A. Based on the principle of Faraday’s law
B. Capable of measuring the flow rate of slurries and electrolytes
C. Based on the linear relationship between the fluid flow rate and the induced voltage
D. All A., B. and C.
Related Mcqs:
- Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their ?
A. Low thermal conductivity
B. Low electrical conductivity
C. High viscosity index
D. Low flash point - Continuous flue gas analyser makes use of paramagnetic properties of some of its constituents, which move towards the strongest part of the magnetic field thus displacing diamagnetic gases. Which of the following gases is diamagnetic ?
A. CO2
B. O2
C. NO
D. NO2 - The inverse Laplace transform of the function f(S) = 1/S (1 + S) is_________________?
A. 1 + et
B. 1 – et
C. 1 + e-t
D. 1 – e-t - The experimental response of the controlled variable y(t) for a step change of magnitude ‘P’ in the manipulated variable x(t) is shown below: The appropriate transfer function of the process is_________________?
A. (Q/P) e-(Q/R)S/(TdS + 1)
B. (Q/R) e-TdS/(Q/P) (S + 1)
C. (Q/P) e-TdS/(Q/R) (S + 1)
D. (Q/R) e-(P/Q)S/(TdS + 1) - The thermal emf-temperature relationship of most thermocouples is_________________?
A. Linear
B. Parabolic
C. Exponential
D. Square root - 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 - According to Bode stability criterion, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is_________________?
A. 0°
B. 45°
C. 90°
D. 180° - The time constant of a first order process with resistance R and capacitance C is__________________?
A. R + C
B. R – C
C. RC
D. 1/RC - A sinusoidal variation in the input passing through a linear first order system _________________?
A. Becomes more oscillatory (frequency increases)
B. Becomes less oscillatory (frequency decreases)
C. Gets amplified (magnitude increases)
D. Gets attenuated (magnitude decreases) - Flow rate measurement of hostile acids and alkalis can be most suitably done by a/an ________________?
A. Venturimeter
B. Orificemeter
C. Magnetic flow meter
D. Hot wire anemometer
