respectively.2 of 23.20 A two-phase liquid-vapor mixture of a substance haspressure of 150 bar and occupies a volume of 0.2 m'. Themasses of saturated liquid and vapor present are 3.8 kg and4.2 kg. respectively. Determine the specific volume of themixture, in m'/kg.3-76 A system consisting of 2 kg of ammonia undergoes acycle composed of the following processes:Process 1-2: Constant volume from p= 10 bar, = 0.6 tosaturated vapor.Process 2-3: Constant temperatureoto ps- pP1. Qa-+228 kJ.Process 3-1:Sketch the cycle on p-v and T-U diagrams. Neglectingkinetic and potential energy effects, determine the net workfor the cyele and the heat transfer for each process, all in kl.Constant pressure.3.123 Air is confined to one side of a rigid container divideby a partition, as shown in Fig. P3.123. The other side istially evacuated. The air is initially at P 5 bar, T- S00 Kand V,- 0.2 m. When the partition is removed, the iexpands to fill the entire chamber. Measurements show thVa - 2 V and Pa= P/4. Assuming the air behaves asideal gas, determine (a) the final temperaature, in K, and (b) theheat transfer, kJ.Ovableparti ionO2S bar- 300 OKVacuuwmntially:Pinally:3.134 One kilogram of air in a piston-cylinder assemblyundergoes two processes in scries from an initial state wherePi - 0.5 MPa, T,-227 C:Process 1-2:ume is twice the initial volume.Constant-temperature expansion until the vol-Process 2-3: Constant-volume heating until the pressure isagain 0.5 MPa.Sketch the two processes in series on a p-v diagram. Assum-ing ideal gas behavior, determine (a) the pressure at state 2.in MPa, (b) the temperature at state 3, in "C, and for eachof the processes (c) the work and heat transfer, each in kJ.

Given details: Pressure(P)=150 barVolume(V)=0.2 m3mass of liquid(mL)=3.8 kgmass of vapour(mV)=4.2 kg…

2 of 3.20 A two-phase liquid-vapor mixture of a substance has pressure of 150 bar and occupies a volume of 0.2 m'. The masses of saturated liquid and vapor present are 3.8 kg and 4.2 kg, respectively. Determine the specific volume of the mixture, in m'/kg.

2 of 3.20 A two-phase liquid-vapor mixture of a substance has pressure of 150 bar and occupies a volume of 0.2 m'. The masses of saturated liquid and vapor present are 3.8 kg and 4.2 kg, respectively. Determine the specific volume of the mixture, in m'/kg.

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

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Concept explainers

Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.

Question

respectively.
2 of 2
3.20 A two-phase liquid-vapor mixture of a substance has
pressure of 150 bar and occupies a volume of 0.2 m'. The
masses of saturated liquid and vapor present are 3.8 kg and
4.2 kg. respectively. Determine the specific volume of the
mixture, in m'/kg.
3-76 A system consisting of 2 kg of ammonia undergoes a
cycle composed of the following processes:
Process 1-2: Constant volume from p= 10 bar, = 0.6 to
saturated vapor.
Process 2-3: Constant temperature
o
to ps- pP1. Qa-
+228 kJ.
Process 3-1:
Sketch the cycle on p-v and T-U diagrams. Neglecting
kinetic and potential energy effects, determine the net work
for the cyele and the heat transfer for each process, all in kl.
Constant pressure.
3.123 Air is confined to one side of a rigid container divide
by a partition, as shown in Fig. P3.123. The other side is
tially evacuated. The air is initially at P 5 bar, T- S00 K
and V,- 0.2 m. When the partition is removed, the i
expands to fill the entire chamber. Measurements show th
Va - 2 V and Pa= P/4. Assuming the air behaves as
ideal gas, determine (a) the final temperaature, in K, and (b) the
heat transfer, kJ.
Ovable
parti ion
O2
S bar
- 300 OK
Vacuuwm
ntially:
Pinally:
3.134 One kilogram of air in a piston-cylinder assembly
undergoes two processes in scries from an initial state where
Pi - 0.5 MPa, T,-227 C:
Process 1-2:
ume is twice the initial volume.
Constant-temperature expansion until the vol-
Process 2-3: Constant-volume heating until the pressure is
again 0.5 MPa.
Sketch the two processes in series on a p-v diagram. Assum-
ing ideal gas behavior, determine (a) the pressure at state 2.
in MPa, (b) the temperature at state 3, in "C, and for each
of the processes (c) the work and heat transfer, each in kJ.

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