PROCESS CONTROL AND INSTRUMENTATION QUIZ

Which of the following is the dynamic characteristics of an instrument?

Reproducibility

Fidelity

Dead zone

Sensitivity

TRUE ANSWER : ?
YOUR ANSWER : ?

Bourdon gauges are used for measuring pressure (kg/cm² )

> 10 (absolute)

< atmospheric

> 2 (gauge)

< 2 (gauge)

TRUE ANSWER : ?
YOUR ANSWER : ?

pH meter has

Two cells

One cell

No cell

Three cells

TRUE ANSWER : ?
YOUR ANSWER : ?

The unit of 'time constant' of a system is the same as that of

None of these

(time)⁻¹

Velocity

Time

TRUE ANSWER : ?
YOUR ANSWER : ?

The level of a liquid under pressure can be determined using

Air-trap system

Differential pressure manometer

Diaphragm box system

Bubbler system

TRUE ANSWER : ?
YOUR ANSWER : ?

A constant volume gas thermometer employing __________ is used to measure sub-zero (i.e., < 0° C) temperature.

Hydrogen

Nitrogen

None of these

Helium

TRUE ANSWER : ?
YOUR ANSWER : ?

Mcleoid gauge is used to measure the

Point velocity

Vacuum

Pressure

Flow rate

TRUE ANSWER : ?
YOUR ANSWER : ?

Starting temperature of optical radiation pyrometer is __________ °C.

800

400

1200

1500

TRUE ANSWER : ?
YOUR ANSWER : ?

Pick out the most suitable instrument for measuring temperature in the range of-40 to 425°C.

Radiation pyrometer

Bimetallic thermometer

None of these

Mercury thermometer

TRUE ANSWER : ?
YOUR ANSWER : ?

An amplitude ratio of 0.1 corresponds to __________ decibels.

20

-10

-20

10

TRUE ANSWER : ?
YOUR ANSWER : ?

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