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

1.

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

2.

The operation of a rotameter is based on

3.

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

4.

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

5.

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

6.

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

7.

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

8.

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

9.

Flapper nozzle is used in a/an __________ controller.

10.

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

11.

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

12.

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

13.

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

14.

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

15.

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

16.

Pick out the first order system from among the following.

17.

Working principle of radiation pyrometer is based on the

18.

Load cells are used for the measurement of

19.

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

20.

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


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