(1) The list consisting only of intensive properties is a) Volume, temperature, pressure. (c) Specific heat, temperature, density. (b) Specific volume, mass, volume. (d) Mass, temperature, pressure. (2) Which one of the following statements is incorrect for the first law if kinetic and potential energy changes are negligible? a) Heat transfer equals internal energy change for a process. (b) Heat transfer and work have the same magnitude when the internal energy remains constant. (c) The total energy input must equal the total work output for an engine operating on a cycle. (d) The internal energy change plus the work must equal zero for an adiabatic process. ty ka undergoes Process 1-2-3 shown on the P-V diagram [3) A gas contained within a piston-cylinder assembly below. Process 1-2-3 is: (a) Constant-volume expansion followed by constant-pressure Compression. lege of Eng b) Constant-pressure compression followed by constant-volume expansion. c) Constant-volume compression followed by constant-pressure expansion. d) Constant-pressure expansion followed by constant-volume

(1) The list consisting only of intensive properties is a) Volume, temperature, pressure. (c) Specific heat, temperature, density. (b) Specific volume, mass, volume. (d) Mass, temperature, pressure. (2) Which one of the following statements is incorrect for the first law if kinetic and potential energy changes are negligible? a) Heat transfer equals internal energy change for a process. (b) Heat transfer and work have the same magnitude when the internal energy remains constant. (c) The total energy input must equal the total work output for an engine operating on a cycle. (d) The internal energy change plus the work must equal zero for an adiabatic process. ty ka undergoes Process 1-2-3 shown on the P-V diagram [3) A gas contained within a piston-cylinder assembly below. Process 1-2-3 is: (a) Constant-volume expansion followed by constant-pressure Compression. lege of Eng b) Constant-pressure compression followed by constant-volume expansion. c) Constant-volume compression followed by constant-pressure expansion. d) Constant-pressure expansion followed by constant-volume

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

(1) The list consisting only of intensive properties is
a) Volume, temperature, pressure.
(c) Specific heat, temperature, density.
(b) Specific volume, mass, volume.
(d) Mass, temperature, pressure.
(2) Which one of the following statements is incorrect for the first law if kinetic and potential energy changes
are negligible?
a) Heat transfer equals internal energy change for a process.
(b) Heat transfer and work have the same magnitude when the internal energy remains constant.
(c) The total energy input must equal the total work output for an engine operating on a cycle.
(d) The internal energy change plus the work must equal zero for an adiabatic process.
(3) A gas contained within a piston-cylinder assembly undergoes Process 1-2-3 shown on the P-V diagram
below. Process 1-2-3 is:
(a) Constant-volume expansion followed by constant-pressure
compression.
lege of E
Departme
(b) Constant-pressure compression followed by constant-volume
expansion.
c) Constant-volume compression followed by constant-pressure
expansion.
2
d) Constant-pressure expansion followed by constant-volume
compression.
(4) Air treated as an ideal gas is expanded to a lower pressure in a closed piston cylinder device and heat
transfer occurs from the surroundings so that temperature remains constant. What happens to the internal
energy of the air as it is expanded?
(a) increases, (b) decreases,
(c) remains the same, (d) not enough information.
(5) Which of the following most closely approaches the ideal gas condition for a substance?
(a) P >> PCritical and T >> TCritical
(b) P >> PCritical and T << TCritical
(c) P<<PCritical and T<< Tcritical
(d) P<< PCritical and T >> TCritical
V

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