After showing the history of a composite 3D solid, you can DELETE one of the original 3D solids that was previously involved in a Boolean operation
Indicate whether the statement is true or false
True
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A good way to disconnect the power in most control circuits is to remove the ____.
a. control transformer fuse b. motor from the line c. autotransformers from the line d. braking pressure smoothly
All of the following are normal repairs for a connecting rod EXCEPT ____.
A. resizing the big end B. installing bushings into the small end C. resizing the small end D. welding any cracks
A normal reading when testing coolant for galvanic activity is ________
A) More than .5 V B) Less than 200 mV C) At least .5 V D) 5 V or more
A bandlimited periodic signal x(t) whose highest frequency is 25 Hz is sampled at 100 samples/second over exactly one fundamental period to form the signal x[n]. The samples are {x[0], x[1], x[2], x[3]} = {a, b, c, d}.
(a) Let one period of the DFT of those samples be {X[0], X[1], X[2], X[3]}. What is the value of X[1] in terms of a, b, c, and d? (b) What is the average value of x(t) in terms of a, b, c, and d? (c) One of the numbers {X[0], X[1], X[2], X[3]} must be zero. Which one is it and why? (d) Two of the numbers {X[0], X[1], X[2], X[3]} must be real numbers. Which ones are they and why? (e) If X[1] = 2 + j3, what is the numerical value of X[3] and why?