MEASUREMENT AND INSTRUMENTATION QUIZ

Systematic errors are

observational errors.

environmental errors.

instrument errors.

All of these

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_______ instruments are those which measure the total quantity of the electricity delivered in a particular time.

Recording

Indicating

Integrating

Absolute

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The difference between the measured value and the true value is called

relative error

gross error

probable error

absolute error

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A moving coil ammeter has a uniform scale with 50 division and gives a full scale reading 10 A. The instrument can read up to (1/5)th of a scale division with a fair degree of certainty. What is the resolution of the instrument in mA?

25 mA.

80 mA.

40 mA.

50 mA.

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When using ohmmeter, applied voltage is to be disconnected from the circuit because

None of these

Voltage source will increase resistance

The ohmmeter has its own internal battery

Current will decrease resistance

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To measure high frequency currents, we mostly use ______ ammeter.

Dynamometer

Moving iron

Hot wire

Thermocouple

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An analog ammeter is

a controlling instrument.

an indicating instrument.

an absolute instrument.

a recording instrument.

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An instrument to be used for measurement and control should preferably have

Dead zone and dead time

A highly damped response

Non-linear output

Linear output and fast response

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Resistance of a VARISTOR varies with

Current

Voltage

Temperature

Both Voltage and Temperature

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What is the expression for acceleration?

Change in velocity / time

Mass x acceleration

Force x displacement

Mass x velocity

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