1000+ Process and Control Instrumentation Objective Questions & Answers - 1

Question: 1

Working principle of radiation pyrometer is based on the

(A) Seebeck effect

(B) Stefan-Boltzmann law

(C) Kirchhoff’s law

(D) Wien’s law

Question: 2

_____ are analysed using a polarograph.

(A) Gases

(B) Liquids

(C) Solids

(D) Isotonic solutions

Question: 3

Diaphragm control value is used for

(A) granules of solid materials

(B) fluids of high viscosity

(C) corrosive chemical liquids

(D) none of these

Question: 4

Stalagmometer is used for the measurement of

(A) optical activity

(B) refractive index

(C) surface tension

(D) kinematic viscosity

Question: 5

Thermistor is a

(A) device for measuring nuclear radiation

(B) metal whose resistance does not vary with temperature

(C) metal whose resistance increases linearly with temperature rise

(D) semiconductor whose resistance decreases with temperature rise