To Explain: The disadvantage of these bulb.
Answer to Problem 47R
One disadvantage it is warm source of light and hence requires air conditioning to cool the room and it has higher operating cost.
Explanation of Solution
Introduction:
An incandescent light bulb, incandescent lamp or globe of incandescent light is an electric light with a wire filament that is heated until it glows. The filament is locked into a bulb to protect the filament against oxidation. Current is supplied by terminals or wires in the glass embedded in the filament.
Disadvantages of incandescent bulb are it is energy inefficient, it has very short lamp life time i.e. abouthours typically, it is warm source of light and hence requires air conditioning to cool the room and it has higher operating cost, It is very fragile and hence needs to be handled very carefully, It generates low lumen per watt. Ordinary incandescent bulbs produces abouttolumens per watt. This means it has lower efficacy.
Conclusion:
Hence, one disadvantage it is warm source of light and hence requires air conditioning to cool the room and it has higher operating cost.
Chapter 12 Solutions
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