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

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Measurement and Instrumentation
The measurment of very low and very high frequencies is invariably done using a frequency counter in which one of the following?

 Frequency measurment modes only.
  Period and frequency measurement modes respectively.
 Frequency and period measurment modes, respectively.
 Period measurment modes only.

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