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Measurement and Instrumentation

Measurement and Instrumentation
The pointer of an indicating instrument is generally made of _______

Soft steel
Copper
Aluminium
Silver

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Measurement and Instrumentation
Schering bridge is used to measure which of the following?

  Capacitance.
 Inductance.
 Resistance.
 Frequency.

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Measurement and Instrumentation
Standardization of potentiometer is done in order that, they become

 accurate and precise.
 precise.
 accurate and direct reading.
 accurate.

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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 meter has a full-scale deflection of 90o at a current of 1 A. The response of the meter is square law. Assuming spring control, the current for a deflection at 45o will be

 0.25 A.
 0.50 A.
 0.67 A.
 0.70 A.

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Measurement and Instrumentation
When a potentiometer is used for measurement of voltage of an unknown source, the power consumed in the circuit of the unknown source under null condition is

 small.
 very high.
 ideally zero.
 high.

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