How 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?
(A)23,400 in lbs
(B) 250,000 in lbs
(C) 37,400 in lbs
(D) 30,000 in lbs
If a process is considered to be internally reversible and adiabatic, what can the change in entropy be assumed to be?
(A) Entropy becomes Infinite (B) Entropy increases (C) Entropy decreases (D) Entropy does not change
Correct Answer: D
An iron sphere with a mass of 1.5 kg hangs from a 15 cm long spring. If the spring constant is 0.75 N/m what is the period of oscillation when the sphere is pulled down and released?
(A) 3.2 s (B) 8.9 s (C) 4.4 s (D) 12.5 s
Correct Answer: B
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
- 1What is the gauge pressure of at a point that is 15 meters below the surface of water that has an atmospheric pressure of 14.7 PSIA?
- 2An iron sphere with a mass of 1.5 kg hangs from a 15 cm long spring. If the spring constant is 0.75 N/m what is the period of oscillation when the sphere is pulled down and released?
- 3Reactions on average will proceed faster at a higher temperature because of which of the following?
- 4Using the Gibbs Phase Rule, how many intensive properties are required to fix a mixture of water and ammonia that is in a liquid state?
A company can manufacture a product using hand tools. Tools will cost $1,000, and the manufacturing cost per unit will be $1.50. As an alternative, an automated system will cost $15,000 with a manufacturing cost per unit of $0.50. With an anticipated annual volume of 5,000 units and neglecting interest, the break-even point (years) is most nearly: