Process control and measurement Quiz

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

1.

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

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.

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

5.

Working principle of radiation pyrometer is based on the

Kirchoffs law

Wien's law

Stafan-Boltzman law

Seebeck effect

6.

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

Dead zone

Reproducibility

Static error

Time lag

7.

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

thermal conductivity meter

photo electric cell

polarograph

chromatograph

8.

Load cells are used for the measurement of

stress

weight

velocity

strain

9.

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

10.

Flapper nozzle is used in a/an __________ controller.

electronic

hydraulic

pneumatic

none of these

11.

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

12.

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°

13.

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

bulb

pointer

bourdon tube

none of these

14.

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.

15.

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.

16.

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

17.

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

32°R

492°R

273°K

18.

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

unit step

impulse

frequency

none of these

19.

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

Sensitivity

Dead zone

Reproducibility

Fidelity

20.

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

High fidelity

High measuring lag

High drift

Poor reproducibility

Welcome to your Quiz.

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

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

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

The operation of a rotameter is based on

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

Working principle of radiation pyrometer is based on the

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

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

Load cells are used for the measurement of

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

Flapper nozzle is used in a/an __________ controller.

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

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

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

Pick out the first order system from among the following.

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

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

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

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

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

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

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Collection of PLC Digital Signal Calculators for Industrial Automation

Origin of instrumentation.

What is analog and digital signal?

Basics of Electrical.

Basic Electrical Laws

What are capacitor, resistor and inductor?

Welcome to your Quiz.

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

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

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

The operation of a rotameter is based on

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

Working principle of radiation pyrometer is based on the

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

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

Load cells are used for the measurement of

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

Flapper nozzle is used in a/an __________ controller.

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

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

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

Pick out the first order system from among the following.

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

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

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

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

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

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

Leave a Reply Cancel reply

Collection of PLC Digital Signal Calculators for Industrial Automation

Origin of instrumentation.

What is analog and digital signal?

Basics of Electrical.

Basic Electrical Laws

What are capacitor, resistor and inductor?

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