What is the most important task of a spark plug?

A) It ensures the air and fuel mix properly.

B) It ensure that the air/fuel mixture does not self-ignite.

C) It provides the spark to ignite the air/fuel mixture.

The Poisson ratio can be measured in standardised experimental tests. a) True b) False

Chapter 15 - Fasteners: Determine the tensile load capacity of a 5/16 - 18 UNC thread and a 5/16 - 24 UNF thread made of the same material. Which is stronger? Make the same comparison for M8 x 1.25 and M8 x 1 ISO threads.

Determine the time required for the center temperature of a 3 cube to reach 808C. The cube has a volume of 125 cm. The thermal conductivity of the material is 0.4 W / (m 8C); density is 950 kg/m3; and specific heat is 3.4 kJ / (kg K).

There are two questions about SolidWorks. 1. Why is it good practice to fully define sketchgeometry? 2. Describe what happens if you do not select a planeprior to clicking on the Sketch icon when creating a sketch.

What is a good reason to keep a project's file size small? A. The file will take longer to export. B. The objects in your project will be organized better. C. It takes less time to send the file in an e-mail message. D.

The Reynolds number, rhoVD/μ is a very important parameter in fluid mechanics. Determine its value for ethyl alcohol flowing at a velocity of 4 m/s through a 2-in.-diameter pipe.

Work done by a system during a process can be considered as a property of the system. a) True b) False

When the compression process is non-quasi-equilibrium, the molecules before the piston face cannot escape fast enough, forming a high-pressure region in front of the piston. It takes more work to move the piston against this high-pressure region.

hypothetical A-B alloy of composition 40 wt% B-60 wt% A at some temperature is found to consist of mass fractions of 0.66 and 0.34 for the α and β phases, respectively.

10. Which of these requires a wheel alignment after replacement? A. Struts B. Shocks C. Both