Escalating energy costs have made efficiency an important consideration in determining which adjustable ____ is best suited for a specific application.
a. accelerating relay
b. voltage control
c. current sensor
d. speed controller
d. speed controller
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If a contact is to be drawn ____ it is drawn so that the movable contact is above and touching the stationary contact.
A. normally closed B. normally open C. normally open held closed D. normally closed held open
Which of the following battery byproducts can be explosive when mixed with air?
a. Acid b. Hydrogen c. Mercury d. Zinc
This steel has additional forming after initial hot rolling and is used to clean up hot-forged steel and provides a smooth, clean surface; ensures dimensional accuracy; and increases tensile strength.
a. MS b. HRS c. CRS d. SAE
In a traditional gas furnace with a standard combination gas valve, what controls the gas valve?
A) The furnace ignition board B) The spark igniter C) The door switch D) The heating thermostat