What type of fluid displays decreasing viscosity with increasing shear rate?
Pseudoplastic Fluids
Thixotropic Fluids
Rheopectic Fluids
Newtonian Fluids
Which of the following factors do no influence the choice of pump for CONTINUOUS operations:
Corrosion Problems
The quality of liquid to be handled
The nature of the liquid to be pumped
The nature of the power supply
The bursting pressure of a pipe is directly proportional to its:
Schedule number
Inside diameter
Outside diameter
Length
The pressure after the pump in a 6 Sch 40 smooth steel pipe conducting water is 30 psia. The temperature of the system is in equilibrium with the temperature of the surroundings at (25 C). The water is discharged at an open tank 150 ft from the pump. Calculate the rate of discharge of water in ft3/s.
1
2
3
4
A square pole (s.g. 0.68), 80 mm by 80 mm by 6 m long, is suspended by a wire so that 4 m is submerged in water and 2 m is above the surface. What is the tension in the wire?
5.022 E-03 N
5.022 N
4.056 N
4.056 E-03 N
Suppose the barometer fluid (mercury) was changed to a mixture of benzene and methanol at 25C. The mixture contains 50% benzene and 50% methanol and the diameter of the column is 5 cm. How tall would the mixture rise up the column if the barometer is exposed to 1 atm.
10.629 mm
11.246 mm
12.422 mm
13.648 mm
Q. 5-7: A three-stage compressor is required to compress air from 140 kN/m2 and 283 K to 4000 kN/m2.
What is the minimum work of compression or the theoretical work rate?
319,170 J
351,482 J
360,856 J
289,486 J
Based on Question 5, what is the isothermal work done by the pump?
271,470 J
296,468 J
364,486 J
348,786 J
What is the isothermal efficiency of the process in Question 5? It may be assumed that the compression is adiabatic.
85 %
83 %
81 %
87 %
