In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the _____________ variable?
A. Load
B. Manipulated
C. Controlled
D. None of these
Process Control and Instrumentation
Continuous measurement of specific gravity of a liquid is done by __________________?
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.
Which of the following is not classified as a thermo electric pyrometer ?
Which of the following is not classified as a thermo electric pyrometer ?
A. Resistance thermometer
B. Thermocouple
C. Optical pyrometer (disappearing filament type)
D. Radiation pyrometer
If response of a control system is to be free of offset and oscillation, the most suitable controller is_________________?
If response of a control system is to be free of offset and oscillation, the most suitable controller is_________________?
A. Proportional controller
B. Proportional-derivative (PD) controller
C. Proportional-integral (PI) controller
D. Proportional integral-derivative (PID) controller
For two non-interacting first order systems connected in series, the overall transfer function is the ______________ of the individual transfer functions?
For two non-interacting first order systems connected in series, the overall transfer function is the ______________ of the individual transfer functions?
A. Product
B. Ratio
C. Sum
D. Difference
Which of the following thermocouples is capable of measuring a temperature of -50°C ?
Which of the following thermocouples is capable of measuring a temperature of -50°C ?
A. Platinum-platinum + rhodium
B. Chromel-Alumel
C. Iron-constantan
D. Copper-constantan
Reference points i.e., ice point and steam point in Reaumer temperature scale are respectively_________________?
Reference points i.e., ice point and steam point in Reaumer temperature scale are respectively_________________?
A. – 273° & 80°
B. 0° & 80°
C. 32° & 460°
D. 32° & 80°
Non-metallic diaphragm used as pressure sensor in instruments is generally made of__________________?
Non-metallic diaphragm used as pressure sensor in instruments is generally made of__________________?
A. Teflon
B. Synthetic rubber
C. Bakelite
D. Thick paper
In second order underdamped system ?
In second order underdamped system ?
A. Decay ratio = overshoot
B. Decay ratio = (overshoot)2
C. Overshoot increases for increasing damg co-efficient
D. Large damg co-efficient means smaller damg
Bimetal strips are not used in________________?
Bimetal strips are not used in________________?
A. Bimetallic thermometers
B. Thermocouples
C. Thermostats
D. Relays for opening & closing of electrical circuits