Illumination The range of visual spectrum is 300nm - 1000nm. 300nm - 760nm. 480nm - 1000nm. 480nm - 760nm. 300nm - 1000nm. 300nm - 760nm. 480nm - 1000nm. 480nm - 760nm. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamps can be directly connected to a solar cell? Incandescent LED Metal Halide Compact Fluorescent Incandescent LED Metal Halide Compact Fluorescent ANSWER DOWNLOAD EXAMIANS APP
Illumination The work of ballast in a fluorescent tube is to provide a kick start when voltage is induced. None of these. limit the flow of current. both ‘a’ and ‘b’. provide a kick start when voltage is induced. None of these. limit the flow of current. both ‘a’ and ‘b’. ANSWER DOWNLOAD EXAMIANS APP
Illumination In illumination technology total lumens emitted by source / total lumens available after waste of light is equal to beam factor. absorption factor. utilization factor. waste light factor. beam factor. absorption factor. utilization factor. waste light factor. ANSWER DOWNLOAD EXAMIANS APP
Illumination Solid angle is expressed in terms of steredians. radians. degree. radians / meter. steredians. radians. degree. radians / meter. ANSWER DOWNLOAD EXAMIANS APP
Illumination What is the ratio of illuminance at a point 5m just below a lamp emitting 100 candelas and at a point 5m away from the first point on the same horizontal plane? 2:1 1: 2√2 2√2 : 1 1:2 2:1 1: 2√2 2√2 : 1 1:2 ANSWER DOWNLOAD EXAMIANS APP
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