What is the function of limit switches?
What will be an ideal response?
Limit switches are used to detect when an object is present or absent from a particular location.
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Compare and contrast the Federalists and the Democratic-Republicans, especially their views on popular and representative democracy, government power, the economy, and foreign affairs.
What will be an ideal response?
The indoor dry bulb temperature for AHRI rating condition "A" is:
A) 80°F. B) 67°F. C) 75°F. D) 65°F.
To safely increase the pressure in a refrigerant cylinder while charging a system, the technician should:
A) Run warm water over the cylinder. B) Heat the top of the cylinder with a small propane torch. C) Heat the bottom of the cylinder with a small propane torch. D) Immerse the cylinder in a tub of boiling water.
Consider an aluminum pan used to cook stew on top of an electric range. The bottom section of the pan is L = 0.25 cm thick and has a diameter of D = 18 cm. The electric heating unit on the range top consumes 900 W of power during cooking, and 90 percent of the heat generated in the heating element is transferred to the pan. During steady operation, the temperature of the inner surface of the pan is measured to be 108°?C. Assuming temperature-dependent thermal conductivity and one-dimensional heat transfer, express the mathematical formulation (the differential equation and the boundary conditions) of this heat conduction problem during steady operation. Do not solve.
What will be an ideal response?