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
What is the standard equation for calculating the future worth (F) when
given the annual rate of return (I) and the present rate (P)?
(A) $latex F=P(1+i)^{n-1}$
(B) $latex F=P(1+i)^n$
(C) $latex F=P(1-i)^n$
(D) $latex F=P(1+n)^I$
Correct Answer: B
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
A spaceship leaves the space station with an acceleration of 15 ft/s2. After 3 minutes the engines turn off and the acceleration is 0 ft/s2. What is the average velocity of the spaceship?
（A）81,100 ft/s （B） 1,350 ft/s （C） 243,000 ft/s （D） 2,700 ft/s
Correct Answer: B
More PE Exam Questions
- 1
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?
- 2
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? - 3Using the Gibbs Phase Rule, how many intensive properties are required to fix a mixture of water and ammonia that is in a liquid state?
- 4How much torque can be applied to a 6 inch outer diameter pipe that has a wall thickness of 0.25 inches when the maximum shear stress is 20,000 psi?
- 5
The following data have been collected:
Which of the following statements is true?