Which of these statements about brakes is true?
a. Brakes have more stopping power when they get very hot.
b. Brake drums cool very quickly when the vehicle is moving very fast.
c. The heavier a vehicle is, or the faster it is moving, the more heat the brakes have to absorb to stop it.
d. All of the above are true.
c. The heavier a vehicle is, or the faster it is moving, the more heat the brakes have to absorb to stop it.
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Estimate the cost of a 0.75 million gallon per day (MGD) induced-draft packed tower for air-stripping trihalomethanes from drinking water if the cost for a 2-MGD tower is $153,200. The exponent in the cost capacity equation is 0.58.
What will be an ideal response?
Alternative R has a first cost of $100,000, annual M&O costs of $50,000, and a $20,000 salvage value after 5 years. Alternative S has a first cost of $175,000 and a $40,000 salvage value after 5 years, but its annual M&O costs are not known. Determine the M&O costs for alternative S that would yield a required incremental rate of return of 20%. Solve (a) by hand, and (b) using the Goal Seek tool or RATE function on a spreadsheet.
What will be an ideal response?
How is the airflow adjusted on most commercial air handlers?
A) By moving the speed tap on the blower motor B) By adjusting the pitch of the blades on the blower wheel C) By increasing or decreasing the voltage to the fan motor D) By adjusting the sheave on an adjustable pulley
Name four vehicle defects that affect braking but are not part of the brake system.
What will be an ideal response?