Chapter 5, Problem 5.30P

5.5 thermodynamics

State if the listed statement is Ture (T) or False (F) and correct the false statement: 1. Thermodynamic is a science of energy 2. Closed system is also called control volume 3. Steam power plant cycle is employed to produce a mechanical and electrical energy 4. In a Carnot cycle, the isothermal process in a boiler and a condenser ( ) 5. Isobaric process means volume is constant 6. Isentropic process means adiabatic and reversible 7. Pump is a device that consumes energy 8. Compressor is a device that raises a pressure of incompressible fluid flow ( ) 9. Thermal efficiency means the output by input 10. Cycle means a group of process that has initial state and final state ( ) ( )

A system temperature and pressure becomes equal to that of the earth and transfer of energy ceases is known as unavailable energy Select one: O True O False One tonne of refrigeration is equal to 0.035 W. Select one: O True O False Which statement is FALSE O A. Impeller is absent in reciprocating compressor O B. Diffuser is present in reciprocating compressor O C. Rotary compressors are the capability of running at high speeds O D. Reciprocating compressors are bulky

Thermodynamics: Please show me how to solve the following practice problems in step by step solution (Thank you so much!)

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

Question 3

Match the following accordingly A. does not violate the first law of thermodynamics B. helps to detect the violation of the second law of thermodynamics. C. violates the first law of thermodynamics First law of thermodynamics v Second law of thermodynamics v A cup of coffe left to cool in a cooler room entropy D. Consider the direction, quality and quantity. E. helps to detect the violation of the first law of thermodynamics. F. accounts for energy conservation in a process

A closed system undergoes a thermodynamic cycle with 2 steps: process 1-2 (from state 1 to state 2), process 2-1 (from state 2 to state 1). During process 1-2, the system received energy by heat transfer of 25J. During process 2-1, energy was transferred from the system to its surrounding by heat transfer of 15J. This is a power cycle. True False

1.