Exam2win > Engineering > Mechanical Engineering > Process Instrumentation And Control > part2

Process Instrumentation And Control QUESTIONS AND ANSWERS

Mechanical Engineering : Process Instrumentation And Control QUESTIONS AND ANSWERS :: part2 : 11 to 15

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

11.Which of the following have relatively large and negative temperature coefficients of resistance :

radiation pyrometers

optical pyrometers

thermistors

platinum resistance detectors

thermocouples.

12.Protective coating by a suitable cover are applied over strain gauge in order to protect it against:

temperature rise

dust and dirt

moisture

ageing

shorting by conductive contact.

13.Which of the following glass is used for 00-600�C temperature measurement by mercury-in-glass thermometer :

lead glass

normal grade

borosilicate

supermax

any one of the above.

14.Cold junction compensation is needed in ase of measurement of temperature by :

thermocouple

thermopile

thermistor

zener diode

resistance thermometer.

15.Which of the following consists of a very thin strip of nickel or platinum foil which responds to temperature in the same manner as the resistance thermometer :

thermo pile

bolometer

radiation pyrometer

thermistor

optical pyrometer.

More Process Instrumentation And Control QUESTIONS AND ANSWERS available in next pages