Answer / gopikrishna

WHEN DISIMILAR METALS OF DIFFERENT TEMPERATURES ARE JOINED
AN EMF IS INDUCED AT THE JUNCTION THIS IS SEEBACK EFFECT

Answer / renjith

When the junction of dissimilar metals are kept at different
temperatures,then an emf is introduced b/w both the junction.

Answer / bharathi

Two dissimilar material jointed together it is called hot
junction and kept free other end it is called cold junction.
An emf induced at cold junction it directly proportional to
temperature difference between two junctions. For example
the hot surface is in 300 deg c (hot junction) and room temp
is 30 deg c (cold junction) you will get mv which is equal
to 270 deg c.

Answer / hgh

Two dissimilar material jointed together it is called hot
junction and kept free other end it is called cold junction.
An emf induced at cold junction it directly proportional to
temperature difference between two junctions. For example
the hot surface is in 300 deg c (hot junction) and room temp
is 30 deg c (cold junction) you will get mv which is equal
to 270 deg c.
When the junction of dissimilar metals are kept at different
temperatures,then an emf is introduced b/w both the junction

Answer / rajesh

when any two dissimilar metals joined at each end ,one
junction at higher temp another at low temp ,then there
induced an emf ,thats depend on differrence between two
junction temperature

Answer / bilawal

when any two metals of different nature joind from both the
ends and then heated from on end the current is being
prodused due to the different value of electron in outer
most shell of the metals.

Answer / prasath

THE TEMPERATURE DIFFERENCE BETWEEN TWO DISSIMILAR METALS ARE JOINED AN EMF IN INDUCED AT THE JUNCTION THIS IS SEEBACK EFFECT.

Answer / manish kumar tiwari

WHEN TWO DISSIMILAR METALS ARE AT DIFFRENT TEMPRETURE ONE OF
THEM IS HOT AND ANODER COLD COMPARING TO IT AND WHEN THE
TEMPRETURE WILL INCRISE IN HOT END THEN AN E.M.F. WILL
INDUSED IN JUNCTIONOF BOTH METALS AND IT IT WILL BE IN "mv"

Answer / samira patel (itps)

IF TWO DISSIMILAR METALS ARE JOINED TOGETHER SO AS TO FORM A
CLOSED CIRCUIT ,THERE WILL BE TWO JUNCTION FORMED WHERE THEY
MEET EACH OTHER.ONE OF THE JUNCTION IS CALLED HOT JUNCTION
OR REFERENCE JUNCTION AND ANOTHER JUNCTION IS CALLED COLD
JUNCTION OR MEASURING JUNCTION.IF HOT JUNCTION IS HEATED AN
EMF IS INDUCED AND FLOWS THROUGH THE WIRE ,THAT IS MEASURED
BY A GALVANOMETER OR MULTIMETER.THIS EFFECT IS CALLED
THERMOELECTRIC EFFECT AND THIS IS FIRST OBSERVED IN 1821 BY
SEEBACK SO IT IS ALSO CALLED AS SEEBACK EFFECT.

when an eddy current probe is installed inside of a turbine or compressor in case of probe problem same as:crash of head of probe,changing the scale factor because of low measuring gap(physical gap is ok(example=1.14mm)but voltage is reduced(example=-6 volts),is any way to check the probe,when the ohm of probe is ok.thank you,(Karim Tavakoli)

1 Answers  

what are the use of belew gear in general ??

0 Answers  

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0 Answers  

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0 Answers  

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0 Answers  

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What is the role of Integral in pid control?

6 Answers  

In split range control, we will control 2 outputs with time interval. Eg :(with 4-20 ma signal, for 4-12 ma we are operating one control instrument like valve & for 12-20ma we are operating other control instrumet (other valve). If we get a signal of 15ma to first instrument (Valve 1), what will happened to the first valve, and if we get signal above 20 ma to 2 valve what will happened ?

3 Answers  

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0 Answers