MEASUREMENT AND INSTRUMENTATION QUIZ

The pointer of an indicating instrument is generally made of _______

Soft steel

Aluminium

Copper

Silver

TRUE ANSWER : ?
YOUR ANSWER : ?

Resolution of an instrument is

the maximum non linearity.

the maximum quantity it can measure.

ability to distinguish polarity.

the minimum quantity it can measure.

TRUE ANSWER : ?
YOUR ANSWER : ?

Figure show an RC potentiometer to measure AC voltage. It is desire that Vo/Vi should be independent of frequency. The value of C shoud be

0.1 µF.

0.09 µF.

11 µF.

10 µF.

TRUE ANSWER : ?
YOUR ANSWER : ?

Relative permittivity can be measured by _______ bridge

Wheatstones.

Desautys.

Schering.

Hays.

TRUE ANSWER : ?
YOUR ANSWER : ?

Comparison methods are used

because they are most simple.

when a high accuracy of measurement is required.

because they are expensive.

because they take least time in measurement.

TRUE ANSWER : ?
YOUR ANSWER : ?

Two voltmeters have the same range 0-400V. The internal impedance are 30,000 Ohms and 20,000 Ohms. If they are connected in series and 600V be applied across them, the readings are

360V and 240V

400V and 200V

One of the meters out of the range and other 100V

300V each

TRUE ANSWER : ?
YOUR ANSWER : ?

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.

TRUE ANSWER : ?
YOUR ANSWER : ?

The use of __________________ instruments is merely confined within laboratories as standardizing instrument.

indicating.

integrating.

absolute.

recording.

TRUE ANSWER : ?
YOUR ANSWER : ?

Which instrument has identical calibration for ac as well as dc values?

Induction type

Moving iron type

Hot wire type

Moving coil type

TRUE ANSWER : ?
YOUR ANSWER : ?

The resistance offered to the passage of an in-varying current by a column of mercury at the temperature of melting ice of mass 14.4521 gms of uniform cross-sectional area and length 106.3cm is

One international ohm

One ohm according to SI units

Standard ohm

One ohm according to working standards

TRUE ANSWER : ?
YOUR ANSWER : ?

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