No.10 (MESL)

Under the provisions of the PSME Code 1993, what is the color symbol for air piping?

• Silver gray

• Green

• Light blue

• Red

Which of the following is the basis for Bernoulli’s law for fluid flow?

• Fourier’s Law

• Continuity equation

• Principle of mass conservation

• Principle of energy conservation

Which of the following is not a unit of work?

• Dyne

• Work

• Watt – second

• Newton – meter

What condition exists in an adiabatic throttling process?

• Variable enthalpy

• Constant enthalpy

• Constant entropy

• Volume constant

Specific gravity of a substance is the ratio of its density to the density of

• Mercury

• Water

• Gas

• Air

Instrument used in determining specific gravity of any substance

• Hydrometer

• Westphal balance

• Psychrometer

• All of the above

The weight of the column of air above the earth surface

• Aerostatic pressure

• Air pressure

• Atmospheric pressure

• Wind pressure

Gas being heated at constant volume is undergoing the process of

• Isentropic

• Adiabatic

• Isobaric

• Isometric

A process that has no heat transfer

• Reversible

• Adiabatic

• Polytropic

• Isometric

Heat normally flowing from a high temperature body to a low temperature body wherein it is impossible to convert heat without other effects is

• 1st law of thermodynamics

• 2nd law of thermodynamics

• 3rd law of thermodynamics

• Zeroth law