Which of the following circular saw blades should not be stored near gasoline because the vapors will cause the blade to decompose?
A. Masonry-cutting blades
B. Carbide-tipped blades
C. Metal-cutting blades
D. Diamond tipped blades
Answer: A. Masonry-cutting blades
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Adjustments of the ____ determine the degree of protection provided by the circuit breaker if a short circuit occurs.
A. magnetic trip B. double pole C. triple pole D. overcurrent
A certain commercial jet plane uses a mean of 0.15 gallons of fuel per passenger-mile, with a standard deviation of 0.01 gallons.
a. Find the mean number of gallons the plane uses to fly 8000 miles if it carries 210 passengers. b. Assume the amounts of fuel used are independent for each passenger-mile traveled. Find the standard deviation of the number of gallons of fuel the plane uses to fly 8000 miles while carrying 210 passengers. c. The plane used X gallons of fuel to carry 210 passengers 8000 miles. The fuel efficiency is estimated as X/(210× 8000). Find the mean of this estimate. d. Assuming the amounts of fuel used are independent for each passenger-mile, find the standard deviation of the estimate in part (c).
A(n) ________ is a device used to determine dimensions on a set of building plans and is usually three-sided with each side marked with specific calibrated scales.
Fill in the blank(s) with the appropriate word(s).
Which of the following characteristics describe how the derivative controller effects the response of a controller?
A. fast initial response B. eliminates offset C. less overshoot D. both a and c