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50 Cards in this Set
- Front
- Back
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force equals ???
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mass times acceleration.
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a force is a what ???
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push or pull on a object.
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mass is what ???
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the total amount of matter in an object.
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weight is what ???
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a measurement of gravity times mass.
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torque is what ???
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the force like quantity in rotational mechanical systems.
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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 in electrical,fluid,thermal system ???
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quantities that act in the same way as a force does.
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density is found by ???
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dividing mass by volume.
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a hydrometer is what ???
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used to measure density or specific gravity in liquids.
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pressure is measured by ???
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dividing a unit of force by a unit of area.
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manometers are used to measure what ???
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pressure difference.
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the two types of fluids are ???
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hydraulic and pneumatic.
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gasses are what ???
liquids are what ??? |
compressible.
not compressible. |
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pressure increases with what ???
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depth.
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absolute pressure is what ???
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the measured in reference to a vacuum.
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weight density is what ???
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the ratio of an objects weight to its volume.
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voltage comes in what two forms ???
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AC and DC current.
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voltmeters measure what ???
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voltage difference.
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multimeter s measure what ???
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voltage,amperage,resistance.
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the positive pole or electrode in a battery is the ???
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anode.
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electrical circuits contain what ???
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source,conductors,and a load.
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temperature difference acts as a what ???
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prime mover in thermal systems.
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heat is what ???
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form of energy characterized by the vibrating movement of atoms and molecules.
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temperature is the measure of what ???
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the average energy of motion of molecules in a substance.
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thermocouples use what ???
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three wires of two different metals to measure temperature.
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the degree symbol is placed in front of the For C when ???
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giving a temperature.
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work equals ???
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force times distance.
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input work is ???
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the work going into a system.
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output work is ???
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the work done by the system.
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efficiency is ???
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output work divided by input work.
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spring scales are used to ???
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measure input and output force.
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the basic English unit of work is ???
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foot-pound.
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the basic SI unit of work is ???
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Newton-meter.
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linear mechanical work is performed when ???
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a mass is moved in a straight line.
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angular mechanical work is performed when ???
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a mass is moved around an axis or rotation.
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mechanical work causes an object to start ???
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moving,stop moving,or change direction.
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fluid work is equal to ???
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the pressure difference times the volume moved.
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when give the hight the fluid does what ???
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it raises.
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in a closed fluid system what is reused ???
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the fluid.
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there is no such thing as what ???
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linear or angular fluid work.
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the pressure exerted by a piston multiplied by the area of the piston face equals ???
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the work done by the piston.
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the cross sectional area of a cylinder can be found by multiplying ???
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0.7854 by the diameter squared.
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electrical work is done when ???
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a voltage move a specified amount amount of electrical charge.
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a coulomb is a quantity of charge equal to ???
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6.25 times 10^18 electrons.
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electrical charge can be calculated by ???
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multiplying amperes by time.
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the basic unit of electrical work is ???
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the joule.
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input work performed by an electrical pump or motor will be given in ???
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joules.
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a rate is ???
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a displacement like quantity divided by elapsed time.
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velocity is the measure of what ???
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linear mechanical work.
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speed is ???
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similar to velocity.
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