Engineering/Engineering Thermodynamics MCQs Sample Test,Sample questions

Question:
 If a system undergoes a reversible isothermal process without transfer of heat, the temperature at which this process takes place is called

1.triple point of water

2.boiling point of water

3.absolute zero

4.none of the mentioned


Question:
 The entropy of any closed system can increase in which of the following way?

1.dissipative effects or internal irreversibilities

2.by heat interaction in which there is entropy transfer

3.both of the mentioned

4.none of the mentioned


Question:
 Which of the following is true according to Clausius statement?

1.it is possible to construct a device that can transfer heat from a cooler body to a hotter body without any effect

2.it is impossible to construct a device that can transfer heat from a cooler body to a hotter body without any effect

3.it is impossible to construct a device that can transfer heat from a hotter body to a cooler body without any effect

4.none of the mentioned


Question:
A 5 m long vertical tube having cross sectional area 200 cm2 is placed in a water. It is filled with 15°C water, with the bottom closed and the top open to 100 kPa atmosphere. What is the pressure at the bottom of tube?

1.119 kPa

2.129 kPa

3.139 kPa

4.149 kPa


Question:
A car uses power of 25 hp for a one hour in a round trip. Thermal efficiency of 35% can be assumed? Find the change in entropy if we assume ambient at 20°C.

1.354.1 kJ/K

2.654.1 kJ/K

3.254.1 kJ/K

4.554.1 kJ/K


Question:
A cylinder/piston contains 1kg methane gas at 100 kPa, 20°C. The gas is compressed reversibly to a pressure of 800 kPa. WHat is the work required if the process is isothermal?

1.-116.0 kJ

2.-316.0 kJ

3.-216.0 kJ

4.-416.0 kJ


Question:
A hot metal piece is cooled rapidly to 25°C, removing 1000 kJ from the metal. Calculate the change of entropy if saturated liquid R-22 at −20°C absorbs the energy so that it becomes saturated vapor.

1.0.950 kJ/K

2.7.950 kJ/K

3.3.950 kJ/K

4.5.950 kJ/K


Question:
A large exhaust fan in a lab room keeps the pressure inside at 10 cm water relative vacuum to the hallway? What is the net force acting on the door measuring 1.9 m by 1.1 m?

1.2020 N

2.2030 N

3.2040 N

4.2050 N


Question:
A piston/cylinder contains carbon dioxide at 300 kPa, 100°C with a volume of 0.2 m^3. Weights are added at such a rate that the gas compresses according to the relation PV^1.2 = constant to a final temperature of 200°C. Find the work done during the process.

1.60.4 kJ

2.-50.4 kJ

3.80.4 kJ

4.-80.4 kJ


Question:
A refrigerator with a 2 kW motor for powering the compressor gives 6000 kJ of cooling to the refrigerated space during 30 minutes of operation in a thermally insulated kitchen. Calculate the change in internal energy of the kitchen if the condenser coil behind the refrigerator rejects 8000 kJ of heat to the kitchen over the same time period.

1.3600 kJ

2.2400 kJ

3.4800 kJ

4.none of the mentioned


Question:
At 100°C, a sealed rigid vessel with a volume of 1 m3 and 2 kg of water has a volume of 1 m3. The vessel has now been warmed up. What pressure should a safety pressure valve be adjusted to achieve a maximum temperature of 200°C if one is installed?

1.431.3 kPa

2.231.3 kPa

3.831.3 kPa

4.131.3 kPa


Question:
At 15°C, a steel pot with a 5 mm thick bottom is filled with liquid water (conductivity 50 W/m K). The pot has a 10 cm radius and is now placed on a stove with a heat transmission of 250 W. Calculate the temperature on the bottom of the outer pot assuming the inner surface is 15°C.

1.15.8°C

2.16.8°C

3.18.8°C

4.19.8°C


Question:
Fluid flow through which of the following throttles the flow?

1.partially opened valve

2.orifice

3.porous plug

4.all of the mentioned


Question:
Heat does not spontaneously flow from a colder body to a hotter one. Which of the following thermodynamics law states this?

1.Zeroth law of thermodynamics

2.First law of thermodynamics

3.Second law of thermodynamics

4.Third law of thermodynamics


Question:
Heat flow into a system is ____, and heat flow out of the system is ________

1.positive, positive

2.negative, negative

3.negative, positive

4.positive, negative


Question:
If a piston/cylinder with a cross-sectional size of 0.01 m2 is resting on the stops, what should the water pressure be to lift the piston with an outside pressure of 100 kPa?

1.218kPa

2.168kPa

3.198kPa

4.318kPa


Question:
If heat Q flows reversibly from the system to the surroundings at To, what will be the effect on entropy?

1.entropy of the system is reduced by Q/To

2.system has lost entropy to the surroundings

3.entropy increase of the surroundings is Q/To

4.all of the mentioned


Question:
In which of the following systems does mass transfer occur across the system boundary?

1.isolated system

2.closed system

3.open system

4.none of the mentioned


Question:
Joule was the first to prove that heat is a type of energy, laying the groundwork for the fundamental law of thermodynamics.

1.False

2.True


Question:
Rate of energy increase within the control volume is given by

1.rate of energy inflow * rate of energy outflow

2.rate of energy inflow – rate of energy outflow

3.rate of energy inflow / rate of energy outflow

4.rate of energy inflow + rate of energy outflow


Question:
The available energy of a system ___ as its temperature or pressure decreases and approaches that of the surroundings.

1.remains constant

2.increases

3.decreases

4.none of the mentioned


Question:
The enthalpy and internal energy are the function of temperature for

1.all gases

2.steam

3.water

4.ideal gas


Question:
The entropy change of a system between two identifiable equilibrium state is ___ when the intervening process is reversible or change of state is irreversible.

1.depends on the process

2.different

3.same

4.none of the mentioned


Question:
The entropy of an isolated system can never ____

1.decrease

2.be zero

3.increase

4.none of the mentioned


Question:
The reversed heat engine takes heat from a ___ temperature body, then discharges it to a ___ temperature body and ___ an inward flow of the network.

1.high, low, gives

2.low, high, gives

3.high, low, receives

4.low, high, receives


Question:
What does (m*g*z) give?

1.macroscopic kinetic energy

2.microscopic kinetic energy

3.macroscopic potential energy

4.microscopic potential energy


Question:
What is the magnitude of mechanical work?

1.product of the force and distance travelled perpendicular to the force

2.product of the force and distance travelled parallel to the force

3.sum of the force and distance travelled perpendicular to the force

4.sum of the force and distance travelled parallel to the force


Question:
What is the relationship between Kelvin-Planck’s and Clausius’ statements?

1.violation of one doesn’t violate the other

2.not connected to each other

3.virtually two parallel statements of the second law

4.none of the mentioned


Question:
What is the value of the absolute thermodynamic temperature scale?

1.3K

2.0K

3.1K

4.4K


Question:
What is thermodynamics?

1.study of the relationship between heat and other forms of energy

2.study of the conversion of chemical energy to other forms of energy

3.study of the relationship between mechanical energy to other forms of energy

4.study of the conversion of mechanical energy to other forms of energy


Question:
When more than one fluid stream enters or leaves the control volume, which of the following type of balance is taken?

1.mass balance

2.energy balance

3.mass balance and energy balance

4.none of the mentioned


Question:
When the diver is 8 meters below the surface, the pressure gauge on his air tank reads 60 kPa. The gauge pressure will be 0 at what depth?

1.44.118 m

2.24.118 m

3.34.118 m

4.None of the mentioned


Question:
When work is dissipated into internal energy, what is the change in the disorderly motion of molecules.

1.increases

2.remains the same

3.decreases

4.none of the mentioned


Question:
Which of the following causes irreversibility?

1.electrical resistance, magnetic hysteresis

2.friction, viscosity

3.inelasticity

4.all of the mentioned


Question:
Which of the following follows the Carnot theorem?

1.Heat engines

2.Gas turbine engines

3.Gas compressors

4.All of the mentioned


Question:
Which of the following gives the Mechanical efficiency of the engine?

1.IP/BP

2.1/(BP*IP)

3.(BP*IP)

4.BP/IP


Question:
Which of the following is a branch of thermodynamics?

1.Equilibrium thermodynamics

2.Classical thermodynamics

3.Chemical thermodynamics

4.All of the mentioned


Question:
Which of the following is a thermodynamics law?

1.Zeroth law of thermodynamics

2.Faraday’s Law of thermodynamics

3.Ideal Gas Law of thermodynamics

4.Boyle’s Law of thermodynamics


Question:
Which of the following is a type of thermodynamic system?

1.Open system

2.Closed system

3.Thermally isolated system

4.All of the mentioned


Question:
Which of the following is an application of thermodynamics?

1.Refrigerators

2.Gas compressors

3.Power plants

4.All of the mentioned


Question:
Which of the following is an example of low grade energy?

1.heat from combustion of fossil fuel

2.heat or thermal energy

3.heat from nuclear fission or fusion

4.all of the mentioned


Question:
Which of the following is chosen as the standard thermometric substance?

1.Liquid

2.Solid

3.Gas

4.None of the mentioned


Question:
Which of the following is known as the inequality of Clausius?

1.cyclic integral of dW/T<=0

2.cyclic integral of dW/T>=0

3.cyclic integral of dQ/T>=0

4.cyclic integral of dQ/T<=0


Question:
Which of the following is the standard fixed point of thermometry?

1.The steam point

2.The triple point of water

3.The ice point

4.All of the mentioned


Question:
Which of the following is true for a discharging tank?

1.the process is quasi-static

2.the process is adiabatic

3.dQ=0

4.all of the mentioned


Question:
Which of the following occurs without a change in the internal energy?

1.Isochoric process

2.Isenthalpic process

3.Steady-state process

4.Isenthalpic process


Question:
Which of the following properties describe entropy?

1.point function, intensive property

2. point function, extensive property

3.path function, extensive property

4.path function, intensive property


Question:
Which of the following statements are true for a mechanical energy reservoir(MER)?

1.all processes within an MER are quasi-static

2.it is a large body enclosed by an adiabatic impermeable wall

3.stores work as KE or PE

4.all of the mentioned


Question:
Which of the following thermodynamic law gives the concept of enthalpy?

1.First law of thermodynamics

2.Second law of thermodynamics

3.Third law of thermodynamics

4.Fourth law of thermodynamics


Question:
Which of the following type of motion does Shaft uses to do work?

1.vertical motion

2.horizontal motion

3.rotational motion

4.none of the mentioned


More MCQS

  1. Civil Engineering MCQS -Building Materials Section 1
  2. Civil Engineering MCQS -Building Materials Section 2
  3. Civil Engineering MCQS -Building Materials Section 3
  4. Civil Engineering MCQS -Building Materials Section 4
  5. Mechanical Engineering Engineering MCQS -Mechanics Section-1
  6. Mechanical Engineering Engineering MCQS -Mechanics Section-2
  7. Civil Engineering MCQS -Building Materials Section 5
  8. Civil Engineering MCQS -Building Materials Section 6
  9. Civil Engineering MCQS -Building Materials Section 7
  10. Civil Engineering MCQS -Building Materials Section 8
  11. Civil Engineering MCQS-Surveying Section 1
  12. Civil Engineering MCQS-Surveying Section 2
  13. Civil Engineering MCQS-Surveying Section 3
  14. Civil Engineering MCQS-Surveying Section 4
  15. Civil Engineering MCQS-Surveying Section 5
  16. Civil Engineering MCQS-Surveying Section 6
  17. Civil Engineering MCQS-Surveying Section 7
  18. Civil Engineering MCQS-Surveying Section 8
  19. Civil Engineering (MCQS) Soil Mechanics and Foundation Engineering SET 1
  20. Civil Engineering (MCQS) Soil Mechanics and Foundation Engineering SET 2
  21. Civil Engineering (MCQS) Soil Mechanics and Foundation Engineering SET 3
  22. Civil Engineering (MCQS) Soil Mechanics and Foundation Engineering SET 4
  23. Civil Engineering (MCQS) Soil Mechanics and Foundation Engineering SET 5
  24. Civil Engineering (MCQS) Soil Mechanics and Foundation Engineering SET 6
  25. Civil Engineering [MCQS] Applied Mechanics Section -1
  26. Civil Engineering [MCQS] Applied Mechanics Section -2
  27. Civil Engineering [MCQS] Applied Mechanics Section -3
  28. Civil Engineering [MCQS] Applied Mechanics Section -4
  29. Civil Engineering [MCQS] Applied Mechanics Section -5
  30. Civil Engineering -MCQS-Hydraulics Section 1
  31. Civil Engineering -MCQS-Hydraulics Section 2
  32. Civil Engineering -MCQS-Hydraulics Section 3
  33. Civil Engineering -MCQS-Hydraulics Section 4
  34. Civil Engineering -MCQS-Hydraulics Section 5
  35. Civil Engineering -MCQS-Hydraulics Section 6
  36. Civil Engineering -MCQS-Waste Water Engineering - Section 1
  37. Civil Engineering -MCQS-Waste Water Engineering - Section 2
  38. Civil Engineering -MCQS-Waste Water Engineering - Section 3
  39. Civil -MCQ RCC Structures Design - Section 1
  40. Civil -MCQ RCC Structures Design - Section 2
  41. Civil -MCQ RCC Structures Design - Section 3
  42. Engineering Electrical Engineering Dc Motors part1
  43. Engineering Electrical Engineering Dc Motors part 2
  44. Engineering Electrical Engineering Dc Motors part3
  45. Electric Drives MCQ Questions and Answers
  46. Automobile Engineering MCQ Set 01
  47. Automobile Engineering MCQ Set 02
  48. Automobile Engineering MCQ Set 03
  49. Compressors, Gas Turbines and Jet Engines MCQ Practice Test - Set 01
  50. Compressors, Gas Turbines and Jet Engines MCQ Practice Test - Set 02
  51. Compressors, Gas Turbines and Jet Engines MCQ Practice Test - Set 03
  52. Compressors, Gas Turbines and Jet Engines MCQ Practice Test - Set 04
  53. Machine Design Mcq set 01
  54. Machine Design Mcq set 02
  55. Machine Design Mcq set 3
  56. Mechanical Engineering Design MCQ SET 03
  57. Mechanical Engineering Design MCQ SET 04
  58. Advanced Surveying mcq set 1
  59. Automobile Engineering MCQ
  60. Basic Civil Engineering Mcq
  61. Microwave Engineering Mcq Set 1
  62. Microwave Engineering Mcq Set 2
  63. Microwave Engineering Mcq Set 3
  64. Mechanical Engineering Basic Mcq Questions Set 1
  65. Mechanical Engineering Basic Mcq Questions Set 2
  66. Basic Chemical Engineering MCQ
  67. Chemical Engineering MCQ Question Set 1
  68. Chemical Engineering Mcq Question Set 2
  69. Chemical Engineering Mcq Question Set 3
  70. Chemical Engineering Mcq Question Set 4
  71. Chemical Engineering Mcq Question Set 5
  72. Chemical Engineering Mcq Question Set 6
  73. Chemical Engineering Mcq Question Set 7
  74. Chemical Engineering Mcq Question Set 8
  75. Civil Engineering Basic Set 1
  76. Chemical Engineering Mcq Question Set 9
  77. Chemical Engineering Mcq Question Set 10
  78. Civil Engineering Basic Set 2
  79. Chemical Engineering Mcq Question Set 11
  80. Chemical Engineering Mcq Question Set 12
  81. Engineering Electrical Engineering
  82. Chemical Engineering Mcq Question Set 14
  83. Chemical Engineering Mcq Question Set 15
  84. Chemical Engineering Mcq Question Set 16
  85. Chemical Engineering Mcq Question Set 17
  86. Engineering Electronics & Communication Engineering
  87. Engineering Computer Science & Engineering
  88. Computer Science & Engineering Computer Networks Mcq
  89. Environmental Engineering MCQ
  90. Microwave Engineering ECE Mcq
  91. Electrical Engineering Mcq
  92. Engineering Branch Wise MCQs
  93. Software Engineering Multiple Choice Questions
  94. Traffic Engineering MCQ
  95. Highway Engineering MCQs
  96. Engineering Thermodynamics MCQs
  97. Materials and Processes -Notch Toughness
  98. Software Engineering Multiple Choice Question Set 1
  99. Software Engineering Multiple Choice Question Set 2
  100. Software Engineering Multiple Choice Question Set 3
  101. Software Engineering Multiple Choice Question Set 4
Search
R4R Team
R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!