ILLUMINATION - Practice Mode

1) Which is coated in the tungsten filament of fluorescent tube lamp?

Barium and strontium oxides Mercury Sodium Phosphor

Correct Answer: Barium and strontium oxides

2) What is the expansion of CFL?

Compressed filament lamp Cathode filament lamp Common fluorescent lamp Compact fluorescent lamp

Correct Answer: Compact fluorescent lamp

3) How strohoscopic effect is prevented in industrial twin tube light fitting?

By connecting a capacitor parallel to supply By connecting a capacitor parallel to each tube By connecting a capacitor series with one tube By connecting a capacitor a series with both tube light

Correct Answer: By connecting a capacitor series with one tube

4) Which type of fluorescent tube lamps are used for dimming and flashing circuits?

Instant start fluorescent lamp Rapid start fluorescent tube lamp Fluorescent lamp single tube lamp Fluorescent lamp double tube lamp

Correct Answer: Rapid start fluorescent tube lamp

5) Which is cold cathode lamp?

Mercury vapour lamp Fluorescent tube lamp Halogen lamp Neon lamp

Correct Answer: Neon lamp

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