Measurement and Instrumentation
A sinusoidal signal waveform, when observed on an oscilloscope, has a peak to peak amplitude of 6 cm. If the vertical sensitivity setting is 5 v/cm, then rms value of the voltage will be

  10.6 V.
 12.6 V.
 15 V.
 11.1 V.

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

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

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