thermodynamics multiple choice questions

    TOP MCQ

APPLIED THERMODYNAMICS OBJECTIVE TYPES QUESTIONS WITH ANSWERS.

Here may be a list of Top MCQ of Applied Thermodynamics Objective Type Questions And Answers provided for the AKTU and ALL OTHER UNIVERSITIES EXAMINATIONS. All the MCQ questions are most vital for AKTU especially. These sort of Objective questions are going to be asked in Diploma and Degree Internal Examinations.

1. Otto cycle is another name

(A) Constant pressure cycle

(B) Constant volume cycle

(C) Constant temperature cycle

(D) Constant temperature and pressure cycle

 

2. Thermal energy and energy are often converted to every other. This statement was established by

(A) Boyle

(B) Charles

(C) Jules

(D) None of those

 

3. Heat and work are often converted to every other. This statement is named the law of thermodynamics.

(A) Zero

(B) First

(C) Second

(D) Third

 

4.1 the quantity of warmth required to boost the temperature of 1 kg of water in Kelvin is called:

(A) heat at a continuing volume

(B) heat at constant pressure

(C) Kilojour

(D) None of those

 

5. The system absorbs 100 kiloJoule as heating and does 60 kiloJoule work, but along paths 1-4-3, it does 20 kiloJoule work. the heat absorbed during cycles 1-4-3. Make cycle also:

(A) -140 kJ

(B) -80 kJ

(C) -40 kJ

(D) +60 kJ

 

6. The fuel mainly utilized in the furnace for extracting iron from ore is

(A) Hard coke

(B) Soft coke

(C) Fine pulverized coal

(D) soft coal

 

7. Carnot cycle

(A) 2 const. vol. and 2 isentropic process.

(B) 2 isothermal process & 2 isentropic process.

(C) 2 const. pressure process. & 2 isentropic processes.

(D) 1 const. vol., 1 const. pressure & 2 isentropic processes.

 

8. The work done during adiabatic expansion is given by the subsequent equation (where p1 v1, T1 = initial state pressure, volume, and temperature of the gas, p2, v2, T2 = final state of the gas. Corresponding values, R = universal gas constant, and γ = heat ratio)

(A) (p1 v1-p2, v2) / (γ-1)

(B) [m R (T1-T2)] / (γ-1)

(C) [m R T1 / (γ-1)] [1-(p2, v2 / p1 v1)]

(D) All of those

 

9. within the free extension process,

(A) W1-2 = 0

(B) Q1-2 = 0

(C) dU = 0

(D) All of those

 

10. the warmth supplied when the gas is heated to a particular volume

(A) Increases the interior energy of the gas and raises the temperature of the gas

(B) Perform external work during the expansion

(C) Both (A) and (B)

(D) None of those

 

11. Carnot cycle

 (A) internal-combustion engine

(B) diesel

(C) Reversible engine

(D) Irreversible engine

 

12. the warmth supplied to the gas during a constant volume is as follows (where m = mass of gas, cv = heat in constant volume, cp = heat in constant pressure, T2-T1 = temperature Rise, R = gas constant)

(A) MR (T2-T1)

(B) MCV (T2-T1)

(C) MCP (T2-T1)

(D) mcp (T2 + T1)

 

13. The processes that occur in open systems that allow mass transfer to and from the system are referred to as follows:

(A) Flow process

(B) Non-flow process

(C) Insulation process

(D) None of those

 

14. Sterling and Ericsson cycle

(A) Reversible cycle

(B) Irreversible cycle

(C) Semi-reversible cycle

(D) Quasi-static cycle

 

15. within the isothermal process

(A) there's no natural process

(B) there's no change in enthalpy

(C) there's no change in internal energy

(D) All of those

 

16. If expansion or compression is completed consistent with the law of PVN = C, the method is understood as:

(A) Isothermal process

(B) Insulation process

(C) Hyperbolic process

(D) Polytropic process

 

17. the overall rule of expansion or compression is pvn = C. If n are equal, the method is claimed to be hyperbolic.

(A) 0

(B) 1

(C) γ

(D) ∝

 

18.1 kW

(A) 1 N-m / s

(B) 100 N-m

(C) 1000 N-m / s

(D) 1 × 106 N-m / s

 

19. we that changes within the internal energy of an ideal gas are directly proportional to changes in temperature.

(A) Boyle's law

(B) Charles' law

(C) Gay-Lussac's law

(D) Joule's law

 

20. that it's the amount of warmth required to boost the temperature of water once is named kilojoules.

(A) 1 g

(B) 10 g

(C) 100 g

(D) 1000 g

 

21. the facility of a turbine plant is given by the subsequent formula.

(A) (Network output) / (Work with a turbine)

(B) (Network output) / (Heat supply)

(C) (Actual temperature decrease) / (Isentropic temperature decrease)

(D) (Isentropic temperature rise) / (Actual temperature rise)

 

22. The variables that control the physical properties of an ideal gas are:

(A) Pressure applied by the gas

(B) Volume occupied by gas

(C) Gas temperature

(D) All of those

 

23. what's an open system?

(A) Heat and work cross the boundaries of the system, but the mass of the agonist doesn't cross the boundaries of the system.

(B) The mass of the agonist crosses the boundaries of the system, but heat and work don't cross the boundaries of the system.

(C) Both heat and work, and therefore the mass of the agonist crosses the boundaries of the system.

 

24. Which of the subsequent explanations is correct?

(A) the rise in entropy comes from a given amount of warmth at low temperatures.

(B) Changes in entropy are often seen as a measure of the supply or percentage of unavailability of warmth to convert into work.

(C) Entropy represents the utmost amount of labor that will be obtained for every temperature drop.

(D) All of the above

 

25. The calorific value of gas fuel is expressed by the subsequent formula.

(A) kJ

(B) kJ / kg

(C) kJ / m2

(D) kJ / m3

 

26. Which of the subsequent is that the correct description of the second law of thermodynamics?

 (A) it's impossible to create an engine that operates during a cyclic process whose sole purpose is to convert thermal energy into work.

(B) it's impossible to transfer heat from a chilly object to heat without the assistance of an external source.

(C) there's a particular amount of energy that will be obtained from a given amount of thermal energy.

(D) All of the above

 

27. The ratio of the precise heat at a continuing pressure (cp) to the precise heat at a continuing volume (cv) is as follows.

(A) adequate to 1

(B) but one

(C) Greater than 1

(D) None of those

 

28. Expansion rate (r) is that the ratio of (v1 = volume at the beginning of expansion, v2 = volume at the top of expansion).

(A) v1 / v2

(B) v2 / v1

(C) (v1 + v2) / v1

(D) (v1 + v2) / v2

 

29. Coke is generated

(A) When coal is first dried then crushed into a fine powder with a crusher

(B) From finely pulverized coal by molding struggling with or without a binding material

(C) When coal is strongly heated continuously for 42 to 48 hours without air within the closed container.

(D) By heating the wood to a temperature of 280 ° C or higher with a limited air supply

 

30. Carbonization of coal produces hard coke.

(A) 300 ° to 500 ° C

(B) 500 ° to 700 ° C

(C) 700 ° -900 ° C

(D) 900 ° ~ 1100 ° C