1000+ Process Control and Instrumentation Quiz Questions & Answers - 3

Question: 11

_____ flow meter works on the principle of Doppler effect.

(A) Angular momentum

(B) Radiation type

(C) Gyroscopic

(D) Ultrasonic

Question: 12

The main purpose for reset action in a control loop is to

(A) increase controller gain

(B) speed up response

(C) decrease controller gain

(D) eliminate offset

Question: 13

Gas chromatography is used for the measurement of

(A) concentration

(B) flow rate

(C) pressure

(D) temperature

Question: 14

Air velocity in duct can be measured by using _____ and manometer.

(A) anemometer

(B) bourdon gauge

(C) pitot tube

(D) orificemeter

Question: 15

Catalyst used in ammonia synthesis uses ____ as a promoter.

(A) Pt

(B) Ni

(C) K₂O

(D) Al₂O₃