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Measurement and Instrumentation

Measurement and Instrumentation
How many time-base circuits does a dual face CRO can have?

 3.
 1.
 2.
 4.

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Measurement and Instrumentation
Comparison methods are used

 because they are most simple.
 when a high accuracy of measurement is required.
 because they take least time in measurement.
 because they are expensive.

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Measurement and Instrumentation
A megger is usually

Moving iron type instrument
Hot-wire type instrument
Electro-static type instrument
Moving coil type instrument

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Measurement and Instrumentation
A voltmeter using thermocouple measures

  rms value.
 Average value.
 Peak to peak value.
 Peak value.

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Measurement and Instrumentation
Piezoelectric effect is carried out in

  crystal filter.
  constant k prototype.
  m derived.
  composite filter.

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Measurement and Instrumentation
A thermometer having first order dynamics is subjected to a sudden temperature change of 30oc to 150oc. If it has he time constant of 5 sec, what temperature will be indicated by after 5 sec?

 105.6o.
 63.25o.
 150o.
 30o.

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