101. The free expansion process is __________ non-flow process.
reversible
irreversible
✅ The correct answer is option B.
Thermodynamics MCQs
102. When a system changes its state from one equilibrium state to another equilibrium state, then the path of successive states through which the system has passed, is known as
thermodynamic law
thermodynamic process
thermodynamic cycle
none of these
✅ The correct answer is option B.
103. One kg of carbon requires 8/3 kg of oxygen for its complete combustion and produces 11/3 kg of carbon dioxide gas.
Agree
Disagree
✅ The correct answer is option A.
104. The entropy is a point function and thus it is a property of the same.
Correct
Incorrect
✅ The correct answer is option A.
105. In open cycle gas turbine plants
the indirect heat exchanger and cooler is avoided
direct combustion system is used
a condenser is used
all of the above
✅ The correct answer is option D.
106. The compression ratio is the ratio of
swept volume to total volume
total volume to swept volume
swept volume to clearance volume
total volume to cleara
✅ The correct answer is option D.
107. The gas constant (R) is equal to the
sum of two specific heats
difference of two specific heats
product of two specific heats
ratio of two specific
✅ The correct answer is option B.
108. Briquetted coal is produced from the finely ground coal by moulding under pressure with or without a binding material.
TRUE
FALSE
✅ The correct answer is option A.
109. The hard coke is obtained when carbonisation of coal is carried out at
300° to 500°C
500° to700°C
700° to 900°C
900° to 1100°C
✅ The correct answer is option D.
110. The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)
✅ The correct answer is option C.