Electronics and Communication Engineering - Materials and Components - Discussion
Discussion Forum : Materials and Components - Section 9 (Q.No. 28)
28.
If temperature is increased, the temperature coefficient of a metal
Discussion:
6 comments Page 1 of 1.
Rein Bugnot said:
6 years ago
The answer is B.
Metals are ~indeed~ positive temperature coefficient, but the magnitude of that positive value decreases as temperature increases as given by α = 1/(T+To), or since at 0°, αo = 1/To; then it follows that αc = 1/(T+(1/αo)). In fact, for any material, the temperature coefficient is maximum at 0°.
Metals are ~indeed~ positive temperature coefficient, but the magnitude of that positive value decreases as temperature increases as given by α = 1/(T+To), or since at 0°, αo = 1/To; then it follows that αc = 1/(T+(1/αo)). In fact, for any material, the temperature coefficient is maximum at 0°.
Vankirk said:
6 years ago
No. The Temperature Coefficient of a certain temperature is inversely proportional to the sum between the temperature and the inferred absolute zero temperature. Tc=1/(T+To). So, the answer is B.
Rammu said:
7 years ago
You are correct, the answer should be A. Because metal is constructor so it is positive temperature coefficient.
Ravi said:
8 years ago
Yes, the answer should be A.
Jagadish said:
9 years ago
@Raj.
You are correct, the answer should be A.
You are correct, the answer should be A.
Raj said:
9 years ago
Metal is positive temperature coeff.
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