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.Management Sciences
Category: Process Control and Instrumentation
Which of the following is not a mechanical pressure sensing element ?
0
A. Bellows
B. Diaphragm
C. Bourdon tube
D. U-tube
In second order underdamped system ?
A. Decay ratio = overshoot
B. Decay ratio = (overshoot)2
C. Overshoot increases for increasing damping co-efficient
D. Large damping co-efficient means smaller damping
In a single tank system, the transfer function of level to inlet flow rate is__________________?
A. R/TS
B. R/(TS + 1)
C. 1/TS
D. None of these
A pyranometer is an instrument used for measuring the___________________?
A. Beam radiation
B. Global radiation
C. Bright sunshine period
D. None of these
Which of the following thermocouples has the least temperature measurement range ?
A. Copper-constantan
B. Chromel-alumel
C. Platinum-platinum/rhodium
D. Iron-constantan
Relationship between absorption/evolution of heat at the thermocouple junctions and the current flow in the circuit is given by _____________ effect?
A. Peltier
B. Thomson
C. Seebeck
D. None of these
Which of the following instruments is not used for measuring sub-zero (<0°) temperatures ?
A. Platinum resistance thermometer
B. Mercury in glass thermometer
C. Vapor pressure thermometer
D. Radiation pyrometer
“A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion?
A. Bode stability
B. Nyquist
C. Routh stability
D. None of these
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