Which of the following can not be equal to 1 mol of the substance at standard conditions?
(A)20 grams of water
(B) 6.02 x 1023 molecules of Uranium
(C) 28 grams of N2
(D) 22.4 liters on Argon
Which of the following statements is FALSE when concerning the hot working of metal?
(A) Produce a fine grained product (B) Removes strain hardening (C) Combines of annealing and cold working (D) Decreases the density of the metal
Correct Answer: D
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:
(A) 2.0 (B) 2.8 (C) 3.6 (D) 15.0
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
More PE Exam Questions
- 1What cycle is the most efficient?
- 2What is the thermal efficiency for a Carnot engine that operates between 100F and 400K?
- 3
What is the standard equation for calculating the future worth (F) when given the annual rate of return (I) and the present rate (P)?
- 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?
- 5What is the elongation of a 2 meter aluminum bar when it has been stressed to 512 MPa? (E = 69 GPa)?