Wheatstone Bridge Model and its working :
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Wheatstone Bridge : The device uses for the measurement of minium resistance with the help of comparision method is known as the wheatstone bridge .the value of unknown resistance is determined by comparing it with the known resistance.
PRINCIPLE : The wheat stone bridge works on the principle of null deflection i.e the ratio of their resistances are equal , and no current flowes through the galvanometer.
USES : To Measure an unknown resistance. The wheatstone bridge is only used fordeterminig the medium resistance . For measuring the high resistance the sensitive ammeter is used in the circuit.
Limitation of wheat stone bridge : The wheatstone bridge gives inaccurate reading if it is unbalanced . The bridge measure resistance from few ohms to megohms.
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Please post on mechanical engineering basic topics from SOM & FLUID MACHINERY
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