What is a rocker arm and what is it used for?

What will be an ideal response?


A rocker arm is a lever used in a four-stroke engine to open the valves.

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Answer the following statements true (T) or false (F)

1 When working with pumps, technicians should make sure water is collecting under the oil. 2 Interlock systems are used to bypass emergency shutdown systems in order to keep production running so a particular unit can meet its production goals. 3 Compressors move liquids, and pumps move gases. 4 When a dynamic compressor is backed up to its surge point on the compressor’s performance curve it may stall. 5 Gas and steam turbines are activated by the expansion of fluid on a series of curved rotor vanes attached to a central shaft.

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Answer the following statement(s) true (T) or false (F)

1. The four-stroke engine has a power stroke every four turns (720° of rotation) of the crankshaft, which is every two piston strokes. 2. The two-stroke engine operates in basically the same way as the four-stroke engine. 3. A significant amount of heat is generated in any internal combustion engine during the combustion stage of the engine’s operation. 4. The main difference between an air-cooled engine and a liquid-cooled engine is the use of liquid instead of air to maintain proper engine operating temperature. 5. Multi-cylinder engines run more smoothly because there are more power strokes per 360° of crankshaft rotation.

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In the diagram below, what is the perimater of polygon EFGH?

Fill in the blank(s) with the appropriate word(s).

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The roll-off rate for this type of op amp is the same as a single RC network

A) differential amp B) uncompensated op amp C) compensated amp D) decade amplifier

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