measures the temperature difference between two points. The working is based on
ID: 2074445 • Letter: M
Question
measures the temperature difference between two points. The working is based on the thermoelectric effect. The thermoelectric principle of a effect is the direct conversion of temperature differences to e a) Thermocouple b) Peltier effect c) Glass thermometer d) Seebeck effect e) None of the above electric potential and vice v 2. The is the generation ofheat flux due to the flow ofcurrent along a conductor. HINT: ()I) a) Glass thermometer b) Thermocouple c) Peltier effect d) Seebeck effect e) None of the above 3. The effect is the conversion of temperature differences directly into electricity The effect is that, between two different metals or semiconductors, in the presence of a temperature difference an electrical potential is created, which in turn causes a continuous electrical current along the conductor if they form a complete loop a) Glass thermometer b) Thermocouple c) Peltier d) Seebeck e) None of the above Glass thermometer is based on volumetric expansion of a fluid: a) True b) False 4. 5. The most common metal used in a glass thermometer is:Explanation / Answer
SEEBACK EFFCTS
when two junctions of thermo-couple are placed at different temperature, then an emf will be produced in thermo-couple which will be proportional to the temperature difference.
Peltier Effect
It is reverse of Seeback effect. According to this,effct when an electric current is passed through thermo-couple ,Temperataure differenceis produced (one end become hot while other become cold.)
1. Thermocouple
2. Peltier Effect
3 Seeback
4 True ( Reference www.chemrat.com/ChemHog2/Industrial%20Control%20Systems_files/thermometers.doc )
5 Mercury
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