How Is Efficiency Related To Power? Power is the rate at which energy is being transferred. … Since work is by definition the transfer of energy (in or out of a system), power is also equal to the work divided by the time. Efficiency tells you how efficient something is and gives a number between
Can Coefficient Of Performance Of A Refrigerator Be Greater Than Unity? The coefficient of performance (COP) of refrigeration is always more than 1. Hence option (a) is correct. COP is the ratio of heat extracted from the refrigerator to the work done on the refrigerant. Thus it is but obvious that the value of COP
At What Load Will Efficiency Be Maximum? The transformer on which load is variable (like distribution transformer) is designed to give maximum efficiency at about 75% of full load. And if it is continuously operated near the full load (like power transformers), then it is designed to give maximum efficiency at or near the full
How Can You Increase The Efficiency Of A Machine? For a lever, you can increase the machine’s efficiency by reducing the friction. What makes a machine efficient? The efficiency of a machine concerns how much energy is lost to friction and heat during its operation. Since work is the change in kinetic energy, the efficiency
Will A New Furnace Save Money? Many ask whether a new furnace will lower your heating bill and the easy answer is yes. Older furnaces usually are around 80% efficient. … With an 80% efficient furnace, think of it this way, for every 100 dollars that you spend on gas/propane, 20 dollars is lost. Will
How Does Technology Save Our Time? “Mobile devices alone are saving users around an hour each week by making navigation more efficient and giving traffic updates and public transport times.” An hour a week adds up very quickly in the course of the year, and suddenly this technology alone has saved you about two days
What Does Process Efficiency Mean? The definition of process efficiency is essentially “the amount of effort or input required to produce your business’s product.” For instance, if it takes 300 workers to make a single pack of gum, your process efficiency is abysmal. And you should get out of the gum manufacturing business. Why is
Will This Design Be Cost Effective? A building design is deemed to be cost-effective if it results in benefits equal to those of alternative designs and has a lower whole life cost, or total cost of ownership. … The challenge is often how to determine the true costs and the true benefits of alternative decisions.
Why Carnot Cycle Has Highest Efficiency? This means that the Carnot cycle is an idealization, since no real engine processes are reversible and all real physical processes involve some increase in entropy. The conceptual value of the Carnot cycle is that it establishes the maximum possible efficiency for an engine cycle operating between TH and
How Is Efficiency Most Often Expressed? Efficiency is often measured as the ratio of useful output to total input, which can be expressed with the mathematical formula r=P/C, where P is the amount of useful output (“product”) produced per the amount C (“cost”) of resources consumed. What is the unit of efficiency? Efficiency has no