What is the purpose of a ballast in a fluorescent lamp circuit?

Write any four safety measures and precautions to be followed for a special purpose lamp.
Answer : Here are four safety measures and precautions to follow when using a special-purpose lamp: 1. **Proper Ventilation**: Ensure the lamp is used in a well-ventilated area, especially if it's a ... the specifications for the lamp. Using incorrect power can lead to lamp failure or cause a safety hazard....

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Describe the control of a single lamp from three places. Draw the relevant circuit diagram.

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Explain control of a single lamp from four places. Draw the relevant circuit diagram.

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Draw circuit diagram for one lamp controlled with one switch.

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What is a LED tube vs. a traditional fluorescent tube?

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How does a vacuum fluorescent display (VFD) work?

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How does an LED compare to fluorescent lighting?

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Which lamp is used in the Newton-Ring experiment?

Which lamp is used in the Newton-Ring experiment?
Answer : In the Newton's rings experiment, a **monochromatic light source** is typically used. This is because the interference pattern, which forms the rings, depends on the wavelength of light. Using ... . The monochromatic nature of the light helps in observing clear and well-defined Newton's rings....

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Describe the following energy conservation techniques in lighting system: i) replacing lamp source ii) using light control gear.

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A workshop measures 10m × 25m. The shop is illuminated by 24 lamps of 200 watts each. The lumen efficiency of each lamp is 15 lumens per watt. Depreciation factor is assumed to be 0.8 and a coefficient of utilization 0.5. Determine the illumination on the working plane.

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A uniform illumination of 150 lux is to be obtained on the floor of a room measuring 15m x 15m by arranging electric lights suitably. Calculate the number of lamps and wattage of each lamp if lamp efficiency is 20 lumens/watt. Assume and write suitable values of constants required for this calculation.

A uniform illumination of 150 lux is to be obtained on the floor of a room measuring 15m x 15m by arranging electric lights suitably. Calculate the number of lamps and wattage of each ... lamp efficiency is 20 lumens/watt. Assume and write suitable values of constants required for this calculation.

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