Which of the following heating element do you prefer to use where aesthetic features are not seeked such as factory, workshop, storage areas? Your answer: hand written plz O Plate heaters O Panel heaters O Pipe heaters Sliced heaters

Q: Let us use a heat pump to cook dinner! You set up a heat pump that has 40 % of its theoretical…

A:

Q: One of the foundations of thermodynamics is the "Conservation of Mass." O True O False

A: False, Conservation of energy is fundamental of thermodynamics not the conservation of mass

Q: How many points of view are there when studying thermodynamic systems? O4 3 O2 0 1

A: Solution:-Given thatHow many points of view are there when studying thermodynamic systems?

Q: What are the limitations of second law of thermodynamics?

A: The second law of thermodynamics states that it is impossible for the self-acting machine to…

Q: Can improved engineering and materials be employed in heat engines to reduce heat transfer into the…

A: Heat engine works in a cycle. Second law of thermodynamics implies that no system can entirely…

Q: What is the internal energy of a thermodynamic system?

A: Internal energy is the energy possessed by the molecules of matter. This energy is mainly due to the…

Q: In order to protect the wiring on an aircraft from overheating and catching fire if overloaded, two…

A: The two possible methods of protection for aircraft wiring are fuse circuit breaker.

Q: If we had a system on which 10 J of work is done and the internal energy change of the system is 3.5…

A: Given: The work done on the system is 10 J. The change in internal energy is 3.5 J.

Q: The maximum amount of work that can be done by a heat engine is

A: Maximum amount of work that can be done by a heat engine is amount of work done by a reversible…

Q: What is the difference between a refrigerator and an air conditioner?

A:

Q: Give three applications of thermodynamics in daily life.

A: Applications of thermodynamics in real life is : Different types of vehicles such as planes, trucks…

Q: An automobile engine has an the heat rejected by the engine. efficiency of 20% and produces 6000 J…

A: Given value--- efficiency = 20 percent.  Work = 6000 J. We need to find--- Find the heat rejected…

Q: State Zeroth law of thermodynamics.

A: Statement of Zeroth law : Two systems A and B which are seperately in thermal equilibrium with a…

Q: What types of refrigeration units are used to chill water for air-conditioning purposes?

A: This type of refrigeration system is used on the roof or back side of the building. Then the chilled…

Q: How much heat energy Q we need to heat mass m = 140 mg from room temperature T = 20 degrees Celcius…

A: Given: The mass m = 140 mg = 0.14 g Room temperature T = 20 oC Final temperature T' = 100 oC Note:…

Q: GIve one ecample of each type of ideal process in thermodynamics.

A: Solution

Q: How high would I have to jump to warm up the surface of the Earth upon landing?

A: It is necessary to determine the height from which a person must leap in order to warm the Earth's…

Q: What is the maximum possible coeffcient of performance of a heat pump that brings energy from…

A: The relation between temperature in kelvin and the temperature in Celsius is: Convert the…

Q: For a furnace to provide 50,000 Btu/hr of thermal energy to a living space, what should the rate of…

A:

Q: As the friction decrease inside the pipes, the heat energy in the pipe: O Increases O Decreases O…

A: What happens to the heat energy if the friction inside the pipe decreases

Q: Constenta The inside of an ideal retrigerator is at a temoerature T. whia the heating oois on the…

A: Given the refrigerator acts as a Carnot engine, for a Carnot engine, the efficiency is given by, Net…

Q: To build high speed railways, seamless rails must be used. As a mechanical engineer, how would you…

A: Solution

Q: State the first law of thermodynamics and explain how it is applied?

A:

Q: Discuss the concept of entropy.

A: Entropy is the measurements of degree of disorder ( or randomness ) in a system. Its unit is…

Q: What is the change in the internal energy of the system if 400 J of heat is added to the system and…

A: Heat added to system = 400 Joules  Work done by the system = 2300 Joules

Q: This is the thermodynamic parameter of the universe increases in value when energy movement takes…

A: There is a thermodynamic parameter that keeps on increasing whenever energy movement takes place.…

Q: A 1 mol of an ideal diatomic gas is contained in a system. What is the temperature change when an…

A: given: heat supplied Q = 72.5 J work applied on system W = 235 J number of moles n=1 mol

Q: Under what conditions is the first law of thermodynamics valid?

A: First law of thermodynamics states that, the energy can neither be created nor be destroyed, it can…