MECORREL2 - THERMO-FLUIDS TERMINOLOGY

1. 1 dyne = __________

• a.kg-m/s

• b.g-cm/s

• c.lb-ft/s

• d.None of the other choices

2. An adiabatic process is characterized by which of the following?

• a.The entropy change is zero

• b.The heat transfer is zero

• c.It is isothermal

• d.it is reversible

3. The dimension of “acceleration x mass” is the same as that of

• a.Power

• b.Work

• c.Length

• d.Weight

In a steady flow system, the mass of the working substance is

• a.always conserved

• b.always ceased

• c.always greater

• d.none of the other choices

5. An instrument for measuring specific gravity of fluids:

• a.flowmeter

• b.clinometer

• c.hygrometer

• d.hydrometer

6. An instrument for measuring high temperature gases:

• atmometer

• odometer

• altimeter

• pyrometer

In the SI system of measurement, the base unit for mass is:

• a.kilogram

• b.joule

• c.kilogram/m

• d.Newton

8. The ideal, reversible Carnot cycle involves four basic process. What type of processes are they

• a.all isentropic

• b.all isothermal

• c.two adiabatic and two isentropic

• d.two isothermal and two isentropic

9. What is the expression for the heat of vaporization hg = enthalpy of the saturated vapor hf = enthalpy of the saturated liquid

• hf

• hg

• hf-hg

• hg-hf

10. What is the origin of the energy conservation equation used in flow system

• a.First law of thermodynamics

• b.Second law of thermodynamics

• c.Newton’s Second law of motion

• d.Newton’s First law of motion