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Table of Contents
Which devices provides ignition voltage and act as choke in a HPSV lamp?
The Arc tube device has a spark plug.
What is the difference between sodium vapour lamp and mercury Vapour lamp?
The light in Mercury Vapour lamp is from the same process as the light in Sodium Vapour lamp. The mechanism of light emission in a lamp is easy to understand.
What is the difference between mercury lamp and sodium lamp?
The mercury lamp has a more involved mechanism. The light from the lamp is not black. It is possible to apply. It is not possible to use sodium vapour lamps in lighting applications where the colour rendering property is important.
What is the use of sodium Vapour lamp?
The lamp uses ionized sodium and is used for street lighting. A low-pressure sodium-vapour (LPS) lamp has an inner discharge tube made of borosilicate glass which is fitted with metal electrodes and filled with neon and argon gas.
What is meant by Mercury Vapour lamp?
A lamp with an electric discharge through a low pressure of mercury is used to produce a greenish-blue light. It is used for street lighting as well as a source of ultraviolet radiation.
Is mercury a Vapour lamp?
Large areas such as streets, gyms, sports arenas, banks, and stores can be lit with mercury vapor lamps. The mercury discharge is contained in the inner tube of the bulbs.
Which of the following lamp has least operating life?
Which of the following lamps have the longest life spans?
Which of the following electric lamp has least life?
Average number of hours worked. Incandescent bulbs have a shorter lifespan than other bulbs. The light span for an average bulb is between 750 and 2,000 hours.
Which of the following lamp has highest life?
With efficacies ranging from 80 to 140 lm per watt, these lamps provide about 7 times as much light per watt as incandescent and about 2 times as much as fluorescent. The other advantages of this source are not limited to the efficacy of it. The longest life of a HPS lamp is 24,000+ hours.
Which of the following lamp does not suffer from stroboscopic effect?
Explanation: Incandescent and halogen lights don’t have the same effect as Stroboscopic lights because they are thermal radiators and have a relatively long persistence.
Which lamp has the best Colour rendering index?
Which lamp has the best colors? The CRI is the maximum for any lamp because the visual spectrum is continuous.
Which function of choke is in fluorescent tube?
Current flow is limited by the choke to the correct level. It can be used to start the lamp with a kick that forms a higher-voltage pulse.
What is the function of choke and starter in fluorescent lamp?
After a short time, the heatting filaments start emitting electrons and the circuit opens. The current flowing through the choke continues to flow because the energy in its iductance has to go somewhere to charge the capacitances.
What is function of choke in tube light?
A pure inductor is what Choke is. The properties of the insturment make it possible for it to create high voltage. The tube lights starter can be triggered by this high voltages.
What is the function of the fluorescent tube?
A fluorescent lamp, also known as a fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp. The phosphor coating on the inside of the lamp glows when short-wave ultraviolet light is produced by an electric current.
What are the functions of choke?
A choke is an inductor that blocks higher-frequency alternating currents in an electrical circuit.