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Anna University Previous Year Question Papers For EEE 4th sem [1] Define the term synchronous speed [Dec-2003] For synchronous machines there exists a fixed relationship between number of poles P, frequency (f) and the speed of the machine. The speed of the synchronous machine for the given number of poles and the rated frequency is called the synchronous speed mentioned as NS. [2] Write an expression for synchronous speed (Dec-2004) An expression for synchronous speed is NS = 120f/P. Where f = frequency P = No of poles of the machine. [3] What does speed voltage mean? (Dec-2007) When the magnetic flux is constant as well as stationary and the coil rotates to cut the flux then EMF gets induced due to relative speed between flux and coil. This EMF is called speed EMF, rotational EMF or dynamically induced EMF. [4] Mention the factors on which hysteresis loss depends (Dec-2008) The hysteresis loss is directly proportional to the area under the hysteresis curve ie area of the hysteresis l...

Electric Energy Generation Utilisation Interview Questions & Answers If you are preparing for a technical interview for a lighting systems related products(LED, Lamps etc) company, then you have landed in a correct page.  This post will serve to refresh the Lighting concepts, illuminations, related laws and important terms.  Here we had collected some of frequently asked questions related to illumination.  In addition to that we had added Anna university previous years questions on EEE 8th sem paper Electric Energy Generation Utilisation [Paper code EE1451].  [1] Define luminous flux It is defined as the total quantity of light energy emitted per second from a luminous body.  It is represented by symbol F and is measured in lumens.  The conception of luminous flux helps us to specify the output and efficiency of a given light source. [2] What is meant by luminance? It is defined as the luminous per unit projected area of either a surface source of ...