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.Management Sciences
Category: Process Control and Instrumentation
Thermal well made of _____________ gives the fastest speed of response, while measuring temperature by thermocouples?
A. Steel
B. Vycor (a glass)
C. Nichrome
D. Inconel
Dead zone is the__________________?
A. Same as time constant
B. Same as transportation lag
C. Maximum change in the variable that does not change the reading of the instrument
D. None of these
Mercury thermometer can be used to measure the temperature upto ____________ °C?
A. 100
B. 250
C. 350
D. 750
Which of the following is not a variable area flow meter ?
A. Piston type meter
B. Rotameter
C. Magnetic flow meter
D. Orifice and tapered plug meter
For the time domain function f(t) = t, the Laplace transform of ∫0 t f(t) dt is given by___________________?
A. 1/2 S3
B. 2/S3
C. 1/S3
D. 2/S2
Dilute wine was used as a thermometric liquid initially to develop temperature scale. First empirical temperature scale developed was the _____________ scale?
A. Kelvin
B. Centigrade
C. Fahrenheit
D. Reaumer
A bolometer is __________________?
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.
What is the dynamic error in a critically damped second order instrument for a ramp input (At) ?
A. 0.5 AT
B. 2 AT
C. √(AT)
D. 1.5 AT
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