Time Left - 08:00 mins

AE-JE (ME) || Thermodynamics Revision Quiz

Attempt now to get your rank among 175 students!

Question 1

The work required for compression in a closed system increases when the value of ‘n’ (the index of compression) ____________.

Question 2

First law of thermodynamics ________.

Question 3

Two blocks of iron and copper, both initially at 80^oC, are dropped into a large lake at 15^oC. The mass of the iron and copper blocks are 50kg and 20kg respectively. After a while the system is in thermal equilibrium due to heat transfer between the blocks and the lake water. What will
be the total entropy change for this process?

(Data : C_iron = 0.45 kJ/kg-^oC, C_copper = 0.386 kJ/kg-^oC)

Question 4

Properties of substances like pressure, temperature and density, in thermodynamic co-ordinates are ___________.

Question 5

Slope of constant pressure line on temperature entropy diagram is given by.

Question 6

Which of the following represents the perpetual motion of the first kind

Question 7

Dryness fraction is defines as ratio of _______ in a liquid- vapour mixture.

Question 8

A vapor power cycle is being considered. Steam enters boiler at 8.4MPa, but unlike ideal boiler, steam leaves it at 8MPa and 500⁰C. Because of losses in the pipeline, steam enters the Turbine at 7.5MPa, 450⁰C. Turbine expands it to 10kPa.

Properties of the steam, at different locations of the cycle is given, in the table.