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30 Cards in this Set
- Front
- Back
What does force equal
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Mass times acceleration
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What is a force
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A push or pull
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What is mass
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the total amount of matter in an object
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What is torque
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the force-like quantity in a rotational mechanical system
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What is net force
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The sum of two forces
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What is a prime mover
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quantities that act in the same way as a force does in a mechanical system
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how do you find density
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density is found by dividing mass by volume
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what is a hydrometer used to measure
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density or specific gravity in liquids
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How is pressure measured
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its is measured by dividing a unit of force by a unit of area
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What are manometers used to measure
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pressure differences
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The two types of fluid are
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hydraulic and pneumatic
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Are gases compressible
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Yes
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Are liquids compressible
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No
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What is pressure independent of
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volume
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How is absolute pressure measured
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in reference to a vacuum
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How is gage pressure measured
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relative to atmospheric pressure
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What equals total pressure
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Gage pressure plus atmospheric pressure
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What is weight density
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the ratio of an objects weight to its volume
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What two forms of voltage are there
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AC, DC
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What do voltmeters measure
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Voltage difference
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What do multimeter measure
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Voltage, amperage, and resistance
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What is the positive pole of a battery
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Anode
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What is the negative pole of a battery
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Cathode
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What do electrical circuits contain
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A source, A load, and may also contain a control element
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What is the prime mover in a thermal system
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Temperature difference
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What is heat
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a form of energy characterized by the vibrating movement of atoms and molecules
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What is temperature
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the measure of the average energy of motion of molecules in a substance
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What is a thermocouple
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use three wires of two different metals to measure temperature
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When is the degree symbol places before the C or the F
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When giving a temperature
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When is the degree symbol placed after the C or the F
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when giving temperature difference
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