A. Used for the measurement of thermal radiation
B. An element which senses optical input and delivers thermal output
C. Both A. & B.
D. Neither A. nor B.
Related Mcqs:
- Measurement of pressure in ammonia reactor is done by __________________?
A. Bourdon gauge
B. U-tube manometer
C. Inclined tube manometer
D. Pirani gauge - Dilatometer is used to measure __________________?
A. Stress
B. Strain
C. Deflection
D. Contraction/expansion due to changes in temperature - Response of a linear control system for a change in set point is called __________________?
A. Frequency response
B. Transient response
C. Servo problem
D. Regulator problem - Nickel percentage in invar which is an iron-nickel alloy, and is used as a thermocouple material is __________________?
A. 12
B. 36
C. 54
D. 68 - Platinum resistance thermometer is the international standard for temperature measurement between __________________?
A. Triple point of hydrogen and freezing point of antimony
B. 13.81°K to 903.9°K
C. Both A. and B.
D. Neither A. nor B. - Time constant is the __________________?
A. Time taken by the controlled variable to reach 63.2% of its full change
B. Same as transportation lag
C. Same as dead time
D. Time required by the measured variable to reach 63.2% of its ultimate change - Smoke density of the flue gas going out of the chimney is measured by a __________________?
A. Polarograph
B. Thermal conductivity meter
C. Photo electric cell
D. Chromatograph - The response of two tanks of same size and resistance in series is __________________?
A. Under damped
B. Critically damped
C. Over damped
D. None of the above - High temperature of around 2000°C of incandescent gas mantles is measured by a/an __________________?
A. Specially designed thermocouple
B. Optical pyrometer
C. Radiation pyrometer
D. None of these - Continuous measurement of specific gravity of a liquid is done by __________________?
A. Hydrometer
B. Contact-type electric indicators
C. Displacement meter
D. Both A. and C.
