Illumination Technology - Quiz1 - S6 EEE

Twin tube connection is used for

• Avoid shadow

• Avoid glare

• Avoiding stroboscopic effect

• Reduce electrical energy

In electromagnetic spectrum the visible light region lies between

• 380 nm to 800 nm

• 50 nm to 100 nm

• 800 nm to 1000 nm

• below 50 nm

Human eye is most sensitive to ___ with same intensiy

• Violet region

• Green region

• Reg region

• Equal sensitivity in all light region

Color temperature scale is more for

• Day light fluorescent lamp

• Gas filled filament lamp

• White fluorescent lamp

• Candle flame

Direct lighting provide maximum light flux

• Equal to upward and downwards

• No such restriction

• downwards

• Upwards

Define disability glare.

VCP in connection with glare stands for

• Visual comfort probability

• Visual capture probability

• Very comfortable position

• Visually correlated probability

UGR is

Which UGR is most comfortable

• 40

• 25

• 16

• 13

Define Lambert's cosine law in illumination