d = 992.3 kg/m3 )…

A: Given data: N1=100 RPMQ=30 L/s=30×10-3 m3/sρ=992.3 kg/m3η=60%H1=27 mH2=36 m Need to determine the…

Q: A closed system executes a series of processes for Wn = 80 BTU, U1 = 40 BTU and U2 = 5 BTU are given…

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Q: What are the possible energy transfer systems of a purely mechanical machine?

A: A purely mechanical machine is a simple mechanical device such as scissor, manual punching machine,…

Q: Why is humans are very dependent on the used of fuels to produce power?

A: Alternative fuels reduce toxic exhaust emissions (such as carbon dioxide, carbon monoxide,…

Q: What is the internal energy of the system and how can it be changed?

A: Explanation  Internal Energy : Internal energy of the system is the total energy contained within…

Q: What is a steady-flow process?

A: A steady flow process is a process that is defined for flow problems in an open system. In a steady…

Q: What is Coefficient of Performance (COP)? Also differentiate between COP and Efficiency?

A: Coefficient of Performance is ratio of desired effect to the input work. It is also  called as…

Q: What is a heat pump and how does it work?

A: Note- I only give one solution at one time for other question you will upload again.

Q: A simple saturated refrigeration R-12 system operates at an evaporating temperature of -11  °C and a…

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Q: What is an adiabatic process?

A: ADIABATIC PROCESS An adiabatic process is a heat transfer-free process from the system or from the…

Q: The torque (in N-m) exerted on the crank shaft of a two stroke engine can be described as T = 10000…

A: Given data: The speed of the engine is N = 100 rpm. The torque (in N-m) exerted on the crank shaft…

Q: Explain the wind turbine its part and function of each parts, how it will convert energy?

A: I have mentioned the part names and pics with the help of Power point (for the better understanding…

Q: 1. Is a temperature difference necessary to operate a heat engine? State why or why not. 2.…

A: Hi! Thank you for the question As per the honour code, We’ll answer the first question since the…

Q: Define the Energy can cross the boundaries of a closed system in the form of heat and work?

A: Answer :- There are three types of Systems Open system Closed system Isolated system

Q: What are primary sources and why are they important

A: Academics require this knowledge to comprehend and teach the intricacies of those intersections,…

Q: A steam engine has 15% brake thermal efficiency and consumes 800 kg/hr steam. The enthalpy of steam…

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Q: a simple experiment that demonstrates that work is directly proportional to the force  applied.

A: We can take the example of the strring work to demonstrate the phenomenon.

Q: Define Renewable energies such as wind are called “green energy” since they emit no pollutants or…

A: Renewable energy: Renewable energy is the energy produced from renewable sources such as Sun, Wind,…

Q: A projector lamp consumes 102.36 kWhr of energy working through out a day in a year. what will be…

A: Given data: The lamp consumes throughout the year is P=102.36 kWhr

Q: A. The capacity of hot bodies to produce work is? Kinetic Energy Heat Potential Energy Internal…

A: In thermal science, the important properties of the system are: Temperature  Enthalpy Entropy

Q: In your own words, define efficiency as it applies to a device designed to perform an energy…

A: The energy can be transformed or converted from one from to another form. The complete conversion of…

Q: In a work energy diagram, which of the following must be true? (i) The number of upward (positive)…

A: Statement 1: The number of upward (positive) bars must equal the number of downward (negative) bars…

Q: Steam enters a turbine with an enthalpy of 1292 Btu/lbm and leaves with an enthalpy of 1098 Btu/lbm.…

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Q: Which is a measure of the deviation of actual processes from the corresponding idealized ones.

A: For steady flow devices like a turbine, compressor, and pump there is heat interaction with…

Q: What is the difference between an open control volume system and a closed isolated system? Please…

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Q: Explain the TEMPERATURE AND THE ZEROTH LAW OF THERMODYNAMICS?

A: Temperature is defined as the measure of hotness or coldness. The average kinetic energy of the…

Q: Identify valid processes as those that satisfy both the first and second laws of thermodynamics.

A: The Ist law places no restriction on the direction of a process, and mere satisfaction of it will…

Q: → What is the difference between an open system and an isolated system?

A: It is required to differentiate between open system and isolated system

Q: How can we ensure the safety of the workers, the assets and the environment in an industrial…

A: Understand the risks. Once you know the particular hazards of your job or workplace, you can take…

Q: Why solar energy is called sustainable source of energy? Explain why it is considered a clean energy…

A: Sustainable energy is defined as the energy source that is available to meets our today’s demand and…

Q: How to define reversible process and irreversible processes.

A: A thermodynamic process in which the system, as well as the surroundings, can quickly restore to the…

Q: What does the equation of virtual work represent?

A: Work done by F during displacement ds dU=Fdscosθ

Q: How can you define the theory of control volume?

A: CONTROL VOLUME:  control volume is the thermodynamic analysis process .

Q: Suppose a sheaf baked donuts. Explain into details why this process is irreversible?

A: Because cooking/cooking of food items is a process in which chemical reaction takes place and that…

Q: Define thermal energy reservoir?

A: Thermal energy reservoir⇒ Thermal energy reservoir is defined as a thermodynamic system containing…

Q: Is creating energy and electricity through nuclear power plants, a sustainable energy source, in…

A: Nuclear power plants  produce heat during nuclear fission to heat water. It requires uranium as it's…

Q: t is the difference between the actual mechanical advantage and the theoretical mechanical advantage…

A: To differentiate between actual mechanical advantage and ideal mechanical advantage.

Q: What is the Conservation of Energy?

A: Energythe capacity for doing work is called Energy . It may exist in potential,kinetic, thermal,…

Q: Explain the Conservation of energy principle for the human body?

A: Given Data⇒human bodyProblem definition⇒Problem says Explain the Conservation of energy principle…