Thermodynamics (FSCT2204)
Civil Engineering and Forestry Techniques - CFT
Semester: Second Semester
Level: 200
Year: 2019
H.T.T.T.C. BAMBILI, INDUSTRIAL TECHNICS OPTIONS
THERMODYNAMICS TEST, 2018/2019
1) The mass of air in a room 3 m x 5 m x 20 m is known to be 350 kg. Determine i) the density ii) the specific
volume iii) the specific weight of the air (6Mks)
2) What temperature will have the same reading on the Kelvin scale and also on the Fahrenheit scale? (6Mks)
3) (6Mks)
To raise the temperature of 5 kg of water from 20 to 30°C, a 2-kg iron bar is heated and then dropped into the water.
What should the temperature of the bar be [c
iron
- 0.46 kJ/(kg.°C)]?
4) (6Mks)
To what temperature must a gas sample initially at 0°C and atmospheric pressure be heated if its volume is to double
while its pressure remains the same?
5) (6Mks)
A gas expands by 1.2 L at a constant pressure of 2.5 bars. During the expansion 500 J of heat is added. Find the
change in the internal energy of the gas.
Dr. NDIKUM
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