Mechanical Engineering Mcqs

A) Pressure only

B) Temperature only

C) Dryness fraction only

D) Pressure and dryness fraction

A) Horizontal straight line

B) Vertical straight line

C) Straight inclined line

D) Curved line

A) Heat transfer takes place

B) Work is done by the expanding steam

C) Internal energy of steam changes

D) None of the above

A) 539 kcal/kg

B) 539 BTU/lb

C) 427 kcal/kg

D) 100 kcal/kg

A) Maximum

B) Minimum

C) Zero

D) Depends on temperature also

A) Volume

B) Pressure

C) Entropy

D) Enthalpy

A) Pressure alone

B) Temperature alone

C) Pressure and temperature

D) Pressure and dryness fraction

A) Equals that of the surroundings

B) Equals 760 mm of mercury

C) Equals to atmospheric pressure

D) Equals the pressure of water in the container

A) Lowers the boiling point of a liquid

B) Raises the boiling point of a liquid

C) Does not affect the boiling point of a liquid

D) Reduces its volume

A) Hygroscopic substances

B) Water vapour in air

C) Temperature of air

D) Pressure of air