Chapter 2, Problem 2.5P

Interpretation Introduction

Interpretation:

The fractional of the electrical energy which is used by the mixer is converted to internal energy of the dough should be determined and the fate of the remainder of the energy should be discussed.

Concept introduction:

The formula which is used to determine the electrical heat generated through the system is given as:

  $\text{Q}=\text{IVt}$

Where,

Q = electrical heat generated

I= current

V = voltage

T = time

And, the mathematical expression which is used to determine the internal energy is given as:

  $\text{U}=\text{mCΔT}$

Where, U = internal energy

m = mass

C = specific heat capacity

  $\text{ΔT}$ = change in temperature.

Now, for fraction, divide internal energy by electrical heat generated that is $\frac{\text{U}}{\text{Q}}$