PROCESS CONTROL AND INSTRUMENTATION QUIZ

Turbine flow meters are suitable for

Cryogenic flow measurements

Both B and C

Very limited flow ranges

Aerospace and in air borne applications

TRUE ANSWER : ?
YOUR ANSWER : ?

The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K(s + 1)/2(2s + 1)(3s + 1) will have a definite number of loci for variation of K from 0 to ∞. The number of loci is

3

4

2

1

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following thermocouples has the least temperature measurement range?

Copper-constantan

Chromel-alumel

Platinum-platinum/rhodium

Iron-constantan

TRUE ANSWER : ?
YOUR ANSWER : ?

The transfer function of a first order system is

S/(Ts + 1)

1/Ts

1/(Ts + 1)

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Flow rate of sludge is not measured by a/an

Both B & C

Orificemeter

Kennison nozzle

Open weir

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Boiling

Melting

Neither A nor B Here

Both A & B Here

TRUE ANSWER : ?
YOUR ANSWER : ?

Bode diagram are generated from output response of the system subjected to which of the following input?

Impulse

Step

Sinusoidal

Ramp

TRUE ANSWER : ?
YOUR ANSWER : ?

Presence of a small amount of water in the organic systems can be determined by the __________ method.

Electrical conductivity

Dielectric constant end loss factor

Emission spectroscopy

Polarimetry

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a second order instrument?

Mercury in glass thermometer with covering

None of these

Bare mercury in glass thermometer

Pressure gauge with one bellow, two tubes and a tank

TRUE ANSWER : ?
YOUR ANSWER : ?

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

None of these

Frequency

Unit step

Impluse

TRUE ANSWER : ?
YOUR ANSWER : ?

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