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An office of 25m x 12m is illuminated by 40W incandescent lamp of lumen output 2700 lumens. The average illumination required at the work place is 200 lux. Calculate the number of lamps required to be fitted in the office. Assume utilization and depreciation factor are 0.65 and 1.25 respectively. This question has 0 answers so far.
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What are applications of electrolysis? This question has 0 answers so far.
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What are polar curves? This question has 0 answers so far.
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Explain in Fuel cell and use of electric double layer capacitor (Super capacitor) as battery bank. This question has 0 answers so far.
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Compare and give applications of different types of materials used in batteries. This question has 0 answers so far.
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Give the constructional details, principle of operation of Rechargeable Alkaline batteries. This question has 0 answers so far.
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Explain how the traction motors can be operated in parallel. This question has 0 answers so far.
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Explain the methods of braking of induction motors. How the energy returned to the power supply during regeneration. This question has 0 answers so far.
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What are different methods of sped control of induction motors above and below its base speed? Explain in detail. This question has 0 answers so far.
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Explain the procedure of starting of induction motors. How the rotating mmf is produced. This question has 0 answers so far.
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Compare between AC and DC welding. This question has 0 answers so far.
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What is the definition of welding? Explain the procedure of electric Arc Welding. This question has 0 answers so far.
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What are the advantages and demerits of eddy current heating? This question has 0 answers so far.
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Write a short note on Arc furnaces and electrodes used in it. This question has 0 answers so far.
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Give the construction and working of sodium vapor lamp. This question has 0 answers so far.
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An incandescent lamp has a filament of 0.0045 cm diameter and 90cm length. It is required to construct another lamp of similar type of work at double the supply frequency and give half the candle power. Assuming that the new lamp operates at same brilliancy, determine its suitable dimensions for its filament. This question has 0 answers so far.
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What is photometry? Discuss the comparison and measurement of candle powers. This question has 0 answers so far.
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How the dielectric losses can be minimized. This question has 0 answers so far.
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List the desirable properties of traction motors. This question has 0 answers so far.
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What are negative boosters used in traction. This question has 0 answers so far.
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What is the principle of working of resistance? List the application of resistance. This question has 0 answers so far.
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What are eddy current. How they vary with the frequency. This question has 0 answers so far.
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Distinguish between resistance and arc welding. This question has 0 answers so far.
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What are the different types of electric traction? This question has 0 answers so far.
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Define Faraday's law for electrolysis. This question has 0 answers so far.
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Which type of DC generator will you prefer for welding and why? This question has 0 answers so far.