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In most practical construction of alternator, it is installed with a stationary armature winding and a rotating field unlike in the case of DC generator where the arrangement is exactly opposite. This modification is made to cope with the very high power of the order of few 100 Megawatts produced in an AC generator contrary to that of a DC generator.
2015-10-20 GUJARAT TECHNOLOGICAL UNIVERSITY ELECTRICAL ELECTRONICS ENGINEERING (08) ELECTRICAL ENGINEERING (09) AC MACHINES SUBJECT CODE: 2140906 B.E. 4th SEMESTER Type of Course: Engineering Science (Electrical) Prerequisite: Elements of Electrical Engineering Rationale: The course will
2010-7-29 Figure 2-1: Schematic Diagram of Vapor Compression System.....6 Figure 2-2: Pressure – Enthalpy Diagram for Vapour Compression System ... Table 3-2: Effect of Evaporator and Condenser Temperatures on Refrigeration Machine Performance.....33 Table 3-3: Heat Ingress into Air-conditioned Space through Open Doors .....35 Table 3
2015-2-9 Frames and Machines Definitions • Effort: Force required to overcome the resistance to get the work done by the machine. • Mechanical Advantage: Ratio of load lifted (W) to effort applied (P). Mechanical Advantage = W/P • Velocity Ratio: Ratio of the distance moved by the effort (D) to the distance moved by the load (d) in the same