An emf of 0.9 V is generated when the temperature difference hot and cold junction of thermocouple is 75 K. Assuming that the thermo emf is directly proportional to the temperature difference, the extent to which the thermo emf will change when the cold junction is heated up by 15 K is
a)
10%
b)
20%
c)
40%
d)
60%
An emf of 0.9 V is generated when the temperature difference hot and cold junction of thermocouple is 75 K. Assuming that the thermo emf is directly proportional to the temperature difference, the extent to which the thermo emf will change when the cold junction is heated up by 15 K is
a)
10%
b)
20%
c)
40%
d)
60%
Question ID - 151510 | SaraNextGen Top Answer
An emf of 0.9 V is generated when the temperature difference hot and cold junction of thermocouple is 75 K. Assuming that the thermo emf is directly proportional to the temperature difference, the extent to which the thermo emf will change when the cold junction is heated up by 15 K is
a)
10%
b)
20%
c)
40%
d)
60%
|
An emf of 0.9 V is generated when the temperature difference hot and cold junction of thermocouple is 75 K. Assuming that the thermo emf is directly proportional to the temperature difference, the extent to which the thermo emf will change when the cold junction is heated up by 15 K is |
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|
a) |
10% |
b) |
20% |
c) |
40% |
d) |
60% |
1 Answer
127 votes
Answer Key / Explanation : (b) -
|
(b) Here,
As or % decrease in thermo emf
|
temperature difference 
K
127 votes
Answer Link
127