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. Here are some more effective ways to increase the efficiency of your Carnot engine:

(A) Raise the high temperature

(B) Lower the high temperature

(C) Raise the low temperature

(D) Lower the low temperature

 

2. Which of the following has the smallest atomic weight?

(A) Sulfur

(B) Nitrogen

(C) Oxygen

(D) Carbon

 

3. The process that occurs in an open system allows that mass transfer to the system  and from the system are known as follows:

(A) Flow process

(B) Non-flow process

(C) Insulation process

(D) None of these

 

4. The change in entropy

(A) Heat transfer

(B) Mass transfer

(C) Change in temperature

(D) Thermodynamic state

 

5. For the reversible insulation process, the change in entropy is as follows:

(A) Maximum

(B) Minimum

(C) Zero

(D) Negative

 

6. Carnot cycle

(A) Reversible engine

(B) Irreversible engine

(C) Gasoline engine

(D) Diesel engine

 

7. What is the efficiency of the diesel cycle?

(A) Increased cutoff

(B) Constant cutoff

(C) Reduction of cutoff

(D) None of these

 

8. The amount of heat required to raise the temperature of a unit mass of gas by one degree in a certain volume is called.

(A) Kilojour

(B) Specific heat at a constant volume

(C) Specific heat at constant pressure

(D) None of these

 

9. Temperature measurement is based on

(A) Thermodynamic characteristics

(B) Zero law of thermodynamics

(C) First law of thermodynamics

(D) Second law of thermodynamics

 

10. What is the efficiency of the Carnot cycle?

(A) Characteristics of the medium/substance use

(B) Engine status

(C) Working conditions

(D) Operating temperature range

 

11. Compressed air coming out of punctured soccer

(A) It gets hot

(B) It gets cooler

(C) Stay at the same temperature

(D) It may be hot or cold depending on the humidity of the surrounding air.

 

12. The water contained in the beaker can be boiled by passing steam through the beaker.

(A) At atmospheric pressure

(B) At a pressure higher than atmospheric pressure

(C) Arbitrary pressure

(D) Impossible

 

13. During the throttling process

(A) No heat exchange

(B) Do not work by expanding steam

(C) No change in the internal energy of steam.

(D) All of the above

 

14. The energy of molecular motion is displayed as

(A) Heat

(B) Potential energy

(C) Surface tension

(D) Friction

 

15. The compression ratio of the diesel engine

(A) 15-20

(B) 5-8

(C) 3-6

(D) 20-30

 

16. Diesel cycle efficiency approaches Otto cycle efficiency within the following cases:

(A) Cutoff is reduced

(B) The cutoff is constant

(C) Cutoff increases

(D) The cutoff is zero

 

17. consistent with Clausius' second law of thermodynamics statement

(A) Heat can't be transferred from a coffee temperature source to a heat source

(B) By employing a refrigeration cycle, heat is often transferred from a coffee temperature to a heat source.

(C) If the COP of the method is bigger than 1, heat is often transferred from cold to hot heat sources.

(D) Heat can't be transferred from cold to hot sources without the assistance of external energy

 

18. Thermal power station

(A) Carnot cycle

(B) Joule cycle

(C) Rankine cycle

(D) Otto cycle

 

19. Relative atomic mass of oxygen is?

(A) 14

(B) 16

(C) 18

(D) 121

 

20. what's the insulation process?

(A) The temperature of the gas changes

(B) Heat doesn't enter or leave the gas

(C) Changes in internal energy are adequate to the mechanical work done

(D) All of the above

 

21. Which of the subsequent is an irreversible cycle?

(A) Carnot

(B) Sterling

(C) Ericsson

(D) Neither of the above

 

22. The Otto cycle consists of the subsequent four processes

(A) Two isothermals and two isentropic

(B) Two isentropic processes and two constant volumes

(C) 2 isentropic, 1 const. volume, 1 const. pressure

(D) Two isentropic and two constant pressures

 

23. The efficiency of the Carnot engine

(A) Working substance

(B) Engine design

(C) Engine size

(D) Source and sink temperatures

 

24. When an equivalent compression ratio and therefore the same heat are applied

(A) The Otto cycle is more efficient than the diesel cycle

(B) Otto cycle is less efficient than diesel cycle.

(C) Efficiency depends on other factors

(D) Both the Otto cycle and therefore the diesel cycle are equally efficient

 

25. Which of the subsequent explanations is incorrect?

(A) Liquid fuel features a higher calorific value than solid fuel

(B) Solid fuel features a higher calorific value than liquid fuel

(C) Good fuel must have a coffee ignition point

(D) Liquid fuel consists of hydrocarbons

 

26. The compression ratio of the internal-combustion engine

(A) 3-6

(B) 5-8

(C) 10 to twenty

(D) 15-30

 

27. what's the efficiency of the Carnot cycle?

(A) internal-combustion engine

(B) internal-combustion engine

(C) external-combustion engine

(D) Reversible engine

 

28. the quantity of warmth required to boost the temperature of a unit mass of gas by one degree during a certain volume is named.

(A) heat at a continuing volume

(B) heat at constant pressure

(C) Kilojour

(D) None of those

 

29. The diesel cycle consists of 4 processes:

(A) Two isothermals and two isentropic

(B) Two isentropic processes and two constant volumes

(C) 2 isentropic, 1 const. volume, 1 const. pressure

(D) Two isentropic and two constant pressures

 

30. Efficiency of the Stirling cycle compared to the Carnot cycle if both the Stirling cycle and therefore the Carnot cycle operates within equivalent temperature limits.

(A)more

(B) Less

(C) Equal

(D) Depends on other factors