Compare the salient features of LED and CFL based on (i) Lamp efficiency (ii) Life span. Answer : Here's a comparison of **LED** and **CFL** based on **lamp efficiency** and **life span**: ### 1. Lamp Efficiency: - **LED (Light Emitting Diode):** - **Higher Efficiency:** LEDs ... longer than **CFLs**. - **CFLs** are moderately energy-efficient and have a shorter lifespan compared to LEDs....
What is the purpose of a ballast in a fluorescent lamp circuit?
State the factors considered for selection of mounting of fluorescent lamp in residential areas.
Explain the working of fluorescent lamp.
What are the design considerations for compact SMPS? Answer : Designing a compact Switch-Mode Power Supply (SMPS) requires addressing several key factors to ensure efficiency, reliability, and size reduction. Here are the main design considerations: ### 1. ... in balancing performance, size, and cost while meeting the specific requirements of your design....
Give a comparison between LED and CFL lamps (Any four points).
What is the full form of CFL?
What is a LED tube vs. a traditional fluorescent tube?
How does a vacuum fluorescent display (VFD) work?
How does an LED compare to fluorescent lighting?
What is a LED grow lamp?
How do you wire a LED table lamp?
What is a LED road lamp?
What is a LED desk lamp?
What is a LED flood lamp?
What is a LED task lamp?
How do you create a multi-colored LED lamp?
Why does a lamp not obey Ohms law?
Does a LED lamp obey Ohm's law?
Does a LED lamp obey Ohms law?
Describe the control of a single lamp from three places. Draw the relevant circuit diagram.
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.
Illustrate with neat wiring diagram a single lamp control by two-point method.
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.
Explain control of a single lamp from four places. Draw the relevant circuit diagram.
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....
State the factors to be considered while selecting a lamp for a particular application.
Illustrate with neat wiring diagram a single lamp control by two point method.
What is the principle of slit lamp?
What is the principle of lamp test?
What is the principle of sodium lamp?
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....
How do you design an LED lamp?
If one lamp connects between two phases it will glow or not?
State the use of following: (i) Screw driver (ii) Nose pliers (iii) Wire gauge (iv) Test lamp.
Draw wiring diagram for connection of one lamp controlled from two places. State the application of this connection.
Draw circuit diagram for one lamp controlled with one switch.
Describe the following energy conservation techniques in lighting system: i) replacing lamp source ii) using light control gear.
State the selection criterion of the lamp for various purposes.
Explain the working of HPMV Lamp with neat diagram.
Define the terms incandescent and incandescent lamp.
Explain the working of HID lamp. Answer : HID (High-Intensity Discharge) lamps are a type of electric light that produces light by creating an arc between two electrodes inside a gas-filled tube. They are known for their ... ionization. Their high brightness and energy efficiency make them useful for many large-scale lighting applications....
Compare the salient features of mercury vapour lamp and sodium vapour lamp based on (i) lamp efficiency (ii) lumen output.
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