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Measurement and Instrumentation
A 0 - 100 V voltmeter has a guaranteed accuracy of 2 % of full scale reading. The voltage measured by the voltmeter is 75 V. The limiting error is in percentage
1 %.
2 %.
2.66 %.
3.33 %.
1 %.
2 %.
2.66 %.
3.33 %.
Answer
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Related Question
Measurement and Instrumentation
In measurement system, the function of the signal manipulating elements is to
to perform linear operation like addition and multiplication.
to perform non liner operation like clipping filtering, chopping and clamping.
change the quantity under measurement to an analogues signal.
change the magnitude of the input signal while retaining its identity.
to perform linear operation like addition and multiplication.
to perform non liner operation like clipping filtering, chopping and clamping.
change the quantity under measurement to an analogues signal.
change the magnitude of the input signal while retaining its identity.
Answer
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Measurement and Instrumentation
The moving coil-meters, damping is provided by
eddy current disk.
the coil spring attached to the moving.
the aluminium frame of the coil.
damping vane in the airtight chamber.
eddy current disk.
the coil spring attached to the moving.
the aluminium frame of the coil.
damping vane in the airtight chamber.
Answer
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Measurement and Instrumentation
The transfer instrument which is used for standardization of a polar type AC potentiometer is
a thermal instrument.
a dynamometer instrument.
a moving coil instrument.
an electrostatic instrument.
a thermal instrument.
a dynamometer instrument.
a moving coil instrument.
an electrostatic instrument.
Answer
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Measurement and Instrumentation
The effect of load resistance is important in measurement of
resistance of shunt winding.
resistance of shunt.
both A and B.
resistance of ammeter.
resistance of shunt winding.
resistance of shunt.
both A and B.
resistance of ammeter.
Answer
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Measurement and Instrumentation
In DC potentiometer measurments, a second reading is often taken after reversing the polarities of the DC supply and the unknown voltage and the average of the two reading is taken. This is with a view of eliminate the effects of
Ripples of the DC supply.
Errorneous standardisation.
Stray magnetic fields.
Stray thermal emfs.
Ripples of the DC supply.
Errorneous standardisation.
Stray magnetic fields.
Stray thermal emfs.
Answer
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