PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoExplain the following.
a. Why is the tungsten used almost exclusively for filament of electric lamps?
Tungsten is commonly used as a filament in electric bulbs because of its properties. Those are
(i) It has .
(ii) It has a .
(iii) It is not easily .
b. Why are the conductors of electric heating devices, such as bread-toasters and electric irons, made of an alloy rather than a pure metal?
The conductors of electric heating devices are made of alloys rather than a pure metal because it has , and are not easily .
and is preferred as a heating element in electrical appliances such as bread-toasters and electric irons.
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