A sinusoidal variation in the input passing through a linear first order system
Nitrogen gas constant volume thermometer is suitable for measuring a temperature of __________ �C.
What is the overall transfer function (C/R) of the following block diagram if G = G1. G2. G3 and H = H1.H2.
Pick out the most suitable instrument for measuring temperature in the range of-40 to 425�C.
Accurate temperature measurement performance of a radiation pyrometer can not be affected, if the
Relationship between absorption/evolution of heat at the thermocouple junctions and the current flow in the circuit is given by __________ effect.
Configuration of Bourdon spring tube is never made of __________ shape.
Thermodynamic celcius scale of temperature measurement is
In a closed loop system, the process to be controlled is an integrating process with transfer function l/2s. The controller proposed to be used in an integral controller with transfer function 1/T1s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit
According to Bode stability criterian, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is
Resistance of a gas in a vessel is given by (where, P = pressure, V = volume of the vessel, n = no. of moles of the gas, R = gas constant)
Measurement of pressure in ammonia reactor is done by
The fluid used in hydraulic controller is
Which of the following thermocouple materials does not contain nickel ?
Flow rate of a river is measured by a/an
Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a
Identify an unbounded input from inputs whose transfer functions are given below
"A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency." This is __________ criterion.
Feed forward controller accounts for the __________ changes.
Which thermocouple can be used to measure a temperature of around 1400�C ?
Which of the following filled system expansion thermometer has the capability to measure the lowest temperature ?
Concentration of sugar solution can be determined by the
In a single tank system, the transfer function of __________ to inlet flow rate is 1/TS+1.
Which of the following can not measure a temperature of 1600�C ?
Which of the following instruments is not used for measuring sub-zero (<0°) temperatures ?