#141📘 EE Pocket Reviewer RojasEasy
In a fluorescent tube, a ballast resistance is connected in series with the choke under which of the following conditions?
ATo reduce the stroboscopic effect
BTo reduce radio interference
CWhen the supply frequency is low
DWhen the tube operates at dc supply
#142📘 EE Pocket Reviewer RojasEasy
What is the purpose of nitrogen or argon gas being filled in a GLS lamp?
ATo retard evaporation of tungsten filament
BTo reduce the glare
CTo improve the lamp efficiency
DTo change the color of light
#143📘 EE Pocket Reviewer RojasEasy
Which one is involved in the study of illumination?
AStudy of photometry and its applications
BStudy of lighting and wiring system
CDesign of lighting system
DCalculation of wiring sizes for various lighting fixtures
