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Measurement and Instrumentation

Measurement and Instrumentation
An ammeter of range 0-25 A has a guaranteed accuracy of 1% of full-scale reading. The current measured by the ammeter is 5 A. The limiting error in the reading is

 3%
 5%
 6%
 4%

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Measurement and Instrumentation
The resistance of a circuit is found by measuring current flowing and the power fed into the circuit. If the limiting errors in the measurement of power and current are ± 1.5% and ± 1.0% respectively, the limiting error in the measurement of resistance

 ± 1.5%
 ± 1%
 ± 3.5%
 ± 2.5%

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Measurement and Instrumentation
A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as

 1000 rev/KWh.
 960 rev/KWh.
 3750 rev/KWh.
 3600 rev/KWh.

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Measurement and Instrumentation
In eddy current damping, disc or former is made of a material that is a

Conductor but non magnetic
Non conductor and non magnetic
Non conductor but magnetic
Conductor but magnetic

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Measurement and Instrumentation
The main advantage of Anderson bridge over Maxwell bridge is that

 attaining balance condition is easier.
 measures high Q inductors.
  reduction of the cost.
 balance equation independent of frequency.

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Measurement and Instrumentation
Commonly used standard capacitor is

Multiplate parallel plate type
Electrostatic type
Concentric cylindrical type
Spherical type

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MORE MCQ ON Measurement and Instrumentation

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