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. Carnot cycle efficiency is maximized when:

 (A) The initial temperature is 0 ° K

 (B) the ultimate temperature is 0 ° K

 (C) The difference between the initial temperature and therefore the final temperature is 0 ° K.

 (D) the ultimate temperature is 0 ° C


2. If heat is exchanged reversibly, which of the subsequent properties of the agonist will change accordingly?

 (temperature

 (B) Enthalpy

 (C) Internal energy

 (D) Entropy


3. the world under the temperature-entropy curve (T – s curve) of the thermodynamic process is

 (A) Absorbed heat

 (B) The fever was rejected

 (C) Either heat absorption or heat removal

 (D) None of those


4. 1 kg of carbon produces ________ kg of CO2 .

 (A) 3/7

 (B) 11/7

 (C) 11/3

 (D) 4/11


5. If the system returns to its initial state after browsing a series of processes

 (A) the method is thermodynamically in equilibrium

 (B) the method runs during a closed system cycle

 (C) Its entropy changes thanks to irreversibility

 (D) The sum of warmth and work transfer is going to be zero


6. the particular engine should be designed with an equivalent efficiency because of the Carnot cycle. Such a proposition

 (A) Executable

 (B) Impossible

 (C) Possible

 (D) Yes, but sophisticated


7. The manufacturer claims to possess an engine that will generate 20 horsepower. By receiving heat input of 400 kcal / mt and dealing between temperature limits of 227 ° C and 27 ° C. His claim is

 (A) Theoretically possible

 (B) Impossible

 (C) Many sophisticated things could also be possible

 (D) the value is going to be very high


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

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

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

 (C) it is impossible to create an engine that operates during a cyclic process whose purpose is to convert thermal energy to work.

 (D) All of the above


9. The gas mixture expands from 0.03m3 to 0.06m3 at continuous pressure of 1MPa & absorbs 84kJ of warmth during this method. Changes within the internal energy of the mixture are:

 (A) 30 kJ

 (B) 84 kJ

 (C) 54 kJ

 (D) 114 kJ


10. within the Carnot cycle, heat is transferred to:

 (A) Constant pressure

 (B) Fixed amount

 (C) Constant temperature

 (D) Constant enthalpy

 

11. Insulated wall

 (A) Prevents thermal interaction

 (B) Allows thermal interaction

 (C) Promotes thermal interaction

 (D) Prevent thermal interactions


12. what's a heat-insulating wall?

 (A) Prevents thermal interaction

 (B) Allows thermal interaction

 (C) Promotes thermal interaction

 (D) Prevent thermal interactions

 

13. air gas

 (A) Carbonization of soft coal

 (B) Partial combustion of coal, coke, anthracite, or charcoal during a phreatic eruption

 (C) Pass steam through incandescent coke

 (D) Pass air and an outsized amount of steam through the waste coal at about 650 ° C.

 

14. what's the efficiency of the diesel cycle?

 (A) Pressure ratio

 (B) Cut-off ratio and compression ratio

 (C) Temperature limit

 (D) Compression ratio

 

15. The door of the working refrigerator within the room remained open. Which of the subsequent explanations is correct?

 (A) the space is cooled to the temperature inside the refrigerator.

 (B) the space is extremely slightly cooled

 (C) the space gradually warms up

 (D) The temperature of the indoor air isn't affected

 

16. The gas constant (R) is equal to the two specific heats __________.

(A) Product

(B) Total

(C) Difference

(D) Ratio

 

17. A sudden drop in barometer readings is a sign of approach.

(A) Fine weather

(B) Rain

(C) Storm

(D) Cold wave

 

18. Universal Gas Constant unit is?

(A) Watt / ° K

(B) Dyne / ° C

(C) Erg / ° K

(D) Neither of the above


19. Calories are a measure of

(A) Specific heat

(B) Calorie

(C) Heat capacity

(D) Entropy


20. 1kgf / cm² is equal

(A) 760 mm Hg

(B) Zero mm Hg

(C) 735.6 mm Hg

(D) 1 mm Hg


21. Isothermal process

(A) There is no change in enthalpy

(B) There is no change in internal energy

(C) No temperature change

(D) All of these


22. Kelvin-Plank's law

(A) Saving work

(B) Heat storage

(C) Conversion of work to heat

(D) Conversion of heat to work


23. Atmospheric pressure is equal to

(A) 760 mm Hg

(B) Zero mm Hg

(C) 735.6 mm Hg

(D) 1 mm Hg


24. In the Otto cycle, the Otto cycle efficiency is higher than the diesel cycle efficiency at the same compression ratio and heat input.

(A) Low heat exhaust rate

(B) Expansion and compression are isentropic

(C) Combustion is a constant amount

(D) High maximum temperature


25. The values ​​of the gas constant (R) of the S.I. unit system are as follows.

(A) 0.287 J / kgK

(B) 2.87 J / kgK

(C) 28.7 J / kgK

(D) 287 J / kgK


26.1 atm or 1 atm is equal to

(A) 1kgf / cm²

(B) 1.033kgf / cm²

(C) 0kgf / cm²

(D) 1.0197kgf / cm²


27. The first law of thermodynamics is

(A) Conservation of mass

(B) Energy conservation

(C) Preservation of momentum

(D) Heat storage


28. Perpetual motion

(A) Thermodynamic machine

(B) Non-thermodynamic machine

(C) Fictitious machine

(D) A fictitious machine whose operation violates the laws of thermodynamics


29. Kelvin Planck's law

(A) Preservation of heat

(B) Saving work

(C) Conversion of heat to work

(D) Conversion of work to heat


30. The pressure exerted by an ideal gas is the ________ of the kinetic energy of all molecules contained in a unit volume of gas.

(A) One-third

(B) Three-quarters

(C) Half

(D) Two-thirds