Bissoy.com
Doctors Medicines MCQs Q&A

Work is considered to be a superior form of energy as compared to heat energy, because,

Work is considered to be a superior form of energy as compared to heat energy, because, Correct Answer While work can be fully converted into heat, heat cannot be fully converted into work

Explanation:

  • Based on the thermodynamic concepts, an energy source can be called as high - grade or low - grade, depending on the ease with which it can be converted into other forms.
  • Thus electrical energy (or work) is called a high - grade energy, as it is very easy to convert almost all of it into other energy forms such as thermal energy (say by using an electrical heater).
  • Whereas, it is not possible to convert thermal energy (or heat) completely into electrical energy (typical efficiencies of thermal power plants are around 30 percent), hence thermal energy is called a low - grade energy. 

Related Questions

Which of the following statements are true? 1) Heat and work are completely interchangeable forms of energy 2) Heat and work are not completely interchangeable forms of energy 3) Work can be converted completely into heat 4) Heat can be converted completely into work
A Carnot heat engine receives heat at 750 K and rejects the waste heat to the environment at 300 K. The net work output of the heat engine is used to drive a Carnot refrigerator, whose COP is 6.14. If the heat removal rate from the refrigerated space is 6.6 kW, determine the rate of heat supply to the heat engine?
Given below are two quantities named 1 and 2. Based on the given information, you have to determine the relationship between the two quantities. You should use the given data and your knowledge of Mathematics to choose between the possible answers. Quantity 1: P and Q can do a work in 6 days and Q and R can do a work in 60/7 days and P and R can do a work in 20/3 days. If Q and R work for first 2 days and left the work. Find the total time taken by P to complete the remaining work. Quantity 2: A and B can do a work in 8/3 days, B and C can do the same work in 3 days and A and C can do the same work in 24/5 days. In what time C alone can complete the work?
Consider the following statements for comparison of heat and work: 1. Both heat and work are transient phenomena. 2. Both heat and work are boundary pehnomena. 3. Both heat and work are path functions and inexact differentials. Which of the above statements are correct?
Men and women may have different reproductive strategies but neither can be considered inferior or superior to the other, any more than a bird’s wings can be considered superior or inferior to a fish’s fins. What type of argument it is ?
Which of the following statements are true regarding heat? Heat is a form of energy. Heat can be reflected by the mirror. Heat is electromagnetic radiation. Heat cannot pass through a vacuum. Select the correct answer from the codes given:
You are given a question and two statements. Idientify which of the statements is/are sufficient to answer the question. Question: In a city, some people travel to work by bus, some people travel to work by train, some people travel to work by both bus and train, and some travel to work neither by bus, nor by train. The number of people who travel to work by both bus and train is how much less than the number of people who travel to work by neither? Statements: (1) In the city, there are 384 people who travel to work by bus. (2) In the city, there are 672 people who travel to work by train,
A, B, and C can do a piece of work in 20 days, 30 days, and 15 days respectively. They start the work together but after 3 days they leave the work and the work is stopped for the next 15 days. After that D, E and F joined the work and did the work alternately and D started the remaining work. If D’s efficiency is twice A, E’s efficiency is half of B and F is equally efficient as C. So find in how many days D, E, and F complete the remaining work.
In the following question, two statements are numbered as A and B. On solving these statements, we get quantities A and B respectively. Solve both quantities and choose the correct option. Quantity A: A can do a piece of work in 10 days and B can do the same work in 15 days. They start working together and after 4 days, A left the work. Find in how many days the total work will be completed. Quantity B: P can do a piece of work in 15 days and Q can do the same work in 25 days. They start working together and after 5 days, Q left the work. Find in how many days the remaining work will gets completed.
A and B together can do a piece of work in 10 days. If A can do the work in 15 days, find in how many days that B alone can do the same work. Given below are the steps involved in solving the above problem. Arrange them in sequential order. (A) One day’s work of B is 1/10 - 1/15 (B) One day’s work of A and B is 1/10 and one day’s work of A is 1/15 (C) B alone can do the work in 30 days (D) One day’s work of B is 1/30