Engineering Thermodynamics Questions And Answers - Set 20

Practice Test: Question Set - 20

1. In a reversible adiabatic process, the ratio of T1/T2 is equal to
    (A) (p2/p1)γ - 1/ γ 
    (B) (p1/p2)γ - 1/ γ 
    (C) (v2/v1)γ - 1/ γ 
    (D) (v1/v2)γ - 1/ γ 

2. First law of thermodynamics deals with
    (A) Conservation of heat
    (B) Conservation of momentum
    (C) Conservation of mass
    (D) Conservation of energy

3. The value of cp/cv for air is
    (A) 1
    (B) 1.4
    (C) 1.45
    (D) 2.3

4. The fuel mostly used in cement industry and in metallurgical processes is
    (A) Wood charcoal
    (B) Bituminous coke
    (C) Pulverized coal
    (D) Coke

5. The absolute zero pressure can be attained at a temperature of
    (A) 0°C
    (B) 273°C
    (C) 273 K
    (D) None of these

6. Which of the following is a reversible non-flow process?
    (A) Isochoric process
    (B) Isobaric process
    (C) Hyperbolic process
    (D) All of these

7. Which of the following is the correct statement?
    (A) All the reversible engines have the same efficiency.
    (B) All the reversible and irreversible engines have the same efficiency.
    (C) Irreversible engines have maximum efficiency.
    (D) All engines are designed as reversible in order to obtain maximum efficiency.

8. In S. I. units, the value of the universal gas constant is
    (A) 8.314 J/kg mole-K
    (B) 83.14 J/kgmole-K
    (C) 831.4 J/kgmole-K
    (D) 8314 J/kgmole-K

9. When gas is heated at constant pressure, the heat supplied is utilized in
    (A) Increasing the internal energy of gas
    (B) Doing some external work
    (C) Increasing the internal energy of gas and also for doing some external work
    (D) None of the above

10. Kerosene is distilled at
    (A) 65° to 220°C
    (B) 220° to 345°C
    (C) 345° to 470°C
    (D) 470° to 550°C

11. In open cycle gas turbine plants
    (A) The indirect heat exchanger and cooler is avoided
    (B) Direct combustion system is used
    (C) A condenser is used
    (D) All of the above

12. The volumetric or molar specific heat at constant pressure is the product of
    (A) Molecular mass of the gas and the specific heat at constant volume
    (B) Atomic mass of the gas and the gas constant
    (C) Molecular mass of the gas and the gas constant
    (D) None of the above

13. The measurement of a thermodynamic property known as temperature is based on
    (A) Zeroth law of thermodynamics
    (B) First law of thermodynamics
    (C) Second law of thermodynamics
    (D) None of these

14. Which is the incorrect statement about Carnot cycle?
    (A) It is used as the alternate standard of comparison of all heat engines.
    (B) All the heat engines are based on Carnot cycle.
    (C) It provides concept of maximizing work output between the two temperature limits.
    (D) All of the above

15. According to Avogadro's law
    (A) The product of the gas constant and the molecular mass of an ideal gas is constant
    (B) The sum of partial pressure of the mixture of two gases is sum of the two
    (C) Equal volumes of all gases, at the same temperature and pressure, contain equal number of molecules
    (D) All of the above

Show and hide multiple DIV using JavaScript View All Answers

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
Share on Google Plus

    FB Comments


Post a Comment