A. Reproducibility
B. Dead zone
C. Time lag
D. Static error
Related Mcqs:
- Which of the following is the dynamic characteristics of an instrument ?
A. Reproducibility
B. Sensitivity
C. Dead zone
D. Fidelity - Degree to which an instrument indicates the changes in measured variable without dynamic error is called its ___________________?
A. Speed of response
B. Reproducibility
C. Fidelity
D. Static characteristics - 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 - Which of the following is a desirable characteristic of an instrument ?
A. High drift
B. High fidelity
C. High measuring lag
D. Poor reproducibility - 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. - ______________ is undesirable in thermocouples used in industries ?
A. Linear relation of emf to temperature
B. Corrosion resistance
C. Oxidation resistance
D. Non-linear relation of emf to temperature - The frequency response of a dynamic element shows a constant magnitude ratio at all frequencies. The element exhibits a negative phase shift at all frequencies. The absolute value of the phase shift increases linearly with frequency. The element has the transfer function ?
A. e-ηS
B. (T1S + 1)/(T2S + 1)
C. (T1S/(T2S + 1)
D. (T1S + 1)/(T2S - Water is entering a storage tank at a temperature T0 and flow rate Q0 and leaving at a flow rate Q and temperature T. There are negligible heat losses in the tank. The area of cross-section of the tank is A0. The model that describes the dynamic variation of temperature of water in the tank with time is given as________________?
A. Q0(T0 – T) = Ac . h (dT/dt)
B. Q0T0 – QT = Ac . h (dT/dt)
C. Q(T0 – T) = Ac . h (dT/dt)
D. Q(T0 – T) = Ac . (dTH/dt) - 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 judges the accuracy of an instrument ?
A. Dead zone
B. Drift
C. Static error
D. None of these
