Irreversibilities might not be introduced in a process by which of the following?

A) Heat transfer across a finite temperature difference
B) Expansion
C) Friction
D) The mixing of two fluids


B) Expansion
An uncontrolled expansion is irreversible, such as a membrane bursting. An expansion of a gas in a piston-cylinder arrangement can be considered reversible if there is no friction or heat transfer from the cylinder. Mixing, friction, and heat transfer across a finite temperature difference all introduce irreversiblities.

Trades & Technology

You might also like to view...

If one or more cylinders are producing different amounts of vacuum, the vacuum gauge will show a steady reading.

Answer the following statement true (T) or false (F)

Trades & Technology

Hedgehogs belong to which classification of animals?

What will be an ideal response?

Trades & Technology

If the brake pedal linkage is not adjusted correctly, brake fluid may not be able to expand back into the reservoir through the ________ of the master cylinder when the brakes get hot

A) Replenishing port (rearward hole) B) Vent port (forward hole)

Trades & Technology

Which following best represents the concept of sustainability?

A) the ability to maintain the supplier base B) the ability to make long production runs C) the ability to continue operation in the long term D) the ability to train labor effectively

Trades & Technology