Measurement and Instrumentation
A slide wire potentiometer has 10 wires of 1 m each. With the help of a standard voltage source of 1.018 V it is standardised by keeping the jockey at 101.8 cm. If the resistance of the potentiometer wires is 1000 ohm, then the value of the working current will be

 1mA.
 0.5 mA.
 100 mA.
 10 mA.

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

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

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