Measurement and Instrumentation
If an inductance L is connected in one arm of bridge and resistance R1, R2, R3 in other three arms

 The bridge can be balanced.
 The bridge is balanced for some specified value of R1, R2, R3.
 The bridge is balanced for some specified value of frequency.
 The bridge can not be balanced.

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Measurement and Instrumentation
In measurement system, the function of the signal manipulating elements is to

 to perform non liner operation like clipping filtering, chopping and clamping.
 to perform linear operation like addition and multiplication.
 change the magnitude of the input signal while retaining its identity.
 change the quantity under measurement to an analogues signal.

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