Engineering Thermodynamics Questions And Answers - Set 29

Practice Test: Question Set - 29

1. One kg of carbon requires 4/3 kg of oxygen and produces __________ kg of carbon monoxide gas.
    (A) 8/3
    (B) 11/3
    (C) 11/7
    (D) 7/3

2. The efficiency of Diesel cycle approaches to Otto cycle efficiency when
    (A) Cut-off is increased
    (B) Cut-off is decreased
    (C) Cut-off is zero
    (D) Cut-off is constant

3. The behavior of a perfect gas, undergoing any change in the variables which control physical properties, is governed by
    (A) Boyle's law
    (B) Charles' law
    (C) Gay-Lussac law
    (D) All of these

4. The __________ is obtained when carbonization of coal is carried out at 500° to 700° C.
    (A) Soft coal
    (B) Hard coal
    (C) Pulverized coal
    (D) Bituminous coal

5. A molecule consisting of one atom is known as
    (A) Mono-atomic
    (B) Di-atomic
    (C) Tri-atomic
    (D) Poly-atomic

6. The unit of energy is S. I. units is
    (A) Joule (J)
    (B) Joule meter (Jm)
    (C) Watt (W)
    (D) Joule/meter (J/m)

7. The amount of heat generated per kg of fuel is known as
    (A) Calorific value
    (B) Heat energy
    (C) Lower calorific value
    (D) Higher calorific value

8. The entropy __________ in an irreversible cyclic process.
    (A) Remains constant
    (B) Decreases
    (C) Increases
    (D) None of these

9. For a perfect gas, according to Boyle's law (where p = Absolute pressure, v = Volume, and T = Absolute temperature)
    (A) p v = constant, if T is kept constant
    (B) v/T = constant, if p is kept constant
    (C) p/T = constant, if v is kept constant
    (D) T/p = constant, if v is kept constant

10. Which of the following is the extensive property of a thermodynamic system?
    (A) Pressure
    (B) Volume
    (C) Temperature
    (D) Density

11. The increase in entropy of a system represents
    (A) Increase in availability of energy
    (B) Increase in temperature
    (C) Decrease in pressure
    (D) Degradation of energy

12. A cycle consisting of two isothermal and two isentropic processes, is known as
    (A) Carnot cycle
    (B) Stirling cycle
    (C) Ericsson cycle
    (D) Joule cycle

13. When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel, the process is known as __________ of fuel.
    (A) Atomization
    (B) Carbonization 
    (C) Combustion
    (D) None of these

14. Which of the following is an intensive property of a thermodynamic system?
    (A) Volume
    (B) Temperature
    (C) Mass
    (D) Energy

15. In an extensive property of a thermodynamic system
    (A) Extensive heat is transferred
    (B) Extensive work is done
    (C) Extensive energy is utilized
    (D) None of these

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Engineering Thermodynamics:
  Set 01      Set 02      Set 03      Set 04      Set 05      Set 06      Set 07      Set 08      Set 09
  Set 10      Set 11      Set 12      Set 13      Set 14      Set 15      Set 16      Set 17      Set 18
  Set 19      Set 20      Set 21      Set 22      Set 23      Set 24      Set 25      Set 26      Set 27
  Set 28      Set 29      Set 30
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