An example of an enclosure marking may be Zone 1, AEx, d, IIA, T4, Gb. What is the meaning of ‘Gb,?
What will be an ideal response?
‘G’ stands for gas, and ‘b’ indicates a high level of protection.
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Eli Whitney developed a machine to remove seeds from cotton
Indicate whether the statement is true or false.
Cuttings' leaves lose moisture through _____
A) photosynthesis B) respiration C) transpiration D) guttation
A duty cycle is the percentage of a 10-minute period during which a welding machine can continuously _____
a. maintain a constant voltage as the output current varies b. produce a constant current over a wide voltage range c. produce its rated amperage without overheating d. establish an arc between the end of the wire electrode and the workpiece
Who gave the world a mathematical representation of how voltage, current, and resistance interact?
A. Georg Simon Ohm B. Michael Faraday C. Alessandro Volta D. James Prescott Joule