Q True or False1. PMM1 states that: there can be no machine which would continuously supplymechanical work without some form of energy disappearing simultaneously.2. The filling of a tank is an example of unsteady flow process.3. For steam nozzle the change in potential energy is zero4. In case of boiler the change in kinetic energy is zero.5. For steady flow only interaction between system surroundings are work and heat.6. Superheated steam behaves like a gas and therefore, it follows gas laws7. Extensive properties do not depend on the mass of the system.8. The change of internal energy for an isolated system is equal to heat and work.9. With the use of centrifugal pump, the heat transfer is maximum.10. For the flow in reciprocating compressor, the change in the kinetic energy ismaximum

Answered: Image /qna-images/answer/ebd54b3e-d713-4503-84ed-c6cefba7a624.jpg

1. PMM1 states that: there can be no machine which would continuously supply mechanical work without some form of energy disappearing simultaneously. 2. The filling of a tank is an example of unsteady flow process. 3. For steam nozzle the change in potential energy is zero

1. PMM1 states that: there can be no machine which would continuously supply mechanical work without some form of energy disappearing simultaneously. 2. The filling of a tank is an example of unsteady flow process. 3. For steam nozzle the change in potential energy is zero

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 29RQ: If 3000 ft3 of air is crossing an evaporator coil and iscooled from 75F to 55F, what would be the...

See similar textbooks

Related questions

Q: (a) mass flow rate of refrigerant in kg/s (b) mass flow rate of refrigerant per ton of refrigeration…

Q: The figure below shows a turbine-driven pump that provides water to a mixing chamber located dz = 25…

A: We have given

Q: Why is work done a scalar quantity?

A: Physical work is obtained as dot product of force and displacement. Since force and displacement are…

Q: 02: A// For a centrifugal compressor. Prove that: C-C, Cri - Cr22 Cpiz- Coun Power developed on…

Q: An air compressor piston displacement is 6,308 cm^3/min when operates at 964 rpm and volumetric…

Q: The figure below shows a turbine-driven pump that provides water to a mixing chamber located dz = 45…

Q: Explain why work is not a property of the system.

A: In Thermodynamics, work is defined as a boundary phenomenon through which energy is interacted…

Q: Explain the Under steady operation, shaft work and electrical work are the only forms of work a…

A: Steady flow process: A process during which a fluid flows through a control volume steadily. Under…

Q: Q2A: A large fraction of the thermal energy generated in the engine of the car is rejected to the…

A: Before analyse , let use compare the difference between open system and close system . In open…

Q: The power requirement of a 3-stage compressor (in kW, two decimal places) in order to supply air at…

A: To Find : The actual power requirement. Given : The temperature is T=20°C. The discharge is Q=250…

Q: The figure below shows a turbine-driven pump that provides water to a mixing chamber located dz = 5…

A: Given data Mass flow rate=50kg/s dz=5m

Q: A closed stationary system consists of 2 kg mass. During a certain process, 20 kJ of work is done on…

A: Given Data m=2 kg W=-20 kJ ∆u=40 kJ/kg

Q: Probleml In Control Volume in the given Fig 1. (Fig 1) 1- Point at the part considered imaginary…

A: as per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

Q: Pls.answer thank you! Water enters the cooling tower at 55 °C and leaves at 30 °C while the heat…

Q: A ventilation system with two branches: the branch A requires to have VP of 5 "w.g. and Q of 4.8…

A: VP1=5" w.g. Q1=4.8 scfm VP2=4.2" w.g. Q2=4.5 scfm

Q: 4. Assume 8 Ib/sec of fluid enter a steady state, steady flow system with p1 = 100 psia, density 1=…

Q: A thermodynamical system performs work and at the same time exchanges energy to the outside…

A: Given Work done = 9.794 J Internal energy = 8.569 J Find Heat exchange

Q: a SSSF control volume has three inflow streams, where each inflow stream has a mass-flow-rate,…

Q: If a pump discharges 90 GPM of water whose specific weight is 61.5 lb f /ft 3 (g = 31.95 ft/s 2 ),…

Q: It states that all kind of energy are not of the same quality.________________________

A: Given: It states that all kind of energy are not of the same quality

Q: The figure below shows a turbine-driven pump that provides water to a mixing chamber located dz⁢= 5…

Q: Based on thermodynamics of a process, explain intermediary energy. Mention the three characteristic…

A: Intermediary energy can also be said internal energy. In thermodynamics, when a system goes in any…

Q: The rates of energy that can be transferred from one system to another is due to difference in the

A: 1) The rates of energy that can be transferred from one system to another is due to difference in…

Q: A pump forces 1 m3/min of water horizontally from an open well to a closed tank where the pressure…

A: As per given question Given data Velocity v1=10m/s Pressure =0.9mpa Pump force= 1m^3/min We have…

Q: In an undisturbed airstream, where pressure is 14.7 lb/in² and temperature is 59F, the velocity is…

Q: 5. Consider a propeller based aircraft with a supercharger. It operates with a revo of 2700 rpm, has…

A: Assume the given process is adiabatic therefore, apply the relation as follows.

Q: In an undisturbed airstream, where pressure is 14.7 lb/in² and temperature is 59F, the velocity is…

Q: "Heat and work are not mutually convertable in the system

A: Given: To define: Heat and work are not mutually convertible in the system it states: And the type…

Q: Water is contained in a piston/cylinder assembly. The volume of the water is 4 L when the piston is…

Q: A 10 lbm object is acted upon by a 4.4 lbf force. What acceleration in ft/s does the object possess?

Q: What is the minimum diameter of a turbine blade if: - 1000 kW power must be generated - The KE of…

Q: The figure below shows a turbine-driven pump that provides water to a mixing chamber located dz = 25…

A: Given data Mass flow rate of water in the pump=80kg/s Heat loss in pump=2KW dz=25 m

Q: Construct a mass and energy flow diagram for the following systems. a. A cube sliding across a…

Q: Discuss the reverse process is impossible.

A: A reverse process is said to be a process in which it does not follow the same path when it is…

Q: 13. An air turbine produces a shaft work of 35 kJ/kg. The conditions of the air entering and leaving…

Q: . A reciprocating compressor draws in 500 cubic feet per minute of air whose density is 0.079…

Q: A closed system loses energy by heat transfer at the rate of 10kJ/s. Write the energy balance for…

A: A closed system loses energy by heat transfer at the rate of 10kJ/s. Write the energy balance for…

Q: The work associated with a moving boundary is called ______________.

A: The work associated with moving boundary is associated with the expansion and compression of a fluid…

Q: The Figure shows a solar collector panel embedded in a roof. The panel, which has a surface area of…

A: GIVEN: surface area: A= 24 ft2 Q= 200 Btu/h per ft2 T1=90°FT2=120°F SOLUTION: FINDIND TOTAL HEAT…

Q: 1.A pressure cooker operates by cooking food at a higher pressure and temperature than is possible…

A: To obtain the mass of the small weight, we will just equate the force applied by the steam on the…

Q: Energy flow is a one-directional process. True or False

A: It is required to evaluate given statement

Q: UNIT TASK Create a system that shows the third law of thermodynamics and how it relates to the…

Q: 1. Discuss the concepts of Archimedes principle. 2. Discuss the three forms of energy: Potential…

A: given; (a) discuss the principal of archimedes principal. (b) discuss the three form of energy…

Q: Calculate the work done when 1 lb mol of water evaporates completely at 212°F in the following…

A: Introduction: Flow work denotes the flow of energy and mass over the system's boundary. Non-flow…

Q: 1- A centrifugal fan supplies 4.7m3/s of air at a total static pressure of 325Pa. If the fan…

A: Given:Volume per second of air, Q=4.7m3/s.Total static pressure, P=325Pa.fan efficiency, η=60%.speed…

Q: A duct of constant diameter with fan and some resistance heaters are the basic scheme of the hair…

Concept explainers

Forms of Energy

Energy is described as the capability to accomplish a task, like the ability to push a block by applying force on it. It is a quantitative property that is used to accomplish work on an object.

Question

Q True or False
1. PMM1 states that: there can be no machine which would continuously supply
mechanical work without some form of energy disappearing simultaneously.
2. The filling of a tank is an example of unsteady flow process.
3. For steam nozzle the change in potential energy is zero
4. In case of boiler the change in kinetic energy is zero.
5. For steady flow only interaction between system surroundings are work and heat.
6. Superheated steam behaves like a gas and therefore, it follows gas laws
7. Extensive properties do not depend on the mass of the system.
8. The change of internal energy for an isolated system is equal to heat and work.
9. With the use of centrifugal pump, the heat transfer is maximum.
10. For the flow in reciprocating compressor, the change in the kinetic energy is
maximum

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

In what four states does matter exist? Cite examples of each.
If 3000 ft3 of air is crossing an evaporator coil and iscooled from 75F to 55F, what would be the volume of air, in ft3, exiting the evaporator coil?
true or false For any non cyclic process in the closed system, relationship between heat and work shall be dQ = dU + dW
In an undisturbed airstream, where pressure is 14.7 lb/in² and temperature is 59F, the velocity is 520 ft/s . What is the local pressure if the velocity is equivalent to 600 ft/s?
A vertical piston-cylinder assembly contains 0.5 kg of water. Initially, the piston is resting against the stops when the water pressure and temperature are 1.00 bar and 100°C, respectively. The piston has a mass of 50 kg and face area of 0.01 m2; local atmospheric pressure is 1.01 bar; local gravitational acceleration is 9.81 m/s2 (5) What water pressure would be required to lift the piston from the stops? (3) Thinking about water as the system, is the system best described as open, closed, or isolated? Why? (3) Are changes in kinetic and potential energy negligible for the system in this case? Why? (5) How much heat transfer must occur to the water in order to begin to lift the piston from the stops? (2) Once the piston is lifted from the stops, will the water pressure change? Why? (5) Assuming that the water's pressure remains constant, find the work for the volume to double in kJ. Carefully indicate the direction (i.e., what is the work that you reported being done on or…
thermodynamics. Help me out.
The Subject is Thermodynamics 1
The first step of a thermodynamic cycle is an isobaric process with increasing volume. The second is an isochoric process, with decreasing pressure. The last step may be either an isothermal or adiabatic process, ending at the starting point of the isobaric process. Sketch a graph of these two possibilities, and comment on which will have greater net work per cycle.
Measured data for pressure versus volume during the compresion of a refrigerant within the cylinder of refrigeration compressor are given in the table below. Using data from the table, complete the following: (a) Determine a value of n such that the data are fit by an equation of the form, p V^n=constant. (b) Evaluate analytically the work done on the refrigerant, in BTU using Eq. 2.17 along with the result of part (a) (c) Using graphical or numerical integration of the data, evaluate the work done on the refrigerant, in BTU (d) Compare the different methods for estimating the work used in parts (b) and (c). Why are they estimates?
Question # 1 a) How engineering thermodynamic differs from statistical thermodynamic b) Explain what you understand by thermodynamic equilibrium? c) A can of soft drink at room temperature is put into the refrigerator so that it will cool. Would you model the can of soft drink as a closed system or as an open system? Explain.
When determining the thrust developed by a jet engine, a wise choice of control volume is (a) Fixed control volume (b) Moving control volume (c) Deforming control volume (d) Moving or deforming control volume (e) None of these
With the aid of illustrations, describe the four types of thermodynamic process.