Question

If all the variables of a stream are independent of time it is said to be in :

• A. steady flow
• B. unsteady flow
• C. constant flow
• D. uniform flow

Answer 1

The correct option is A steady flow

At steady state, all the thermodynamic properties has fixed value i.e. there thermodynamic properties do not change in the passage of time

Hence in steady flow all the variables are independent of time

Eg: Sink- Its temperature remain constant and is independent of time (if sink is made of material having infinite thermal capacity)

Steady state enables us to solve time-independent problems