99. A gas flows through a one-inlet, one-exit control volume operating at steady state. The heat transfer takes place only at a location on the boundary where the temperature is T. For internal irreversibility with heat transfer from the control volume the specific entropy of the gas at the exit with respect to the entropy of the gas at the inlet is a. greater b. equal c. less d. indeterminate. 100. A gas flows through a one-inlet, one-exit control volume operating at steady state. The heat transfer takes place only at a location on the boundary where the temperature is T. For internal irreversibility with no heat transfer to/from the control volume the specific entropy of the gas at the exit with respect to the entropy of the gas at the inle is a. greater b. equal c. less d. indeterminate.

99. A gas flows through a one-inlet, one-exit control volume operating at steady state. The heat transfer takes place only at a location on the boundary where the temperature is T. For internal irreversibility with heat transfer from the control volume the specific entropy of the gas at the exit with respect to the entropy of the gas at the inlet is a. greater b. equal c. less d. indeterminate. 100. A gas flows through a one-inlet, one-exit control volume operating at steady state. The heat transfer takes place only at a location on the boundary where the temperature is T. For internal irreversibility with no heat transfer to/from the control volume the specific entropy of the gas at the exit with respect to the entropy of the gas at the inle is a. greater b. equal c. less d. indeterminate.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

true or false Entropy is not a property
Refrigerant 22 flows through a horizontal tube having an inside diameter of 4 cm. Therefrigerant flows at steady state and at the entrance to the tube it has with a quality of 0.3,temperature of 28°C, and velocity of 8 m/s. The refrigerant exits the tube as a saturatedliquid at 14 bar.Question:Determine:(a) the mass flow rate of the refrigerant, in kg/s.(b) the velocity of the refrigerant at the exit, in m/s.(c) the rate of heat transfer, in kW, and its associated direction with respect to therefrigerant
Argon gas flows through a well-insulated nozzle at steady state. The temperature and velocity at the inlet are 590oR and 150 ft/s, respectively. At the exit, the temperature is 440oR and the pressure is 40 lbf/in2. The area of the exit is 0.0085 ft2. Use the ideal gas model with k = 1.67, and neglect potential energy effects. Determine the velocity at the exit, in ft/s, and the mass flow rate, in lb/s.
Liquid water flows isothermally at 20°C through a one-inlet, one-exit duct operating at steady state. The duct’s inlet and exit diameters are 0.02 m and 0.07 m, respectively. At the inlet, the velocity is 10 m/s and pressure is 1 bar.At the exit, determine the mass flow rate, in kg/s, and velocity, in m/s. m2 = ? v2 = ?
A condenser of a thermal power plant operates as a surface heat exchanger, 10,000 kg / h of water vapor enters at 0.5 bar and with a quality of 0.95 and the condensate leaves as a saturated liquid at the same pressure. The cooling water enters the condenser as a separate stream at 1 bar and 20 ° C and exits at 35 ° C without pressure change, assuming steady state operation, determine: a) The temperature of the condensed steam b) The amount of cooling water required in m3 / s c) The heat energy transmitted by the steam to the cooling water in Kw
An irreversible process a) lacks a preferential direction of occurrence b) occurs spontaneously in nature c) accounts for a change in the entropy value of 0 d) is an idealized process
Steam enters a counterflow heat exchanger operating at steady state at 0.07 MPa with a quality of 0.9 and exits at the same pressure as saturated liquid. The steam mass flow rate is 1.5 kg/min. A separate stream of air with a mass flow rate of 100 kg/min enters at 30oC and exits at 60oC. The ideal gas model with cp = 1.005 kJ/kg·K can be assumed for air. Kinetic and potential energy effects are negligible.Determine the temperature of the entering steam, in oC.For the overall heat exchanger as the control volume, what is the rate of heat transfer, in kW.
Steam enters a nozzle operating at steady state at 20 bar, 263°C, with a velocity of 52 m/s. The exit pressure and temperature are 8 bar and 162°C, respectively. The mass flow rate is 2.9 kg/s. Neglecting heat transfer and potential energy, determine the inlet area in cm2.
A well-insulated turbine operating at steady state develops 29.7 MW of power for a steam flowrate of 45 kg/s. The steam enters at 25 bar with a velocity of 48 m/s and exits as a saturated vapor at 0.06 kPa with a velocity of 139 m/s. Neglecting potential energy effects, determine the inlet enthalpy in kJ/kg to the tenths place. I am fairly certain that the base equation is... H1=(Ws/m)+H2+((V2^2-V1^2)/2) ...but I do not know how to get the value of H2?
Steam enters a one-inlet, two-exit control volume at location (1) at 360°C, 100 bar, with a mass flow rate of 2 kg/s. The inlet pipe is round with a diameter of 5.2 cm. Fifteen percent of the flow leaves through location (2) and the remainder leaves at (3). For steady-state operation, determine the inlet velocity, in m/s, and the mass flow rate at each exit, in kg/s.
An industrial process discharges 75.3 kg/s of gaseous combustion products at 204°C, 100 kPa (properties at state 1). As shown in the figure, a proposed system for utilizing the combustion products combines a heat-recovery steam generator with a well-insulated turbine. At steady state, combustion products exit the steam generator at 130°C, 100 kPa, and a separate stream of water enters at 350 kPa, 46°C with a mass flow rate of 150 kg/min. At the exit of the turbine, the pressure is 7.5 kPa and the quality is 88%. Heat is lost from the steam generator at a rate of 93600 kJ/h. The changes in kinetic and potential energies of the flowing streams can be ignored as can the pressure drop for the water flowing through the steam generator. The combustion products can be modeled as air acting as an ideal gas with constant specific heats of Cv= 0.718 kJ/kg-K and Cp=1.005 kJ/kg-K. Use Rair = 0.287 kJ/kg-K. Also, for the compressed liquid, assume the substance is a saturated liquid at the given…
Air modeled as an ideal gas enters a well-insulated diffuser operating at steady state at 290 K with a velocity of 180 m/s and exits with a velocity of 48.4 m/s.For negligible potential energy effects, determine the exit temperature, in K.