## 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) $latex m = 10x^4 + 12x^3 + 4x + 3$

What the standard units used when using the Reynolds Number?

(A) ft/s2 (B) centipoise (C) kg/s (D) None

**Correct Answer: D**

What is the elongation of a 2 meter aluminum bar when it has been stressed to 512 MPa? (E = 69 GPa)?

(A) 1.5 cm (B) 2.0 cm (C) 1.0 cm (D) 1.7 cm

**Correct Answer: A**

Which of the following is FALSE with regards to creep I. May involve the sliding of whole grains II At high stresses creep is controlled by the movement of vacancies. III Also known as hot flow IV Creep is a time dependent deformation

(A) I (B) II (C) III (D) IV

**Correct Answer: C**

### More PE Exam Questions

- 1
A piston inside a cylinder undergoes an isentropic compression with the following values.

$latex p_1= 4.57 \frac{N}{cm^2}$$latex p_2= 34.07 \frac{N}{cm^2}$

$latex V_1 = 257 cm^3$

If the specific heat ratio (k) is 1.4, What is the compressed volume? - 2
A tube that is 10 feet long and 2 feet in diameter is placed in an air stream. The flow of the air is at a speed of 15 ft/s and is perpendicular to the long axis of the tube. If the coefficient of drag is 1.3 and the density of air is 0.075 lbm/ft

^{3}What is the drag on the cylinder? - 3Find the slope of the line defined by: $latex y=2x^5 + 3x^4 + 2x^2 + 3x + 1$
- 4What the standard units used when using the Reynolds Number?
- 5What would the annuity be over a 20 year period that has an interest rate of 10% and a present worth of $500?