PROCESS CONTROL AND INSTRUMENTATION QUIZ

Turbine flow meters are suitable for

Both B and C

Aerospace and in air borne applications

Very limited flow ranges

Cryogenic flow measurements

TRUE ANSWER : ?
YOUR ANSWER : ?

Concentration of sugar solution can be determined by the

Emission spectroscopy

Oscillometry

Flame photometry

Polarimetry

TRUE ANSWER : ?
YOUR ANSWER : ?

Stabilising time for the controllers is the time required for the response to reach __________ percent of its ultimate value.

95

87.5

63.2

100

TRUE ANSWER : ?
YOUR ANSWER : ?

The amplitude ratio for the sinusoidal response of __________ is < 1.

None of these

Second order system

Transportation lag

First order system

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Thermal conductivity meter

Chromatograph

Polarograph

Photo electric cell

TRUE ANSWER : ?
YOUR ANSWER : ?

Thermistors are used in __________ devices.

Voltage measuring

Both B & C

Temperature measuring

Temperature compensating

TRUE ANSWER : ?
YOUR ANSWER : ?

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

< 2 (gauge)

< atmospheric

> 2 (gauge)

> 10 (absolute)

TRUE ANSWER : ?
YOUR ANSWER : ?

Phase lag of the frequency response of a second order system to a sinusoidal forcing function

Is 30°

Is 90° at the most

Approaches 180° asymptotically

Is 120°

TRUE ANSWER : ?
YOUR ANSWER : ?

The unit step response of the transfer function 1/(s² + 2s + 3)

Has a non-zero slope at the origin

Has a damped oscillatory characteristics

Is unstable

Is overdamped

TRUE ANSWER : ?
YOUR ANSWER : ?

Thermocouple in a thermal well behaves as a true

Multiple first order system

First order system

Second order system (underdamped)

Second order system (overdamped)

TRUE ANSWER : ?
YOUR ANSWER : ?

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