Thermodynamics – Section 2

21. One kg of carbon produces __________ kg of carbon dioxide.

A. 3/7
B. 7/3
C. 11/3
D. 3/11

Show Answer

22. Ericsson cycle consists of two constant pressure and two isothermal processes.

A. Agree
B. Disagree

Show Answer

23. The isothermal and isentropic processes are reversible non-flow processes.

A. Agree
B. Disagree

Show Answer

24. The blast furnace gas is a by-product in the production of pig iron in the blast furnace.

A. Yes
B. No

Show Answer

25. The heat supplied to the gas at constant volume is (where m = Mass of gas, c_v = Specific heat at constant volume, c_p = Specific heat at constant pressure, T₂ – T₁ = Rise in temperature, and R = Gas constant)

A. mR(T₂ – T₁)
B. mc_v(T₂ – T₁)
C. mc_p(T₂ – T₁)
D. mc_p(T₂ + T₁)

Show Answer

26. Liquid fuels have lower efficiency than solid fuels.

A. True
B. False

Show Answer

27. The heat absorbed during a polytropic process is

Show Answer

28. Liquid fuels consist of hydrocarbons.

A. True
B. False

Show Answer

29. The expansion ratio (r) is the ratio of (where v₁ = Volume at the beginning of expansion, and v₂ = Volume at the end of expansion)

Show Answer

30. The dual combustion cycle consists of one constant pressure, two constant volume and two isentropic processes.

A. Agree
B. Disagree

Show Answer