{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

MIT6_013S09_pset03

# MIT6_013S09_pset03 - MASSACHUSETTS INSTITUTE OF TECHNOLOGY...

This preview shows pages 1–2. Sign up to view the full content.

MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Electrical Engineering and Computer Science 6.013 – Electromagnetics and Applications Problem Set 3 (four problems) Suggested Reading: Course notes, Sections 3.1.3, 3.2, 5.1-5.2, 5.4, and 6.1-6.2 . Problem 3.1 Two parallel metal plates separated by d overlap a distance b and have width L; they are charged to a voltage V. (a) What is the force f [N] attracting the two plates in the y direction? (b) What is the force f // [N] attracting the two plates in the x direction? (c) Suppose we wish to design an electrostatic motor. To minimize losses associated with fringing fields the plate separation d should be less than ~ b/4 and L/4. To prevent arcing, the electric field strength E should be less than the air breakdown field strength E bd . Assume that practical considerations limit the maximum velocity of motor parts to about 100 m/s, or roughly one-third the velocity of sound, and limit the minimum plate separation to ~0.5 mm. Based on these constraints, what is roughly the maximum mechanical power P max

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}