Measurement and Instrumentation
It is found that 10A current passes through a resistor of 10°hms. The resistor has 5% tolerance . The error in measurement of current can be as high as 5%. What is max error in measurement of power, calculated from measured value of I and the nominal value of resistor?

100W
150W
50W
200W

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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?

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

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Measurement and Instrumentation
Which of following is not correct?

 Voltmeter should have very high resistance.
 A shunt should have a very low resistance.
 An ammeter should have a very low resitance.
  An electronic voltmeter draw appreciable current from the source.

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