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. Hot air at 1500 K is 6 times larger than volume within the polytropic process with n = 1.5. Find specific boundary work.
a) 309.5 kg / kg
B) 409.5 kg / kg
c) 509.5 kg / kg
D) 609.5 kg / kg
2. within the Carnot cycle apparatus, heat is rejected from R-22 to 40 ° C, meanwhile, R-22 is converted from saturated vapor to saturated liquid. the warmth is transferred to R-22 at 0. C. Determine the COP for the cycle.
a) 6.83.
B) 7.83.
C) 8.83.
D) 9.83.
3. 1 kg ammonia during a piston/cylinder at 50 ° C, 1000 kPa is increased to 100 kPa in a reversible isothermal process. Find work for this process.
a) 333.75 kJ
b) 343.75 kJ
C) 353.75 kg
D) 363.75 kg
4. 1 kg ammonia during a piston/cylinder at 50 ° C, 1000 kPa is increased to 140 ° C in a reversible osmotic process. Find add action.
a) 50.5 kJ
B) 60.5 kg
C) 70.5 kg
D) 80.5 kg
5. 1 kg ammonia during a piston/cylinder at 50 ° C, 1000 kPa is increased to 100 kPa in reversible adhesive process. Find work for this process.
a) 222.4 kJ
b) 232.4 kJ
C) 242.4 kg
D) 252.4 kg
6. One cylinder piston contains ammonia 50 ° C, 20 quality standards, volume 1 L. This process continues until all the liquid is gone. Assign work to the present process.
a) 7.11 kJ
b) 9.11 kJ
c) 5.11 kJ
D) 8.11 kg
7. Insulated cylinder equipped with the piston at 0.1 kg C at 100 ° C and 90 quality standards. The piston is moved, compressing the water until it reaches a pressure of 1.2 MPa. what proportion of work is required within the process?
a) -27.5 kJ
B) -47.5 kg
C) -17.5 kg
D) -37.5 kg
8. Compression and warmth transfer bring R-134a to saturated vapor within the isothermal process from 50 ° C, 500 kPa. Find specific jobs.
a) -24.25 kJ / kg
B) -25.25 kg / kg
C) -26.25 kg / kg
d) -27.25 kg / kg
9. At 300 ° C 1 kg of water spreads against the piston during a cylinder until it reaches 100 kPa, the water quality at now is 90.2%. The extension is reversible and adaptive. what proportion work does water do?
a) 371.2 kJ
B) 471.2 kg
C) 571.2 kg
D) 671.2 kg
10. A piston/cylinder contains 2 kg of ammonia at 100 kPa, 50 ° C which is compressed at 1000 kPa. The temperature is taken into account constant. determine if the method is reversed.
a) -727.6 kJ
B) -794.2 kg
C) -723.6 kg
D) -743.2 kg
11. R-134a during a piston-cylinder is at 100 kPa, –20 C which is compressed to 500 kPa in reversible adhesive process. Find specific jobs.
a) -41.63 kJ / kg
B) -11.63 kg / kg
c) -21.63 kJ / kg
d) -31.63 kJ / kg
12. A cylinder containing R-134a 150 kPa, 10 ° C has an initial volume of 20 L. A piston compresses R-134a in an iso-thermal, process until it reaches a state of saturated vapor. Calculate the task required within the process.
a) -1.197 kJ
b) -2.197 kJ
c) -3.197 kJ
d) -4.197 kJ
13. 2 kg of water during a piston/cylinder is 250 ° C, 1000 kPa which is now cooled by the constant load on the piston. This process ends when the water reaches the state of saturated liquid. Find work.
a) -363.1 kJ
b) -463.1 kJ
C) -563.1 kg
D) -663.1 kg
14. At 250 ° C, 1000 kPa water is brought into a piston/cylinder with saturated vapor with an isothermal process. Find specific jobs.
a) -38 kJ / kg
B) -138 kg / kg
C) -238 kg / kg
D) -338 kg / kg
15. At 250 ° C, 1000 kPa water is brought during a rigid container with saturated vapor. Find the precise heat transfer during this isometric process.
a) −132 kJ / kg
b) −232 kJ / kg
c) −332 kJ / kg
D) −432 kg / kg
16. Water at 250 ° C, 1000 kPa is brought into a piston/cylinder with an isobaric process. Find specific jobs.
a) -18.28 kJ / kg
B) -48.28 kg / kg
c) -28.28 kJ / kg
d) -38.28 kJ / kg
17. an important insulated cylinder/piston contains ammonia at 60 C, 1200 kPa. The piston moves, extending the action of inverting ammonia to a temperature of −20 ° C during which 600 kJ is applied by ammonia. What was the initial volume of the cylinder?
a) 0.285 m3
B) 0.385 m3
c) 0.485 m3
D) 0.585 m3
18. At 250 ° C, 1000 kPa water is brought during a piston/cylinder to the vapor saturated. Find specific jobs.
a) 139.35 kg / kg
B) 149.35 kg / kg
C) 159.35 kg / kg
D) 169.35 kg / kg
19. A piston/cylinder contains 2 kg of water at 200 ° C, 10 MPa. Water dissipates up to 200 kPa in an isothermal process. Any heat transfer takes place at 200 ° C and therefore the whole process is reversed. Calculate the entire work.
a) 1290.3 kJ
B) 1390.3 kg
C) 1490.3 kg
D) 1590.3 kg
20. a complete 1 kg steel piston/cylinder contains 0.5 kg of ammonia at 1600 kPa with both mass at 120 ° C with a minimum volume of 0.02 m3. the whole system is cooled to 30 ° C by heat transfer to a temperature of 20 ° C, and therefore the steel maintains an ammonia-like temperature during the method. Find work.
a) - 28.14 kJ
B) 38.14 kg
C) - 48.14 kg
D. 58.14 kg
21. A mass of 1000 kg during a cylinder, 1 kg of air containing 1.5 MPa, spreads up to 10 times larger volume in an inverted isothermal process. Calculate the warmth transfer during the method.
a) 460.84 kJ
b) 560.84 kJ
c) 660.84 kJ
D) 760.84 kg
22. A piston/cylinder has aired at 400 K, 100 kPa which is compressed at a final pressure of 1000 KPa. consider this process as a reversible adverbial process. Find specific jobs.
a) -166.7 kJ / kg
B) -266.7 kg / kg
c) -366.7 kJ / kg
D) -466.7 kg / kg
23. A piston/cylinder has aired at 400 K, 100 kPa which is compressed at a final pressure of 1000 KPa. consider this process as a reversible isothermal process. Find specific jobs.
a) 64264 kJ / kg
b) 64364 kJ / kg
C) 64464 kg / kg
d) 64564 kJ / kg
24. Consider a little air pistol with a cylinder volume of 1 cm 3 27 C, 250 kPa. The bullet acts as a piston and is released to permit air to circulate in a natural process. If the pressure must be 100 kPa because the bullet comes out of the cylinder, find run through the air.
a) 0.115 J.
B) 0.125 J.
C) 0.135 J.
D) 0.145 j
25. A spring-filled piston-cylinder consists of 1.5 kg air, 160 kg PA, and 27 degrees Centigrade. it's heated during a process where the pressure is linear in volume, P = A + BV, twice the initial volume where it reaches 900 K.
a) 61.4 kJ
B) 161.4 kg
C) 261.4 kg
D) 361.4 kg
26. Helium during a cylinder under ambient conditions, 100 kPa, 20 ° C, is compressed to 600 kPa during a reversible method thermal process, after which the gas is increased back to 100 kPa within the reversible adhesive process. ۔ Calculate network per kg of He.
a) -623.6 kJ / kg
B) +467.4 kg / kg
C) -1091.0 kg / kg
D) None of the above
27. A cylinder/piston contains 100 kg PA, 1 kg methane gas at 20 ° C. The gas is inverted at a pressure of 800 kPa. If the method is adiabatic, calculate the specified work.
a) -112.0 kJ
B) -212.0 kg
C) -312.0 kg
D) -412.0 kg
28. A piston/cylinder has aired at 100 kPa, 300 K. Use constant heat capacity and find specific work.
a) -233.6 kg / kg
B) -243.6 kg / kg
c) -253.6 kg / kg
D) -263.6 kg / kg
29. The limited gas within the piston cylinder is compressed during a quasi-static process from 80 kPa and 0.1 m3 to 400 kPa and 0.03m3. If pressure and volume are associated with PV مسلسل n = constant, calculate the work involved during this process.
a) - 12.87 kJ
b) 12.87 kJ
C) 11.87 kg
D) 11.87 kg
30. One kg of steam is heated to 200 P C at 200 P C at constant pressure with 20% quality. Calculate the work done by the system.
a) 274.261 kJ
b) 374.261 kJ
C) 474.261 kg
D) 574.261 kg
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