Root suck back is caused by the surface tension of the molten metal trying to pull itself into a ball, forming a(n) ____.
A. complete root surface
B. V-groove
C. concave root surface
D. incomplete root surface
Answer: C
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We have studied six methods for approximating an analog filter by an IIR digital filter. Impulse Invariant, Step Invariant, Finite Difference, Matched-z, Direct Substitution and Bilinear
(a) Which method(s) can be done without using any time-domain functions in the process? (b) Which method(s) squeeze(s) the entire continuous-time frequency from zero to infinity into the discrete-time radian-frequency range zero to ?. (c) Which two methods are almost the same, differing only by a time-domain delay? (d) Which method can design an unstable digital filter while trying to approximate a stable analog filter and, if constrained to only stable designs, restricts the flexibility of the design to only certain types of filters?
A major error in an employee observation activity is _____.
a. bringing the error to the attention of the crew b. discussing it at the next management meeting c. reviewing the employee file at the same time d. blaming the employee for the unsafe behavior
Most MAP sensors produce what type of output signal?
A) DC milliamperes (DCA) B) Frequency (Hz) C) AC voltage (ACV) D) Analog DC voltage (DCV)
The following scales and their notations are common to mechanical drawings:
A. FULL or 1:1 B. HALF or 1:2 C. QUARTER or 1:4 D. DOUBLE or 2:1 E. all of the above