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. For the process from state 1 to state 2, heat transfer is given in reversible action.
a) Q = (To) * (S1-S2) for reversible
B) Question for reversal = (from) * (S2-S1)
c) Q = (To) / (S1-S2) to reverse
D) To reverse Q = (To) / (S2-S1)
2. For the process from state 1 to state 2, heat transfer is given in the irreversible process.
a) Q = (To) * (S1-S2) for non-refundable
B) Non-refundable question> (to) * (S1-S2)
c) Q <(To) * (S1-S2) for non-refundable
D) None of the above
3. Which of the following is true?
a) Q for reversible> Q for non-refundable and work for reversible <Work for non-refundable.
b) Q to reverse
c) Q for reversible <Q for non-refundable and work for reversible <work for non-refundable.
D) Q for reversal> Q for non-refundable and work for reversal> Work for non-refundable.
4. The work done in all reversible processes is equal.
A)
true
B) False
5. In an open system, for maximum work, the process must be complete.
a) Non-refundable
B) Refundable
C) Adiabatic.
D) None of the above
6. Which of the following is true for a stable flow system?
a) Mass entry = mass exit.
b) does not enter or exit the system on a large scale.
C) Mass entry can be more or less than mass exit.
D) None of the above
7. Which of the following is true for closed systems?
a) Mass entry = mass exit.
b) does not enter or exit the system on a large scale.
C) Mass entry can be more or less than mass exit.
D) None of the above
8. Which of the following is most often overlooked when calculating to find the most work?
a) KE
B) Drink
C) Both
D) None of the above
9. Work done by a closed system in a reversible process is always ___ done in a non-refundable process.
a) Less or more
B) equal to
less than c)
more than d)
10. Proof that the work done in all reversible processes is the same can be done by violating Calvin Planck's statement.
A true
B) False
11. A piston-cylinder has an air volume of 600 kPa, 290 K, and 0.01m ^ 3. A constant pressure process works 54 kg. Find the final volume of air.
a) 0.05 m ^ 3.
B) 0.01 m3.
C) 0.10 m3.
D) 0.15 m3.
12. A piston-cylinder device initially consists of air at 150 kPa and 27 ° C. In this case, the volume is 400 liters. The mass of the piston is such that 350 kPa pressure is required to move it. The air now warms up to double its volume. Determine the total heat transfer in the air.
a) 747 kJ
b) 757 kJ
C) 767 kg
D) 777 kg
13. A piston-cylinder contains 500 kg PA and 500 kg air at 0.5 kg. The air expands in a process so the pressure decreases linearly to a final state of 100 kPa and 300 kPa. Find work in action.
a) 56.1 kJ
B) 66.1 kg
C) 76.1 kg
D) 86.1 kg
14. One cylinder contains 1 kg of ammonia. Initially, the ammonia is at 180 ° C, 2 MPa and now it's cooled to 40 ° C in saturated vapor, then further cooled to twenty ° C, now the quality is 50. Find the entire work for the method, assuming a linear variable of P vs. V.
a) -19.4 kJ
B) -29.4 kg
C) -39.4 kg
D) -49.4 kg
15. A piston-cylinder has 300k, 1.5kp air at 150 kPa. Now it's hot within the two-step process. After the primary constant volume 1000 K (state 2) then 1500 K, state 3. Continuous pressure process. Find add action.
a) 205.3 kJ
B) 215.3 kg
c) 225.3 kJ
D) 235.3 kg
16. A piston-cylinder assembly contains 1 kg of R-134a which is 600 kPa in state 1, 110 ° C, then it's cooled and delivered to saturated fever, state 2. Cooling continues within the 3 states where R-134a may be a saturated liquid. Find add every two steps, 1 to 2 and a couple of to three.
a) 0, -20.22 kJ
b) -20.22 kJ, 0.
C) 0, 0.
D) -20.22 kg, -20.22 kg
17. R-22 is present during a piston-cylinder, where the quantity is 11 L when the piston hits the stop. The initial state is 150 kPa, −30 ° C V = 10 L. this technique heats up to fifteen C. Find the work done by R-22 during this process.
a) 0.35 kJ
B) 0.25 kg
c) 0.15 kJ
D) 0.05 kg
18. 50 kg of water during a piston-cylinder at 200 kPa is V = 0.1 m3. Stopping within the cylinder limits the closing volume to 0.5 m3. Now the water is heated to 200. C. Find work through with water.
a) 50 kJ
B) 60 kg
C) 70 kg
D) 80 kg
19. Ammonia during a piston/cylinder arrangement at 80 C, 700 kPa. It now cools the saturated vapor at constant pressure (state 2) at which point the piston is pinned. Cooling continues to -10 ° C (state 3). Find work.
a) -28.64 kJ / kg
b) -38.64 kJ / kg
C) -48.64 kg / kg
d) -58.64 kJ / kg
20. 1 kg of liquid water during a piston-cylinder at 300 kPa, 20 ° C. Initially the piston floats, with a maximum attachment volume of 0.002 m3 if the piston touches the stop. Now the heat is added in order that the ultimate pressure is 600 kPa. Find add action.
a) 0.30 kJ
B) 0.40 kg
C) 0.50 kg
D) 0.60 kg
21. A piston-cylinder contains 10 kg of water as a saturated liquid/vapor at 100 kPa with a typical of fifty of. Now, this volume is 3 times hotter. The mass of the piston is such a cylinder pressure of 200kPa floats it. Find the work given by water.
a) 3090 kJ
B) 3190 kg
C) 3290 kg
D) 3390 kg
22. Ammonia at 10 kg C is in piston-cylinder arrangement with an initial volume of 1 m3 at a mass of 10 kg. Initially, the resting piston at the stop is so large that a pressure of 900 kPa floats it. Ammonia is now slowly heated to 50 ° C. Find add action.
a) 483.2 kJ
B) 583.2 kg
C) 683.2 kg
D) 783.2 kg
23. a continuing pressure piston-cylinder contains 0.2 kg of water within the sort of saturated vapor at 400 kPa. Now it's cooled to capture half the first volume. Find add action.
a) -12.5 kJ
B) -24.5 kg
C) -8.5 kg
D) -18.5 kg
24. A piston-cylinder features a volume of 600 kPa, 290 K, and 0.01 m3. The constant pressure process gives 54 kJ of labor. Find the ultimate air temperature.
a) 2700 K.
B) 2800 K.
c) 2900 K.
D) 3000 K
25. A piston/cylinder contains 5 m of liquid 20 ° C water with a cross-sectional area of 0.1 m 2 above the piston. Air is allowed to enter under the piston which pulls out the water. Find the work needed to push all the water out.
a) 62.88 kJ
B) 52.88 kg
c) 92.88 kJ
D) 42.88 kg
26. A piston/cylinder at 20 C contains 1 kg of water with a volume of 0.1 m3. While the water is heated by saturated steam, the piston isn't allowed to maneuver. Find the last temperature.
a) 201.7 C
B) 211.7 C
c) 215.7 C
D) 221.7 C
27. A piston-cylinder contains 3 kg of air at 20 ° C and 300 kPa. it's now heated to 600 K at constant pressure. Find add the method.
a) 244.2 kJ
B) 254.2 kg
C) 264.2 kg
D) 274.2 kg
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