ISRO Scientist or Engineer Mechanical 2013
For the following questions answer them individually
For a given heat flow and for the same thickness, the temperature drop across the material will be maximum for
Select statements from List II matching the processes in List I. Enter your answer as , B if the correct choice for (1) is (A) and that for (2) is (B)
A system undergoes a state change from 1 to 2. According the second law of thermodynamicsfor the process to be feasible, the entropy change, S2 — S1 of the system
In descending order of magnitude, the thermal conductivity of (a) pure iron, (b) liquid water, (c) saturated water vapour and (d) aluminum can be arranged as
For the same inlet and outlet temperatures of hot and cold fluids, the Log Mean Temperature Difference (LMTD)is
A Carnot engine.rejects 30%of absorbed heat to a sink at $$30^\circ C$$. The temperature of the heat source is
An engine operates between temperaturelimits of 900 K and T and T and 400 K. For both to be equally efficient, the values of T will be
