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The rate of increase of thermo-e.m.f. with temperature at the neutral temperature of a thermocouple
Options
(a) is positive
(b) is zero
(c) depends upon the choice of the two materials of the thermocouple
(d) is negative
Correct Answer:
is zero
Explanation:
We have, e = at + bt²
de/ dt = a + 2bt
At neutral temperature,
t = – a / 2b
de/ dt = 0
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- To convert a 800 mV range millivoltmeter of resistance 40Ω into an ammeter of 100 mA
- The ratio of specific heats Cp/Cv=γ in terms of degrees of freedom (n) is given by
- A car of mass m starts from rest and accelerates so that the instantaneous
- When three identical bulbs of 60 W-200 V rating are connected in series to a 200 V
- An alternating voltage given as, V=100√2 sin100t V is applied to a capacitor
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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