The first law of thermodynamics discusses a. Thermal equilibrium b. Energy conservation c. Direction of heat flow d. Entropy is zero at absolute zero temperature
1. The first law of
a. Thermal equilibrium
b. Energy conservation
c. Direction of heat flow
d. Entropy is zero at absolute zero temperature
2. A tank contains 1 kg mass gas whose density is 700 kg/m3
. The pressure is increased from
1 bar to 3 bar. The approximate specific boundary work of the system is
a. Cannot be find since some data is missing
b. 285 kJ/kg
c. 0 kJ/kg
d. 0.285 kJ/kg
3. The nozzle is a device in which
a. Area decreases
b. Area increases
c. Velocity decreases
d. Velocity increases
4. Choose the correct statement/s with respect to entropy change during a process
a. Entropy increases with increase in pressure at constant temperature
b. Entropy increases with increase in temperature at constant pressure
c. Entropy can be kept constant by systematically increase both pressure and temperature
d. Entropy can not be changed
5. The isentropic process is also called as
a. Adiabatic process
b. Irreversible adiabatic process
c. Reversible adiabatic process
d. Reversible isochoric process
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