ILLUMINATION - Quiz

1) Which chemical composition powder gives green colour light in neon sign lamp?

Zinc silicate Calcium tungstate Cadmium borate Magnesium tungstate

2) Which position the MA type HPMV lamp is to be hung for lighting?

Horizontally Vertically Inclined Any position

3) Which colour light sodium vapour lamp gives?

Yellow White Blue white Blue

4) Which part of sodium vapour lamp fitting provides the ignition voltage initially and acts as a choke for limiting the current subsequently?

Ignitor Leak transformer Capacitor Thermal starter

5) Which lamp acts only as switch instead of giving light?

LED Miniature lamp Flasher Carbon filament lamp