Illumination The range of visual spectrum is 480nm - 1000nm. 300nm - 1000nm. 480nm - 760nm. 300nm - 760nm. 480nm - 1000nm. 300nm - 1000nm. 480nm - 760nm. 300nm - 760nm. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficiency of a fluorescence lamp is 70 lumens / watt. 60 lumens / watt. 40 lumens / watt. 30 lumens / watt. 70 lumens / watt. 60 lumens / watt. 40 lumens / watt. 30 lumens / watt. ANSWER DOWNLOAD EXAMIANS APP
Illumination The work of ballast in a fluorescent tube is to both ‘a’ and ‘b’. provide a kick start when voltage is induced. limit the flow of current. None of these. both ‘a’ and ‘b’. provide a kick start when voltage is induced. limit the flow of current. None of these. ANSWER DOWNLOAD EXAMIANS APP
Illumination Candela is the unit of which? Wavelength. Luminous flux. Luminous intensity. Frequency. Wavelength. Luminous flux. Luminous intensity. Frequency. ANSWER DOWNLOAD EXAMIANS APP
Illumination Unit of luminous flux is lux. lumens. candela. steradians. lux. lumens. candela. steradians. ANSWER DOWNLOAD EXAMIANS APP
Illumination Which lamp has the best Colour Rendering Index (CRI)? Incandescent LED Fluorescent High pressure sodium vapour Incandescent LED Fluorescent High pressure sodium vapour ANSWER DOWNLOAD EXAMIANS APP
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