Page 55 - BASIC CONCEPTUAL OF THERMOFLUID
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3. Each line in table below gives information about a process of a closed system. Every entry
has the same energy unit i.e. kJ. Fill in the empty spaces in the table with the correct
answers.
Mechanical forms of work
· Energy transmission with a rotating shaft
Shaft work · Example: automotive industries,
shippropeller
· Energy transmission with a rotating shaft
Spring work · Example: automotive industries, ship
propeller
Work done on · Expansion or contraction of an elastic
elastic solid bar solid bar by force of pressure
· When the force is lifted, they
return totheir original length
Work
associated · Stretching a liquid film by
with the movable portionof wire frame
stretching a · Known as surface tension (unit: N/m)
liquid film
Work done to · Potential energy or kinetic energy to
raise or to
raise or accelerate a body represents
accelerate a
work done
body
· Example: car climbing up the hill 51
