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
What is the oxidation state of Carbon in Carbonate (CO3-2)
(A) -2 (B) 4 (C) 1 (D) 2
Correct Answer: B
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?
(A) 61.2cm3 (B) 30.5cm3 (C) 90.4cm3 (D) 257cm3
Correct Answer: B
Which of the following are not an intensive property? Pressure Velocity Volume Density Kinetic Energy
（A）I, II & III （B） IV & V （C） I, II & IV （D） III & V
Correct Answer: D
More PE Exam Questions
- 1What is the hydraulic diameter of a 20 inch diameter pipe that is half full?
- 2Using the Gibbs Phase Rule, how many intensive properties are required to fix a mixture of water and ammonia that is in a liquid state?
- 3An 18 wheeler has a mass of 28,000 kilograms when fully loaded. The truck goes from 0 to 90 kilometers per hour in 120 seconds. What is the force on the 18 wheeler due to acceleration?
- 4How much heat is dissipated when a current of 15 amps passes through a 4 ohm resistor?
- 5
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?