Define "bimetal strip."
What will be an ideal response?
A bimetal strip has two different metals connected back to back. These metals expand and contract at different rates and will form either a concave or convex shape to either open or close a set of contacts.
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Explain with the help of a three-dimensional sketch the reason for bending inefficiency, that is, why the strength of a material in a component is not fully utilized when the component is subjected to bending.
What will be an ideal response?
Higher welding heat, deeper penetration, and higher beads result from a higher _____
a. voltage b. travel speed c. arc length d. current
When installing the outdoor unit of a split system air source heat pump, it is important to locate the unit
A) Below the frost line to reduce defrost cycles B) Under an overhang for protection against the weather C) Above the snow line of the area D) As close to the house as possible to help shelter the unit from inclement weather
When driving at night with no other vehicles ahead, a driver should use:
a. high beam lights b. low-beam lights c. parking lights