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41 Cards in this Set
- Front
- Back
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pascals principle definition |
if a force is exerted at any point in an enclosed liquid the force will be transmitted without loss equally in all directions in all parts of the liquid |
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what is the formula for pressure |
force divided by area |
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what is a valve |
a component that can selectively allow liquid or air through it |
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what is a reservoir |
a storage tank for a liquid |
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pneumatic system definition |
a mechanical system that gives mechanical advantage using compressed gas |
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hydraulics definition |
the transfer of a force through liquid |
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mechanical advantage calculation |
ma= load divided by effort ma= area of output piston divided by area of input piston |
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what is a cleat |
a device use to secure a rope on boats. it tightens or holds rope so that it does not form knots |
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what is a rachet and pawl |
a device that controls turning movement in on direction |
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a single wheel fixed pulley has |
no mechanical advantage |
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what is a conventional current |
a current that moves from positive to negative |
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an AND gate |
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an OR gate |
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calculating ohm's law |
R = resistance of the resistor |
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colour code on a resistor |
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rocker switch |
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rotary switch |
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single pole, single throw switch (SPST) |
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single pole, doubt throw switch (SPSDT) |
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double pole, double throw switch (DPDT) |
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transistors |
transmitors amplify weak electrical currents into heavier currents |
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light dependent resistor |
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single wheel fixed pulley |
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single wheel moveable pulley |
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pulley block and tackle system |
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hydraulic system definition |
a mechanical system that uses liquids in cylinders to give us mechanical advantage |
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pneumatic system definition |
a mechanical system that gives us mechanical advantage using compressed gas |
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hydraulic press |
pg 63-65 |
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principles of pneumatics vs hydraulics |
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density |
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Brinell hardness table |
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flexible definition |
a material that one can bend easily without breaking |
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another word for stiff |
brittle |
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stiff definition |
a material that does not break when a force acts on it |
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proper name for corrosion |
rust |
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what causes corrosion |
water and air |
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methods of corrosion prevention |
°painting °hot-dip galvanising °replacing iron or steel with other materials that do not corrode |
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explain compression |
It is when you push or compress something and struts are able to withstand compression |
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explain tension |
It is when a structure is pulled or stretched |
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explain torsion |
It twists the element and elements that resist this are rods and beams |
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cross bracing |
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