Mechanical Technology Questions With 100% Correct Answers.

Levers - a rigid bar that pivots about one point and that is used to move an object at a second point by a force applied at a third. Inclined planes - one of the simple machines, a plane surface inclined to the horizon, or forming with a horizontal plane any angle but a right angle. Wedges - a piece of hard material with two principal faces meeting in a sharply acute angle, for raising, holding, or splitting objects by applying a pounding or driving force, as from a hammer. Wheels and axles - any machine, apparatus, instrument, etc., shaped like this or having a circular frame, disk, or revolving drum as an essential feature: Pulleys - a wheel, with a grooved rim for carrying a line, that turns in a frame or block and serves to change the direction of or to transmit force, as when one end of the line is pulled to raise a weight at the other end: one of the simple machines. Screws - a threaded cylindrical pin or rod with a head at one end, engaging a threaded hole and used either as a fastener or as a simple machine for applying power, as in a clamp, jack, etc. Gears - a part, as a disk, wheel, or section of a shaft, having cut teeth of such form, size, and spacing that they mesh with teeth in another part to transmit or receive force and motion. Cams - a disk or cylinder having an irregular form such that its motion, usually rotary, gives to a part or parts in contact with it a specific rocking or reciprocating motion. Linkages - an assembly of four or more rods for transmitting motion, usually in the same plane or in parallel planes. Force - to drive or propel against resistanceMotion - the action or process of moving or of changing place or position; movement Energy - an adequate or abundant amount of such power Work - to be in operation, as a machine Power - ability to do or act; capability of doing or accomplishing something. Efficiency - the ratio of the work done or energy developed by a machine, engine, etc., to the energy supplied to it, usually expressed as a percentage. Gravity - the force of attraction by which terrestrial bodies tend to fall toward the center of the earth. Friction - surface resistance to relative motion, as of a body sliding or rolling.