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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

The Correct Answer

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

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