A. Mercury in glass thermometer with covering
B. Bare mercury in glass thermometer
C. Pressure gauge with one bellow, two tubes and a tank
D. None of these
Related Mcqs:
- 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 - Pick out the one which is a first order instrument ?
A. Mercury in glass thermometer (without any covering or air gap)
B. Bare metallic thermometer
C. Bare vapor pressure thermometer
D. All A., B. and C. - Water is flowing through a series of four tanks and getting heated as shown in figure. It is desired to design a cascade control scheme for controlling the temperature of water leaving the tank 4 as there is a disturbance in the temperature of a second stream entering the tank 2. Select the best place to take the secondary measurement for the second loop?
A. Tank 1
B. Tank 2
C. Tank 3
D. Tank 4 - Which of the following is not a composition measuring instrument ?
A. Thermal conductivity cell
B. Mass spectrometer
C. Polarograph
D. Hot wire anemometer - 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 judges the accuracy of an instrument ?
A. Dead zone
B. Drift
C. Static error
D. None of these - Which of the following is the dynamic characteristics of an instrument ?
A. Reproducibility
B. Sensitivity
C. Dead zone
D. Fidelity - Which of the following is an undesirable dynamic characteristic of an instrument ?
A. Reproducibility
B. Dead zone
C. Time lag
D. Static error - Phase lag of the frequency response of a second order system to a sinusoidal forcing function______________?
A. Is 30°
B. Is 90° at the most
C. Approaches 180° asymptotically
D. Is 120° - 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
