Using 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)1
(B) 2
(C) 3
(D) 4
The following data have been collected:
Which of the following statements is true?
(A) The median and the mode are equal. (B) The mean and the median are equal. (C) The mean and the mode are equal. (D) The mean is larger than both the mode and the median.
Correct Answer: A
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/ft3 What is the drag on the cylinder?
(A) 150 lbf (B) 200 lbf (C) 320 lbf (D) 220 lbf
Correct Answer: D
What is the natural frequency of a body that has a period of oscillation of 2.7 seconds?
(A) 2.7 s (B) 0.75 s (C) 2.33 s (D) 4.65 s
Correct Answer: C
More PE Exam Questions
- 1How 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?
- 2What the standard units used when using the Reynolds Number?
- 3What is the thermal efficiency for a Carnot engine that operates between 100F and 400K?
- 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?
- 5Find the slope of the line defined by: $latex y=2x^5 + 3x^4 + 2x^2 + 3x + 1$