Also trace in ink, as for the purpose of producing a photoprint, a small portion of one view, on which dimensions are to be inserted. Draw to a scale of. Alternative Example 13. Electric Motor. A set of three dockyard capstans are required to be actuated by an electric motor capable, under ordinary working conditions, of exerting a pull by each capstan of 1,500 pounds at a speed of 100 feet per minute. The motor is to be of the 4-pole type, continuous current, shunt-wound for 230 volts, and to run at 650 revolutions per minute. Adopt a shaft of 3" diameter and casing of 2′ 6′′ external diameter and design and draw the rotor and stator. Also set out on a diagram the scheme of the armature and commutator connections. In addition, trace in ink, as for the purpose of producing a photo-print, a small portion of one of the views, on which dimensions are to be inserted. Draw to a scale of rd. SUBJECT III. BUILDING CONSTRUCTION. Stage 1. Before commencing your work, you must carefully read the following instructions: You are permitted to answer only seven questions. Drawings must be made on the single sheet of drawing paper supplied, beginning on the side marked with your distinguishing |