Measurement and Instrumentation
Piezoelectronic accelerometer

 Should use a monitoring source at low input impedance.
 Has a low natural frequency.
 Should be used for low frequency.
 Should be used for high frequencies above 100 Hz.

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Measurement and Instrumentation
Consider the following statement - 1. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil. 2. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the voltage coil circuit.

 Both 1 and 2 are true.
  1 is false but 2 is true.
 1 is true but 2 is false.
 Both 1 and 2 are false.

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