A. U-tube manometer
B. Spring loaded diaphragm valve
C. CSTR with first order reaction
D. Thermocouple kept immersed in a liquid filled thermowell
Related Mcqs:
- In a second order under damped system, the_________________?
A. Time required for the response of first reach its ultimate value is called the response time
B. Overshoot (which is a measure of how much the response exceeds the ultimate value) increase
with the decrease of damping co-efficient
C. Decay ratio (which is the ratio of the sizes of successive peaks) is equal to the reciprocal of
overshoot
D. None of these - 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 - The characteristic equation for the control system with a closed loop transfer function G1/1 + G2 is given by 1 + G2 = 0. The characteristic equation for the control system_________________?
A. Depends only upon the open loop transfer function
B. Determines its stability
C. Is the same for set point or load changes
D. All A , B & C. - Dome temperature of blast furnace stove is most accurately measured by a____________________?
A. Radiation pyrometer
B. platinum-platinum/rhodium thermocouple
C. Iron-constantan thermocouple
D. Platinum resistance thermometer - Typical specifications for design stipulates the gain margin and phase margin to be respectively__________________?
A. > 1.7 and > 30°
B. 30°
C. < 1.7 and 1.7 and < 30° - Characteristic equation is the denominator of ____________ loop transfer function?
A. Open
B. Closed
C. Both A. and B.
D. Neither A. nor B. - Which of the following is a desirable characteristic of an instrument ?
A. High drift
B. High fidelity
C. High measuring lag
D. Poor reproducibility - Which of the following is an undesirable dynamic characteristic of an instrument ?
A. Reproducibility
B. Dead zone
C. Time lag
D. Static error - The level of a liquid under pressure can be determined using___________________?
A. Bubbler system
B. Differential pressure manometer
C. Diaphragm box system
D. Air-trap system - Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury?
A. 250
B. 350
C. 550
D. 700
