The name ____________________ is given to the action whereby alternating current is forced toward the surface of a conductor.
Fill in the blank(s) with the appropriate word(s).
skin effect
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What is contractual exculpation?
What will be an ideal response?
A current-limiting circuit breaker performs in a manner similar to conventional thermomagnetic circuit breakers at currents below a threshold of about _____.
a. 600A b. 700A c. 800A d. 1,000A
The lifetime of a certain component, in years, has probability density function
Two such components, whose lifetimes are independent, are available. As soon as the first component fails, it is replaced with the second component. Let X denote the lifetime of the first component, and let Y denote the lifetime of the second component.
a. Find the joint probability density function of X and Y.
b. Find P(X < 1 and Y > 1).
c. Find 
.
d. Find 
.
e. Find P(X+Y ? 2).
Some types of timing chain systems use a composite fiber material for sprockets instead of steel.
Answer the following statement true (T) or false (F)