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The thermo e.m.f. E in volts of a certain thermocouple is found to vary with temperature difference θ in ⁰C between the two junctions according to the relation
E = 30θ – θ² / 15
The neutral temperature for the thermocouple will be
Options
(a) 30⁰C
(b) 450⁰C
(c) 400⁰C
(d) 225⁰C
Correct Answer:
225⁰C
Explanation:
E = 30θ – θ² / 15
For neutral temperature, dE/ dθ = 0
0 = 30 – 2/15 . θ
θ = 15 x 15
= 225⁰C
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Spectrum of X-rays is
- Two masses of 9 g and 6 g are connected with a string which is passing over a frictionless
- A planar coil having 12 turns carries 15 A current. The coil is oriented with respect
- The height of the dam, in an hydroelectric power station is 10 m. In order to generate
- Two wires of the same dimensions but resistivities p1 and p2 are connected in series
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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