Essential variables identified by a welding procedure specification (WPS) are items that cannot be changed
without _____.
a. supervisor approval
b. site manager approval
c. requalifying the welder
d. requalifying the welding procedure
d
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A given weight of water can carry more heat than the same weight of air because ______.
a. water is heavier than air b. water has a higher specific heat c. air has a greater pressure drop d. water has less friction withi
The time spent by a customer at a checkout counter has mean 4 minutes and standard deviation 2 minutes.
a. What is the probability that the total time taken by a random sample of 50 customers is less than 180 minutes? b. Find the 30th percentile of the total time taken by 50 customers.
Two principal advantages of the Dual-Slope ADC are its:
A) high sensitivity to noise and low cost. B) low sensitivity to noise and low cost. C) high speed and low cost. D) low sensitivity to noise and high speed.
Find the Fourier transform F(?) of f(t) shown below. Simplify F(?) as much as possible.
