Measurement and Instrumentation
A metal strain gauge has a gauge factor of two. Its nominal resistance is 120 ohms. If it undergoes a strain of 10-5, the value of change of resistance in response to the strain is

 0.0024 Ohm.
 240 Ohm.
 0.0012 Ohm.
 120 Ohm.

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Measurement and Instrumentation
In AC circuits, the connection of measuring instruments cause loading effect errors which may effect

 magnitude, phase and waveform of the quantity being measured.
 both of above.
 only the magnitude of the quantity being measured.
 only phase of the quantity being measured.

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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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