Your truck or bus has a dual air brake system. If a low-pressure warning comes on for only one system, what should you do?
a. Reduce your speed and drive to the nearest garage for repairs.
b. Stop right away and safely park. Continue only after the system is fixed.
c. Reduce your speed and test the remaining system while under way.
b. Stop right away and safely park. Continue only after the system is fixed.
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When raising an extension ladder, pull the rope until the top section is in position and then _____.
a. tie the rope onto a rung to lock the desired length of the ladder b. use at least two clamps to lock the ladder into a stable position c. securely hook the locking mechanism over the desired rung d. use the locking key to securely lock the length of the ladder
Crude oil was formed during the Mesozoic Era when dinosaurs roamed the Earth
Indicate whether the statement is true or false.
Answer the following statement(s) true (T) or false (F)
1. In a few models, fan switches are operated by a bimetal strip that closes a set of contacts. 2. In one type of fan switch, the switch is used to control the speed of a fan motor as opposed to turning it on or off. 3. One type of limit switch is used as a safety cut-off switch for a cooling system. 4. Limit switches contain a normally closed contact. 5. The fan-limit switch contains both a fan switch and a high-limit switch in one housing
Determine the forces in all bars of the truss in Figure P4.27. If your solution is statically inconsistent, what conclusions can you draw about the truss? How might you modify the truss to improve its behavior? Also, analyze the truss with your computer program. Explain your results.
