Illumination Which lamps can be directly connected to a solar cell? Metal Halide Compact Fluorescent Incandescent LED Metal Halide Compact Fluorescent Incandescent LED ANSWER DOWNLOAD EXAMIANS APP
Illumination The work of ballast in a fluorescent tube is to both ‘a’ and ‘b’. limit the flow of current. None of these. provide a kick start when voltage is induced. both ‘a’ and ‘b’. limit the flow of current. None of these. provide a kick start when voltage is induced. ANSWER DOWNLOAD EXAMIANS APP
Illumination Unit of luminous flux is candela. lux. lumens. steradians. candela. lux. lumens. steradians. ANSWER DOWNLOAD EXAMIANS APP
Illumination What will be the number of lamps, each having 300 lumens, required to obtain an average illuminance of 50 lux on a 4m × 3m rectangular room? 2 5 4 6 2 5 4 6 ANSWER DOWNLOAD EXAMIANS APP
Illumination The illumination at a point 5 meters below a lamp in 6 lux. The candle power of the lamp is 200. 30 150. 140. 200. 30 150. 140. ANSWER DOWNLOAD EXAMIANS APP
Illumination Luminous efficiency of a fluorescence lamp is 60 lumens / watt. 70 lumens / watt. 30 lumens / watt. 40 lumens / watt. 60 lumens / watt. 70 lumens / watt. 30 lumens / watt. 40 lumens / watt. ANSWER DOWNLOAD EXAMIANS APP