In the United States, who establishes the dimensions and specifications for roller chain?
What will be an ideal response?
Roller chain standards for dimensions and specifications have been established by the American National Standards Institute (ANSI). These standards insure even if replacement chain is not of the same manufacture it will interchange with your old chain in both size and performance.
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Use the accompanying figure. Given angle A = 37o and angle B = 44o, compute angle C to the nearest tenth of a degree.
What will be an ideal response?
The shaft seal on an open compressor is more complicated than the gaskets and seals on other parts of the compressor because:
A) It must seal against a higher pressure. B) It must seal a shaft that is turning. C) It must seal in a vacuum. D) It is subjected to both refrigerant and oil while other seals and gaskets are not.
Dimensions needed to calculate the volume of concrete needed for a job are found in the _____
a. building codes b. construction drawings c. materials lists d. job specifica
The frequency range for ultrasonic monitoring is from _____
a. 20,000 Hz to 100 kHz b. 20,000 Hz to 100,000 kHz c. 200 kHz to 15,000 Hz d. 20 Hz to 10,000 Hz