Thermodynamics - Ch. 1 Introduction and Basic Concepts Questions with correct answers
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Course
Power engineer
Institution
Power Engineer
Conservation of Energy Principle Correct Answer-During an interaction, energy can change from one form to another but the total amount of energy remains constant. i.e. Energy cannot be created or destroyed.
First Law of Thermodynamics Correct Answer-The first law of thermodynamics is a version o...
Thermodynamics - Ch. 1 Introduction and Basic
Concepts Questions with correct answers
Conservation of Energy Principle Correct Answer-During an interaction,
energy can change from one form to another but the total amount of
energy remains constant. i.e. Energy cannot be created or destroyed.
First Law of Thermodynamics Correct Answer-The first law of
thermodynamics is a version of the law of conservation of energy,
adapted for thermodynamic systems. The law of conservation of energy
states that the total energy of an isolated system is constant; energy can
be transformed from one form to another, but cannot be created or
destroyed. Energy is a thermodynamic property.
Second Law of Thermodynamics Correct Answer-Energy has quality as
well as quantity, and actual processes occur in the direction of
decreasing quality of energy. i.e. Hot coffee cup in a cool room.
Classical Thermodynamics Correct Answer-Macroscopic approach to
the study of thermodynamics that does not require a knowledge of the
behavior of individual particles.
Statistical Thermodynamics Correct Answer-Based on the average
behavior of large groups of individual particles.
Joule Correct Answer-Unit for work. 1 J = 1 N*m
, British Thermal Unit (Btu) Correct Answer-Energy required to raise the
temperature of 1 lbm of water at 68F by 1F.
calorie (cal) Correct Answer-Energy required to raise the temperature of
1 g of water at 14.5C by 1C.
Watt (W) Correct Answer-Time rate of change for energy in joule per
second (J/s).
Surrounding Correct Answer-The mass or region outside the system.
Boundary Correct Answer-The real or imaginary surface that separates
the system from its surroundings. Boundary of a system can be fixed or
movable.
Closed System (Control Mass) Correct Answer-Consists of a fixed
amount of mass, and no mass can cross its boundary. Energy in the form
of heat or work can cross.
Isolated System Correct Answer-Mass and energy are not allowed to
cross the boundary of the system.
Open System (Control Volume) Correct Answer-Both mass and energy
can cross the boundary.
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