ENGINEERING THERMODYNAMICS QUIZ

Volume compression ratio

Cut-off ratio and compression ratio

Temperature limits

Pressure ratio

Third law of thermodynamics

Second law of thermodynamics

First law of thermodynamics

Zeroth law of thermodynamics

Briquetted coal

Wood charcoal

None of these

Bituminous coal

735.6 mm Hg

Zero mm Hg

1 mm Hg

760 mm Hg

More volume

Less volume

Same volume

Unpredictable behavior

By heating wood with a limited supply of air to a temperature not less than 280°C

When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel

When coal is first dried and then crushed to a fine powder by pulverizing machine

From the finely ground coal by moulding under pressure with or without a binding material

pvm = C

pv = (RT)m

pv = RTm

pv = mRT

Stirling

Carnot

None of the listed here

Ericsson

(Net work output)/(Heat supplied)

(Net work output)/(Work-done by the turbine)

(Actual temperature drop)/(Isentropic temperature drop)

(Isentropic increase in temperature)/(Actual increase in temperature)

3E/4

E/3

2E/3

E/2