With the advancement in technology, many countries have an eye on Hydrogen fuel cell train. Will hydrogen fuel trains replace conventional trains in the coming years? Will implementing t
Recently I heard about the concept of Hydrogen fuel cell trains. It doesn't have carbon dioxide emission which makes it very environment-friendly. One thing that came to mind is tha
Chiller451 was chatting online with 3L3tCowboy. "I can't believe how lame some p
Chiller451 was chatting online with 3L3tCowboy. "I can't believe how lame some people are! I can get into any system by checking out the company web site to see how user names are defined and who is on the employee directory. Then, all i
4. Two technicians are diagnosing a problem with an OHV V-8 with flat-bottom lifters. The rocker covers have been removed and the engine is running. One pushrod is not rotating. Technician A says that the camshaft is worn and must be replaced.
When should a wet compression test be performed? Before a dry compression test After a cylinder fail
1. When should a wet compression test be performed?
a) Before a dry compression test b) After a cylinder fails a dry compression test c) When the engine is cold d) When a defective head gasket is suspected
Figure below shows a three-stage separation process. The ratio of P3/D3 is 3 the ratio of P2/D2 is 1
Figure below shows a three-stage separation process. The ratio of P3/D3 is 3 the ratio of P2/D2 is 1, and the ratio of A to B in stream P2 is 4 to 1. Calculate the composition and percent of each component in stream E.
1. An engine is misfiring. A power balance test indicates that when the spark to cylinder #4 is grounded, there is no change in the engine speed. Technician A says that a burned valve is a possible cause. Technician B says that a defective cylinder #
Two technicians are discussing how to test a car's exhaust by holding a small piece of paper within ...
1. A vehicle's oil pressure warning light is on. Technician A says that the pressure-sending unit should be replaced and the vehicle re-checked. Technician B says that a mechanical oil pressure gauge should be used to check the oil pressure befo
You are given four additional polymeric materials (A, B, C, D) to examine for potential as a ...
You are given four additional polymeric materials (A, B, C, D) to examine for potential as a vascular graft material, and are told to use size-exclusion chromatography to determine the approximate molecular weights of the unknown poly
You want to examine the possibility of using a polymeric material as an artificial load bearing ...
You want to examine the possibility of using a polymeric material as an artificial load bearing surface for articulating joints. But the deformation of this material under loading is a concern. You have been informed that if the mater
You are comparing two different processing methods used for forming Ti6Al4V into a femoral stem of ...
You are comparing two different processing methods used for forming Ti6Al4V into a femoral stem of a hip joint prosthesis. The following diagram shows the structures that result from the two methods:
You have developed two hydrogel systems for controlled release of a therapeutic growth factor ...
You have developed two hydrogel systems for controlled release of a therapeutic growth factor (GF). In one system the GF is dispersed throughout a synthetic polymer hydrogel material that degrades by hydrolysis. In the second system,
Given that a water-based liquid has LV of 72 dynes/cm, which of the two materials depicted below ...
Given that a water-based liquid has LV of 72 dynes/cm, which of the two materials depicted below is more hydrophobic? Explain how the Zisman method is used to determine critical surface tension and how the critical surface tension rel
One potential problem associated with the long-term release of a drug from an implanted material ...
One potential problem associated with the long-term release of a drug from an implanted material is the initial burst release of significant amounts of the drug. One approach to reduce this burst release is to apply a coating to the m
I can get into any system by checking out the company web site to see how user names are defined and who is on the employee directory. Then, all i
