Routh stability method uses ______________ loop transfer function?
A. Open
B. Closed
C. Either A. or B.
D. Neither A. nor B.
Process Control and Instrumentation
The function of a transducer is to _______________ ?
The function of a transducer is to _______________ ?
A. Modify the input signal
B. Amplify the input signal
C. Convert the primary signal into a more useful quantity, usually an electric impulse
D. Codify/decodify the input signal
_______________ thermometer cannot measure sub-zero (< 0° C) temperature ?
_______________ thermometer cannot measure sub-zero (< 0° C) temperature ?
A. Mercury in glass
B. Bimetallic
C. Vapor pressure
D. Resistance
A mercury thermometer cannot be used to measure the temperature below the freezing point of mercury, which is _____________ °C?
A mercury thermometer cannot be used to measure the temperature below the freezing point of mercury, which is _____________ °C?
A. -38.9
B. -11.9
C. -60.9
D. -80.9
The second order system with the transfer function 4/(s2 + 2s + 4) has a damping ratio of ___________________?
The second order system with the transfer function 4/(s2 + 2s + 4) has a damg ratio of ___________________?
A. 2.0
B. 0.5
C. 1.0
D. 4.0
The calibration data of a thermocouple with its cold junction at 0°C are given below. The hot junction of the thermocouple is placed in a bath at 80°C, while its cold junction is at 20°C. What is the emf of thermocouple ?
The calibration data of a thermocouple with its cold junction at 0°C are given below. The hot junction of the thermocouple is placed in a bath at 80°C, while its cold junction is at 20°C. What is the emf of thermocouple ?
A. 3.26 mv
B. 0.80 mv
C. 2.46 mv
D. 2.43 mv
Presence of a small amount of water in the organic systems can be determined by the _____________ method?
Presence of a small amount of water in the organic systems can be determined by the _____________ method?
A. Electrical conductivity
B. Polarimetry
C. Emission spectroscopy
D. Dielectric constant end loss factor
Working principle of radiation pyrometer is based on the __________________?
Working principle of radiation pyrometer is based on the __________________?
A. Wien’s law
B. Kirchoff’s law
C. Stefan Boltzmann law
D. Seebeck effect
Which of the following controllers has maximum offset ?
Which of the following controllers has maximum offset ?
A. P-controller
B. P-I controller
C. P-D controller
D. P-I-D controller
Which of the following flow-metering instruments is an areameter ?
Which of the following flow-metering instruments is an areameter ?
A. Venturimeter
B. Rotameter
C. Pitot tube
D. Hot wire anemometer