PROCESS CONTROL AND INSTRUMENTATION QUIZ

In second order underdamped system,

Decay ratio = overshoot

Decay ratio = (overshoot)²

Overshoot increases for increasing damping co-efficient

Large damping co-efficient means smaller damping

TRUE ANSWER : ?
YOUR ANSWER : ?

Concentration of sugar solution can be determined by the

Emission spectroscopy

Flame photometry

Oscillometry

Polarimetry

TRUE ANSWER : ?
YOUR ANSWER : ?

The operation of a rotameter is based on

Pressure at a stagnation point

Rotation of a turbine

Variable flow area

Pressure drop across a nozzle

TRUE ANSWER : ?
YOUR ANSWER : ?

Platinum resistance thermometer is the international standard for temperature measurement between

13.81°K to 903.9°K

Neither A nor B

Triple point of hydrogen and freezing point of antimony

Both A and B

TRUE ANSWER : ?
YOUR ANSWER : ?

Polarograph is meant for the analysis of

Solids

Miscible liquids

Gaseous mixture

Isotopes

TRUE ANSWER : ?
YOUR ANSWER : ?

Phase margin is equal to

180° - phase lag

Phase lag - 180°

Phase lag + 180°

Phase lag + 90°

TRUE ANSWER : ?
YOUR ANSWER : ?

In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the __________ variable.

Load

None of these

Controlled

Manipulated

TRUE ANSWER : ?
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Minute depression of freezing point of a liquid solvent on addition of a solid solute can be best measured by a

Mercury thermometer

Beckman thermometer

Bimetallic thermometer

Dilatometer

TRUE ANSWER : ?
YOUR ANSWER : ?

Temperature measuring instruments are standardised mostly with __________ points of pure substances.

Neither A nor B Here

Both A & B Here

Melting

Boiling

TRUE ANSWER : ?
YOUR ANSWER : ?

Thermisters which have a very high temperature co-efficient of resistivity belong to the class of solid called

Conductors

Semi conductors

Insulators

Dielectrics

TRUE ANSWER : ?
YOUR ANSWER : ?

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