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EasyAssistant Engineer (Electrical), Class-2, Road and Building Department2025✓ Editorial રીતે ચકાસેલ
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નવી સ્ટ્રીટ લાઇટિંગ પ્રોજેક્ટ્સ માટે હાલમાં કઈ લેમ્પ ટેકનોલોજી સૌથી વધુ ઊર્જા-કાર્યક્ષમ અને વ્યાપકપણે અપનાવવામાં આવી છે?

⚑ સમસ્યા રિપોર્ટ કરો

જવાબ, અનુવાદ, ઇમેજ અથવા સોર્સમાં ભૂલ જણાય તો editorial review માટે મોકલો.

રિપોર્ટ મોકલવા Sign in કરો
જવાબ અને સમજણ
સાચો જવાબD. લાઇટ એમિટિંગ ડાયોડ (LED)

ઝડપી સમજણ

LED luminaires are the dominant high-efficiency choice for new street-lighting projects because they provide high luminous efficacy, long life, controllability, good optical directionality and lower maintenance compared with legacy discharge lamps.

ફોર્મ્યુલા / મુખ્ય સંબંધ

Energy use ≈ lighting power × operating hours
Higher luminaire efficacy (lm/W) → less electrical power for required light output

વિગતવાર સમજણ

Concept & Reasoning

HPS, mercury-vapor and metal-halide technologies were widely used historically, but LED systems reduce energy and maintenance costs and support dimming/remote controls. Actual performance depends on luminaire efficacy, optics, thermal design and driver quality.

How to Solve It in the Exam

Modern new street lighting → LED.

Important Exam Point

Compare complete luminaire performance, not only lamp wattage.

Related Revision Path

This question sits in the revision path Building Electrical Services → Lighting → Street Lighting .

ઝડપી ટ્રિક

Modern new street lighting → LED.

સામાન્ય ભૂલ

Selecting HPS because it was historically common and efficient among discharge lamps.

પરીક્ષા ટિપ

Compare complete luminaire performance, not only lamp wattage.

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87કન્ટેન્ટ ગુણવત્તા

પાછલી પરીક્ષામાં પૂછાયેલ

Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 292
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 292
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 292
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 292
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 292
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 292
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 292
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 292
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 292
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 292

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