A non-linear chemical system is exemplified by a/an
The transfer function for an ideal proportional plus reset controller (reset time T) is
The frequency response of a first order system, has a phase shift with lower and upper bounds given by
Phase shift of a first order system ϕ = tan^-1(-)
For lower bound w = 0, ϕ = 0
and for upper bound, w = +∞ , ϕ = -π/2
Gas chromatography is used for the measurement of
Which of the following thermocouples can measure the maximum temperature ?
Radiation pyrometers as compared to thermocouples
Liquid flow rate in a small channel is best measured by a/an
Specific gravity of a liquid can not be measured by a/an
__________ temperature scale assigns 0o to the 'ice point' and 80o to the 'steam point'.
Dead zone is the
Dead zone is the maximum change in the variable that does not change the reading of the instrument.
Which of the following thermometers is not suitable for distant reading upto 60 metres?
Degree to which an instrument indicates the changes in measured variable without dynamic error is called its
Thermistors are made of
A barometer measures the __________ pressure.
Humidity of air can be determined by a
Thermocouple in a thermal well behaves as a true
The transfer function for a P-D controller is
Bode diagram is a plot of
Working principle of disappearing filament type optical pyrometer is based on the
Strain gage uses an electrical conductor wire, which when elastically stretched increases in length and reduces in diameter. Both these dimensional changes result in __________ in the electrical resistance of the wire.
Pick out the wrong statement
Range of hydrogen gas constant volume themometer is __________ oC.
The initial value (t=0) of the unit step response of the transfer function [(s + 1)/(2s + 1)] is
The __________ of a vapor pressure thermometer is a primary element.
The time constant of a first order process with resistance R and capacitance C is