MEASUREMENT AND INSTRUMENTATION QUIZ

PMMC type instruments normally use

Air friction damping

Fluid friction damping

None of these

Eddy current damping

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A spring-controlled moving iron voltmeter draws a current of 1 mA for full scale value of 100V. If it draws a current of 0.5 mA, the meter reading is

200 V.

25 V.

100 V.

50 V.

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YOUR ANSWER : ?

The thermocouple instrument will measure

None of these

Current

Voltage

Flux

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The multiplier and the meter coil in a voltmeter are in

Parallel

Series

None of the listed here

Series-parallel

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Assertion (A) : Precision is a necessary prerequisiteof accuracy. Reason (R) : Precision guarantees accuracy.

A is false bur R is true

A is true but R is false

Both A and R are true but R is NOT the correct explanation of A

Both A and R are true and R is the correct explanation of A

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If an inductance is connected in one arm of the bridge and resistance is the remaining three arms

None of the listed here

The bridge can always be balanced

The bridge cannot be balanced

The bridge can be balanced if the resistance have some specific values

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An analog ammeter is

an absolute instrument.

a controlling instrument.

a recording instrument.

an indicating instrument.

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A pressure measurement instrument is calibrated between 10 bar and 260 bar. The scale span of the instrument is

260 bar.

270 bar.

10 bar.

250 bar.

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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

3.33 %.

2 %.

2.66 %.

1 %.

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A DC potentiometer is the best means available for the measurement of DC voltage because

It is based on null balance technique.

The precision in measurment is independent of the type of the defector used.

It is possible to standardize before a measurement is undertaken.

None of above.

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