MEASUREMENT AND INSTRUMENTATION QUIZ

Which devices used to measure the temperature of an object ?

Galvanometer

Thermometers

Odometer

Poteintiometer

TRUE ANSWER : ?
YOUR ANSWER : ?

The effect of load resistance is important in measurement of

resistance of ammeter.

both A and B.

resistance of shunt.

resistance of shunt winding.

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The maximum percentage error in the sum of two voltage measurements when V1 = 100V ± 1% and V2 = 80V ± 5% is

± 4%

± 3%

± 2.8%

± 6%

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YOUR ANSWER : ?

Which of the following cannot be measured by multimeters?

Frequency

Voltage

Resistance

Current

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A PMMC voltmeter is connected across a series combination of a DC voltage source V1 = 2 V and an AC voltage source V2 = 3sin4t, the voltmeters reads

2 V.

0 V.

(2 + √3/2)V.

5 V.

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The pointer of an indicating instrument should be

Either light or heavy

Very heavy

None of the listed here

Very light

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Kelvin’s double bridge is used to measure low resistance because

resistance variation due to temperature.

there is no thermo electric emf.

effect of contact and lead resistance is eliminated.

it has high sensitivity.

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In a ballistic galvanometer, the deflecting torque is proportional to

Sine of measured

The current through coil

Square-root of current through coil

Square of current through coil

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For measurement of high direct voltage, one would use _____ voltmeter.

Moving iron

PMMC

Hot wire

Electrostatic

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Dynamic errors are caused by

observational error

environmental error

human error

instrument not responding fast

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