Cyclopedia of Engineering; a Complete Manual of Steam and Machine Practice...ed. by a Corps of Distinguished Engineers, Techical Experts and Eminent Authorities. Editor-in-chief, Louis Derr, Τόμος 4American technical society, 1902 |
Συχνά εμφανιζόμενοι όροι και φράσεις
alternating current ammeter amperes angle arc lamp armature axis base border lines brushes cable candle power carbons center line choke coil circle circuit circular mils commutator conductors cone connected construction copper core curve cylinder diameter direct current distance dotted draw drawn dynamo edge electric electromotive force elements elevation engines equal face feeder feet figure give ground line hence horizontal plane incandescent lamp inches long induction insulation intersection iron isometric left-hand letters light lightning arrester load located machine magnetic mains method motor ohms parallel passing pencil perpendicular piece placed PLATE points poles position potential prism Problem projection pyramid radius rail resistance right-hand rotary converter shade lines shown in Fig side speed square station straight line supplied surface switch switchboard T-square tangent terminals tion transformer triangle trolley wire usually vertical plane voltage volts wattmeter watts wheel
Δημοφιλή αποσπάσματα
Σελίδα 5 - CIRCLES. A circle is a plane figure bounded by a curved line, every point of which is equally distant from a point within called the center. The curve which bounds the circle is called the circumference.
Σελίδα 8 - A regular pyramid is one whose base is a regular polygon and whose vertex lies in the perpendicular erected at the center of the lsi.se.
Σελίδα 10 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.
Σελίδα 7 - In order to obtain accurate measurements each degree is divided into 60 equal parts called minutes and each minute into 60 equal parts called seconds.
Σελίδα 9 - A cone is a solid bounded by a conical surface and a plane which cuts the conical surface. The plane is called the base and the curved surface the lateral area.
Σελίδα 17 - Proof. If two straight lines are cut by a third making the corresponding angles equal, the lines are parallel.
Σελίδα 38 - In Fig. 5 draw all arcs first and then draw the straight lines meeting these arcs. It is much easier to draw straight lines meeting arcs, or tangent to them, than to make the arcs tangent to straight lines. As this exercise is difficult, and in all mechanical and machine drawing arcs and tangents are frequently used, the beginner is advised to draw this exercise several times.
Σελίδα 25 - As in the two preceding problems, draw the major and minor axes, UV and X Y. Take a slip of paper having a straight edge and mark off CB equal to one-half the major axis, and DB one-half the minor axis.