The primary controller in a cascade system receives a feedback signal that represents the condition of the ____ variable.
A. controlled
B. manipulated
Answer: A
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What is the approximate circumference of a circle that has a diameter of 12-3/4 inches?
a. 20 inches b. 40 inches c. 80 inches d. 100 inches
Use a hammer to assist in separating the engine halves on a four-stroke engine.
Answer the following statement true (T) or false (F)
You complete a preliminary design of a refrigerator that follows the vapor-compression cycle. Which of the following modifications to the cycle would NOT be expected to lead to an increase in the coefficient of performance of the cycle?
A. Use a turbine instead of the throttling valve to recover energy. B. Improve the lubrication of the compressor shaft to reduce friction. C. Use a metal with higher heat transfer capability in the boiler. D. Move the refrigerator to a location with a lower ambient temperature. E. Use a regulatable throttling valve instead of a fixed valve.
Technician A says when testing for maximum alternator output, the battery must be loaded to force the alternator to produce its maximum output. Technician B says after disassembly, all alternator internal components should be tested using an ammeter. Who is right?
A) A only B) B only C) Both A and B D) Neither A nor B