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.Management Sciences
Category: Process Control and Instrumentation
Which of the following filled system expansion thermometer has the capability to measure the lowest temperature ?
A. Mercury in glass thermometer
B. Mercury in steel thermometer
C. Alcohol in glass thermometer
D. Fused metal (Na or K) in steel thermometer
Flow rate of sludge is not measured by a/an_________________?
A. Orificemeter
B. Open weir
C. Kennison nozzle
D. Both B. & C.
For measuring the temperature of a red hot furnace, which is the most suitable instrument ?
A. Platinum resistance thermometer
B. Thermocouple
C. Optical pyrometer
D. Bimetallic thermometer
Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is __________________?
A. Water
B. Carbon tetrachloride
C. Paraffin
D. Ethylene glycol
Flow rate through an orifice is _____________ the pressure differential?
A. Proportional to
B. Inversely proportional to the square root of
C. Proportional to the square root of
D. Inversely proportional to the square of
The offset introduced by proportional controller with gain Kc in response of first order system can be reduced by ____________________?
A. Reducing value of Kc
B. Introducing integral control
C. Introducing derivative control
D. None of the above
Which of the following is not a composition measuring instrument ?
A. Thermal conductivity cell
B. Mass spectrometer
C. Polarograph
D. Hot wire anemometer
A typical example of a physical system with under damped characteristic is a____________________?
A. U-tube manometer
B. Spring loaded diaphragm valve
C. CSTR with first order reaction
D. Thermocouple kept immersed in a liquid filled thermowell
Strain gage pressure transducers are used to measure _____________ pressures?
A. Gage as well as vacuum
B. Absolute as well as differential
C. Both A. and B.
D. Neither A. nor B.
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