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Mechanical Engineering Objective Questions { Thermodynamics }

204. During which of the following process does heat rejection takes place in Carnot cycle?
A.Isothermal expansion
B.Isentropic expansion
C.Isothermal compression
D.Isentropic compression
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205. Which is the incorrect statement about Carnot cycle?
A.It is used as the alternate standard of comparison of 2 heat engines
B.All the heat engines are asked on Carnot cycle
C.It provides concept of maximizing work output between the two temperature limits
D.All of the above
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206. When two bodies are in thermal equilibrium with a third body, they are also in thermal equilibrium with each other, This statement is called
A.Zeroth law of thermodynmics
B.First law of thermodynamics
C.Second law of thermodynamics
D.Kelvin Planck's law
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207. The area under the temperature-entropy curve (Ts curve) of any thermodynamic process represents
A.Heat absorbed
B.Heat rejected
C.Either (A) or (B)
D.None of these
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208. The free expansion process is a constant enthalpy process
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209. The specific heat at constant volume is
A.The mount of heat required to rise the temperature of unit mss of gas through one degree, at consatnt pressure
B.The amount of heat required to raise the temperature of unit mass of gas through one degree, at constant volume
C.The amount of heat required to raise the temperature of 1 kg of water through one degree
D.Any one of the above
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210. One kg of carbon produces __________ kg of carbon dioxide
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