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Q. Why nichrome is used as heating element in electric heating devices?
Nichrome, an alloy of nickel as well as chromium is used as the heating element for the following reasons.
(1) It has high precise resistance
(2) It has elevated melting point
(3) It is not easily oxidized
Q. Define Specific Gravity? Answer:- Specific Gravity SG is a unit fewer quantities that gives the scientist or engineers an idea of how dense a substance is compared to w
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