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Measurement and Instrumentation

Measurement and Instrumentation
A transducer measures a range of 0 – 200 N force with a resolution of 0.15 percent of full scale. What is the smallest change which can be measured by this transducer ?

 6.66 N
 3.33 N
 0.15 N
 0.3 N

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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

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

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Measurement and Instrumentation
For handling greater currents induction watt-meters are used in conjunction with

Power transformers
Potential transformers
Either of the above
Current transformers

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Measurement and Instrumentation
What is the expression for acceleration?

 Force x displacement
 Mass x acceleration
 Mass x velocity
 Change in velocity / time

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Measurement and Instrumentation
A high frequency AC signal is applied to a PMMC instrument. The RMS value of the AC signal is 2V, the reading of the instrument is

 2√2V.
 2V.
 Zero.
 √2V.

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Measurement and Instrumentation
A moving iron ammeter may be compensated for frequency errors by

A series inductance
Shunt capacitance
Series resistance
A shunt resistance

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