This is the Multiples Choice Questions Part 1 of the Series in Thermodynamics as one of the General Engineering and Applied Sciences (GEAS) topic. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including past Board Questions in General Engineering and Applied Sciences (GEAS) field.
Online Questions and Answers in Thermodynamics Series
Following is the list of multiple choice questions in this brand new series:
Start Practice Exam Test Questions Part I of the Series
Choose the letter of the best answer in each questions.
1. The term “thermodynamics” comes from Greek words “therme” and “dynamis” which means _______.
- A. Heat power
- B. Heat transfer
- C. Heat energy
- D. Heat motion
2. The term “thermodynamics” was first used in 1849 in the publication of a
- A. Rudolph Clausius
- B. William Rankine
- C. Lord Kelvin
- D. Thomas Savery
3. What law asserts that energy is a thermodynamic property?
- A. First law of Thermodynamics
- B. Second law of Thermodynamics
- C. Third law of Thermodynamics
- D. Zeroth law of Thermodynamics
4. What law asserts that energy has quality as well as quantity?
- A. First law of Thermodynamics
- B. Second law of Thermodynamics
- C. Third law of Thermodynamics
- D. Zeroth law of Thermodynamics
5. The macroscopic approach to the study of thermodynamics does not require a knowledge of the behavior of individual particles is called _____.
- A. Dynamic thermodynamics
- B. Static thermodynamics
- C. Statistical thermodynamics
- D. Classical thermodynamics
6. What is the more elaborate approach to the study of thermodynamics and based on the average behavior of large groups of individual particles?
- A. Dynamic thermodynamics
- B. Static thermodynamics
- C. Statistical thermodynamics
- D. Classical thermodynamics
7. What is defined a region in space chosen for study?
- A. Surroundings
- B. System
- C. Boundary
- D. Volume
8. The first law of thermodynamics is based on which of the following principles?
- A. Conservation of mass
- B. Conservation of energy
- C. Action and reaction
- D. The entropy-temperature relationship
9. What is the mass or region outside the system called?
- A. Surroundings
- B. Boundary
- C. Volume
- D. Environment
10. What is the real or imaginary surface that separates the system from its surroundings?
- A. Division
- B. Wall
- C. Boundary
- D. Interface
11. A system which consists of fixed amount of mass and no mass can cross its boundary called _____.
- A. Equilibrium system
- B. Thermal equilibrium system
- C. Open system
- D. Closed system
12. A system in which even energy is not allowed to cross the boundary is called ____.
- A. Closed system
- B. Exclusive system
- C. Isolated system
- D. Special system
13. A system in which there is a flow of mass is known as _____.
- A. Equilibrium system
- B. Isolated system
- C. Open system
- D. Closed system
14. Open system usually encloses which of the following devices?
- A. Compressor
- B. Turbine
- C. Nozzle
- D. All of the above
15. The boundaries of a control volume, which may either real or imaginary is called _____.
- A. Control boundary
- B. Control system
- C. Interface
- D. Control surface
16. Any characteristic of a thermodynamics system is called a _____.
- A. Property
- B. Process
- C. Phase
- D. Cycle
17. How are thermodynamic properties classified?
- A. Physical and chemical
- B. Intensive and extensive
- C. Real and imaginary
- D. Homogeneous and heterogeneous
18. The thermodynamic properties that are independent on the size of the system is called _____.
- A. Extensive property
- B. Intensive property
- C. Open property
- D. Closed property
19. The thermodynamic properties that are dependent on the size or extent of the system is called _____.
- A. Extensive property
- B. Intensive property
- C. Open property
- D. Closed property
20. Which is NOT an intensive property of thermodynamics?
- A. Temperature
- B. Mass
- C. Pressure
- D. Density
21. Which is NOT an extensive property of thermodynamics?
- A. Density
- B. Mass
- C. Volume
- D. Energy
22. Extensive properties per unit mass are called _____.
- A. Specific properties
- B. Relative properties
- C. Unit properties
- D. Phase properties
23. A system is in ______ equilibrium if the temperature is the same throughout the entire system.
- A. Static
- B. Thermal
- C. Mechanical
- D. Phase
24. A system is in ______ equilibrium if there is no change in pressure at any point of the system with time.
- A. Pressure
- B. Thermal
- C. Mechanical
- D. Phase
25. If a system involves two phases, it is in ______ equilibrium when the mass of each phase reaches an equilibrium level and stays there.
- A. Chemical
- B. Thermal
- C. Mechanical
- D. Phase
26. A system is in ______ equilibrium of its chemical composition does not change with time, i.e., no chemical reaction occurs.
- A. Chemical
- B. Thermal
- C. Mechanical
- D. Phase
27. “The state of a simple compressible system is completely specified by two independent, intensive properties”. This is known as ______.
- A. Equilibrium postulate
- B. State postulate
- C. Environment postulate
- D. Compressible system postulate
28. What is the unit of the total energy of the system?
- A. Kj
- B. Kj/Kg
- C. Kg
- D. g
29. Without electrical, mechanical, gravitational, surface tension and motion effects, a system is called _____ system.
- A. Simple
- B. Simple compressible
- C. Compressible
- D. Independent
30. What refers to any change that a system undergoes from one equilibrium state to another equilibrium state?
- A. Process
- B. Path
- C. Phase
- D. Cycle
31. What refers to the series of state through which a system passes during a process?
- A. Path
- B. Phase
- C. Cycle
- D. Direction
32. How many independent properties are required to completely fix the equilibrium state of a pure gaseous compound?
- A. 4
- B. 3
- C. 2
- D. 1
33. What is a process in which the system remains infinitesimally closed to an equilibrium state at all times?
- A. Path equilibrium process
- B. Cycle equilibrium process
- C. Phase equilibrium process
- D. Quasi-state or quasi- equilibrium process
34. A closed system may refer to ______.
- A. Control mass
- B. Control volume
- C. Control energy
- D. Control temperature
35. An open system may refer to ______.
- A. Control mass
- B. Control volume
- C. Control energy
- D. Control temperature
36. A system is said to be in thermodynamic equilibrium if it maintains ______ equilibrium.
- A. Mechanical and phase
- B. Thermal and chemical
- C. Thermal, mechanical and chemical
- D. Thermal, phase, mechanical and chemical
37. What is a process with identical end states called?
- A. Cycle
- B. Path
- C. Phase
- D. Either path or phase
38. What is a process during which the temperature remains constant?
- A. Isobaric process
- B. Isothermal process
- C. Isochoric process
- D. Isometric process
39. What is a process during which the pressure remains constant?
- A. Isobaric process
- B. Isothermal process
- C. Isochoric process
- D. Isometric process
40. What is a process during which the specific volume remains constant?
- A. Isobaric process
- B. Isothermal process
- C. Isochoric or isometric process
- D. Isovolumetric process
41. The prefix “iso” used to designate a process means ______.
- A. Cannot be interchanged
- B. Remains constant
- C. Approximately equal
- D. Slight difference
42. What does the term “steady” implies?
- A. No change with volume
- B. No change with time
- C. No change with location
- D. No change with mass
43. What does the tem “uniform” implies?
- A. No change with volume
- B. No change with time
- C. No change with location
- D. No change with mass
44. What is defined as a process during which a fluid flows through a control volume steadily?
- A. Transient-flow process
- B. Steady and uniform process
- C. Uniform-flow process
- D. Steady-flow process
45. The sum of all the microscopic form of energy is called _____.
- A. Total energy
- B. Internal energy
- C. System energy
- D. Phase energy
46. What type of system energy is related to the molecular structure of a system?
- A. Macroscopic form of energy
- B. Microscopic form of energy
- C. Internal energy
- D. External energy
47. What form of energy refers to those a system possesses as a whole with respect to some outside reference frame, such as potential and kinetic energies?
- A. Macroscopic form of energy
- B. Microscopic form of energy
- C. Internal energy
- D. External energy
48. Who coined the word “energy” in 1807?
- A. William Rankine
- B. Rudolph Clausius
- C. Lord Kelvin
- D. Thomas Young
49. The molecules of a gas moving through space with some velocity possesses what kind of energy?
- A. Translational energy
- B. Spin energy
- C. Rotational kinetic energy
- D. Sensible energy
50. The electrons in an atom which rotate about the nucleus possess what kind of energy?
- A. Translational energy
- B. Spin energy
- C. Rotational kinetic energy
- D. Sensible energy
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