Process control and measurement Quiz

Welcome to your Quiz.

This quiz is about Process control and Instrumentation. it contains 20 questions

1.

Which of the following is not the triple point of water?

32°R

492°R

273°K

2.

A negative gain margin expressed in decibels means a/an __________ system.

Unstable

stable

Critically damped

None of the above

3.

The operation of a rotameter is based on

pressure drop across a nozzle.

variable flow area.

rotation of a turbine

pressure at a stagnation point

4.

The closed-loop pole of a stable second order system could be

one real positive and the other real negative.

complex conjugate with positive real parts.

both real and negative.

both real and positive.

5.

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

Sensitivity

Dead zone

Reproducibility

Fidelity

6.

Pick out the first order system from among the following.

Damped vibrator.

Mercury in glass thermometer kept in boiling water.

Interacting system of two tanks in series.

Non-interacting system of two tanks in series.

7.

Working principle of radiation pyrometer is based on the

Kirchoffs law

Wien's law

Stafan-Boltzman law

Seebeck effect

8.

The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple.

iron-constantan

chromel-alumel

platinum-platinum/rhodium

None of these

9.

Smoke density of the flue gas going out of the chimney is measured by a

thermal conductivity meter

photo electric cell

polarograph

chromatograph

10.

Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference?

Thomson effect

Seebeck effect

Peltier effect

none of these

11.

Thermistor, which has high-temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an

solid semi-conductor

liquid semi-conductor

conductor

insulator

12.

Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale.

Kelvin

Reaumer

Centigrade

Farenhite

13.

The __________ of a vapor pressure thermometer is a functioning element.

bulb

pointer

bourdon tube

none of these

14.

Response of a system to a sinusoidal input is called __________ response.

unit step

impulse

frequency

none of these

15.

Which of the following is a desirable characteristic of an instrument?

High fidelity

High measuring lag

High drift

Poor reproducibility

16.

Which of the following temperature measuring instruments need not touch the object whose temperature is being measured?

Filled system thermometer

Mercury in glass thermometer

Radiation/infrared pyrometer

Thermo electric pyrometer

17.

Flapper nozzle is used in a/an __________ controller.

electronic

hydraulic

pneumatic

none of these

18.

Typical specifications for design stipulates the gain margin and phase margin to be respectively

> 1.7 and > 30°

30°

< 1.7 and < 30°

> 1.7 and < 30°

19.

Load cells are used for the measurement of

stress

weight

velocity

strain

20.

Which of the following is an undesirable dynamic characteristic of an instrument?

Dead zone

Reproducibility

Static error

Time lag

Welcome to your Quiz.

This quiz is about Process control and Instrumentation. it contains 20 questions

Which of the following is not the triple point of water?

A negative gain margin expressed in decibels means a/an __________ system.

The operation of a rotameter is based on

The closed-loop pole of a stable second order system could be

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

Pick out the first order system from among the following.

Working principle of radiation pyrometer is based on the

The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple.

Smoke density of the flue gas going out of the chimney is measured by a

Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference?

Thermistor, which has high-temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an

Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale.

The __________ of a vapor pressure thermometer is a functioning element.

Response of a system to a sinusoidal input is called __________ response.

Which of the following is a desirable characteristic of an instrument?

Which of the following temperature measuring instruments need not touch the object whose temperature is being measured?

Flapper nozzle is used in a/an __________ controller.

Typical specifications for design stipulates the gain margin and phase margin to be respectively

Load cells are used for the measurement of

Which of the following is an undesirable dynamic characteristic of an instrument?

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