## What the standard units used when using the Reynolds Number?

(A) ft/s2

(B) centipoise

(C) kg/s

(D) None

Which of the following are not an intensive property? Pressure Velocity Volume Density Kinetic Energy

（A）I, II & III （B） IV & V （C） I, II & IV （D） III & V

**Correct Answer: D**

A copper ball that is 1.5 m in diameter has a temperature of 100C. The environment is at 0C. If the emissivity of copper is 0.15 how much power is radiated by the copper ball?

(A) 6 w (B) 5,264 W (C) 500 W (D) 1,164 W

**Correct Answer: D**

Find the slope of the line defined by: $latex y=2x^5 + 3x^4 + 2x^2 + 3x + 1$

（A）$latex m = 2x^6 + 3x^4 + 2x^3 + 3$ （B） $latex m = 10x + 12x^2 + 4x^4 + 3$ （C） $latex m = 10x^5 + 12x^4 + 4x^2 + 3$ （D） $latex m = 10x^4 + 12x^3 + 4x + 3$

**Correct Answer: D**

### More PE Exam Questions

- 1
If a process is considered to be internally reversible and adiabatic, what can the change in entropy be assumed to be?

- 2What is the elongation of a 2 meter aluminum bar when it has been stressed to 512 MPa? (E = 69 GPa)?
- 3Reactions on average will proceed faster at a higher temperature because of which of the following?
- 4
A heavy roller is held in equilibrium on a frictionless Plane AB by the force F, as shown. Which diagram correctly shows a vector polygon of the forces acting on the roller?

- 5What cycle is the most efficient?