131. A closed cycle gas turbine works on Joule’s cycle.
TRUE
FALSE
✅ The correct answer is option A.
Thermodynamics MCQs
132. The efficiency of Otto cycle depends upon the specific heats of the working substance.
Yes
No
✅ The correct answer is option B.
133. The kinetic energy per kg molecule of any gas at absolute temperature T is equal to (where Ru = Universal gas constant)
Ru x T
1.5 Ru x T
2 Ru x T
3 Ru x T
✅ The correct answer is option B.
134. The efficiency of Joule cycle is
greater than Carnot cycle
less than Carnot cycle
equal to Carnot cycle
none of these
✅ The correct answer is option B.
136. Ericsson cycle consists of two constant pressure and two isothermal processes.
Agree
Disagree
✅ The correct answer is option A.
137. The gas constant (R) is equal to the __________ of two specific heats.
sum
difference
product
ratio
✅ The correct answer is option B.
138. The lower calorific value of fuel may be obtained by adding the heat of steam formed during combustion to the higher calorific value.
Yes
No
✅ The correct answer is option B.
139. The property of a working substance which increases or decreases as the heat is supplied or removed in a reversible manner, is known as
enthalpy
internal energy
entropy
external energy
✅ The correct answer is option C.
140. During which of the following process does heat rejection takes place in Carnot cycle?
Isothermal expansion
Isentropic expansion
Isothermal compression
Isentropic compression
✅ The correct answer is option C.