11. Consider cylinder A and cylinder B eachAhaving 1 kg of air (R = 287 J/kgK, y = 1.4). TheBair in cylinderA300 KB is perfectly insulated. Cross sectional area of piston of cylinder A and B are0.4 m² and 0.6 m² respectively. Now the content of cylinder a is heated quasi staticallysuch that thearipressureas 100 kPa.air as perfect gas and neglecting the area of cross section of rod,done by the air in cylinder a on the air in cylinder B is(a) 20.72 k]/kg(c) 72.08 k/kg(b) 45.08 kJ/kgTiwari30.05 k/kgt Tlay"ut Tiwari

Given: To find: work done by air in cylinder A on the air in cylinder B

Answered: g air as perfect gas 1. Consider…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A piston-cylinder arrangement contains air at pressure of 1 MPa and expands according to a process represented by a straight line on p-V diagram. The final pressure is 0.1 MPa. Calculate the work done by the air if the stroke is 0.2 m and the diameter of the piston is 0.4 m?
A 2.80-mol sample of helium gas initially at 300 K, and 0.400 atm is compressed isothermally to 1.40 atm. Note that the helium behaves as an ideal gas. (a) Find the final volume of the gas. m³ (b) Find the work done on the gas. kJ (c) Find the energy transferred by heat. kJ
When 2.25 kg of a perfect gas at 400oC is heated isobarically, 523 kJ of heat is added to it. If the gas has R = 2.079 kJ/kg-K and k = 1.66, find the change in internal energy and the non-flow work of the gas during the process.
Initially 3 kg of saturated water mixture at 300 kPa with a quality of 0.8 is contained in a piston-cylinder device. The water is heated at a constant pressure until the temperature reaches 500°C. Use the properties for water on the second the third pages of the equation sheet. a. Find the work done during the process. b. Find the change in internal energy of the water. c. Find the heat transfer during the process. Is heat added or removed from the system?
3000 kJ of heat is given to 1 kg of water at 20 C. If steam with a pressure of 750 kPa is obtained as a result of this process, is this steam wet?institution? You should reach the result by typing the table values and operation steps. TIP: You should decide on enthalpy values using Thermodynamic Property Tables.
1 kg of air has initial volume of 2 x 109 mm3 is heated at Isobaric process from 298 K to 200°C. Calculate (i) ratio of specific heats (ii) heat transfer in ‘kJ’ (iii) work transfer in ‘kJ’(iv) change in internal energy in ‘kJ’ (v) volume after heating (vi) pressure before heating in ‘bar
2) Two glass bulbs, one on the left with a volume of 2 liters and the other on the right with avolume of 6 liters, are connected to one another by a thin tube that is initially closed by astopcock. The bulb on the left has 0.1 moles of ideal gas, and the bulb on the right isevacuated. The system is in thermal equilibrium with the surroundings at 300K. When thestopcock is opened, the gas flows out to fill both bulbs. Calculate A for this process. If wewere to insert a propeller to extract work as the gas flows from left to right, what is themaximum amount of work that we could possibly extract?
A copper container of mass 0.080 kg and specific heat 387 Jkg-1 K-1 contains 0.30 kg of water and 0.040 kg of ice at 0˚C. Steam at 100˚C is passed into the water and its temperature stabilizes at 20.0˚C. Find the mass of the water left in the container. Assume the system is insulated from its environment.
1.5 kg of gas at 20°C is contained in a cylinder and heated to 75°C while the volume remains constant. Calculate the heat energy supplied if c, = 700 J/kgK.
A 1.5m diameter spherical balloon containing air at (162 + 10) kPa is cooled such that the volume is reduced by 25%. For the process, the pressure is proportional to the square of the sphere’s diameter. What is the work done by the surrounding?
ANSWER ALL THREE AND GET A LIKE <3 The density of helium is 0.178 kg/m3 at STP. What is the density in kg/m3 at 25°C and 98 kPa? A steel tank initially contains oxygen gas at 450 kPag and 20°C. After 2.5 kg of oxygen had been used, the pressure and temperature of the gas in the tank was found to be 180 kPag and 20°C, respectively. What was the initial mass of oxygen in the tank in kg? A 1500-L tank contains nitrogen at a pressure of 400 kPag and a temperature of 320K. Later, because of a leak, it was found that the gage pressure has dropped to 320 kPag and the temperature has decreased to 300K, determine the amount of nitrogen that has leaked out in kg.
1 kg of air has initial volume of 2 x 109 mm3 is heated at Isobaric process from 298 K to 200°C. Calculate (i) ratio of specific heats (ii) heat transfer in ‘kJ’ (iii) work transfer in ‘kJ’(iv) change in internal energy in ‘kJ’ (v) volume after heating (vi) pressure before heating in ‘bar’.

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