The latest type of sprinkler head is called the "cycling sprinkler". This sprinkler cycles water on and off depending on the temperature. When the disk reaches a certain temperature the valve opens, permitting water to flow. When the disk temperature cools the valve closes to shut off the water. At what temperature does the valve open?
A. 165° F
B. 175° F
C. 160° F
D. 180° F
Answer: A. 165° F
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Which of the following statements is LEAST-Likely true?
A. A leaner air-fuel mixture causes a higher resistance to spark, requiring more voltage to jump the plug gap. B. A poorly performing cylinder with a high firing line can indicate a lean air-fuel mixture. C. A poorly performing cylinder with a low firing line can indicate low compression. D. You should run the engine at 800-1,000 rpm for oscilloscope tests.
Which of the following is not listed as a product or process uncertainty?
A. Materials B. Cost C. Design D. Channels
The ____ is a 16-bit register that contains the address of the instruction fetched from memory.
A. accumulator B. condition-code register C. stack pointer D. program counter
A Schmitt trigger switching threshold for a positive-going input signal is at a __________ voltage than for a negative-going signal.
A. lesser B. greater