Question

A fluid is supplied to a cliff 20 m high and comes down by 5 m, what is the change in specific potential energy of fluid?

(a) 100 J/Kg

(b) 150 J/Kg

(c) 200 J/Kg

(d) 250 J/Kg

I had been asked this question in exam.

The query is from Potential Energy and Kinetic Energy topic in section Introduction to Energy Balances for Processes without Reaction and Calculation of Enthalpy Changes of Basic Chemical Engineering

Answer 1

Right choice is (b) 150 J/Kg

For explanation: Change in specific potential energy = 10*(20 – 5) = 150 J/Kg.