A system with a double pole at the origin is unstable since the corresponding term in the time domain
A system with a double pole at the origin is unstable since the corresponding term in the time domain
The amplitude ratio for the sinusoidal response of __________ is < 1.
The amplitude ratio for the sinusoidal response of __________ is < 1.
A constant volume gas thermometer employing __________ is used to measure sub-zero (i.e., < 0° C) temperature.
A constant volume gas thermometer employing __________ is used to measure sub-zero (i.e., < 0° C) temperature.
Liquid discharge from a tank or reservoir can not be measured by
Liquid discharge from a tank or reservoir can not be measured by
__________ thermometer can not measure sub-zero (< 0° C) temperature,
__________ thermometer can not measure sub-zero (< 0° C) temperature,
__________ type of element is normally not used in the bimetallic thermometers.
__________ type of element is normally not used in the bimetallic thermometers.
The transfer function for a P-D controller is
The transfer function for a P-D controller is
Which of the following can measure temperatures in the range of - 20 to 300°C ?
Which of the following can measure temperatures in the range of - 20 to 300°C ?
Liquid levels in autocalves are measued by
Liquid levels in autocalves are measued by
Vapour actuated pressure spring thermometer does not require ambient temperature compensation. Ambient temperature compensation is provided in gas or liquid expansion pressure spring thermometer by
Vapour actuated pressure spring thermometer does not require ambient temperature compensation. Ambient temperature compensation is provided in gas or liquid expansion pressure spring thermometer by
Starting temperature of optical radiation pyrometer is __________ °C.
Starting temperature of optical radiation pyrometer is __________ °C.
In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.
In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.
Non-metallic diaphragm used as pressure sensor in instruments is generally made of
Non-metallic diaphragm used as pressure sensor in instruments is generally made of
Thermistors are used in __________ devices.
Thermistors are used in __________ devices.
Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C.
Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C.
Stability of a control system containing a transportation lag can be best analysed by
Stability of a control system containing a transportation lag can be best analysed by
Pick out the wrong statement.
Pick out the wrong statement.
Pick out the wrong statement
Pick out the wrong statement
Emf generated in a thermocouple depends on the temperature
Emf generated in a thermocouple depends on the temperature
In Bode plot, A.R. vs. w is plotted on a/an __________ graph paper.
In Bode plot, A.R. vs. w is plotted on a/an __________ graph paper.
A first order system with unity gain and time constant τ is subjected to a sinusoidal input of frequency w = 1/τ. The amplitude ratio for this system is
A first order system with unity gain and time constant τ is subjected to a sinusoidal input of frequency w = 1/τ. The amplitude ratio for this system is
Paramagnetism method is not used for the composition determination of __________ in gases.
Paramagnetism method is not used for the composition determination of __________ in gases.
The __________ of a vapor pressure thermometer is a secondary element.
The __________ of a vapor pressure thermometer is a secondary element.
For a feed back control system to be stable, the
For a feed back control system to be stable, the
Phase margin is equal to
Phase margin is equal to
The thermal emf-temperature relationship of most thermocouples is
The thermal emf-temperature relationship of most thermocouples is
Flow rate of a river is measured by a/an
Flow rate of a river is measured by a/an
A mercury thermometer can not be used to measure the temperature below the freezing point of mercury, which is __________ °C.
A mercury thermometer can not be used to measure the temperature below the freezing point of mercury, which is __________ °C.
Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing
Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing
Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference?
Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference?
Positioning controllers are used for
Positioning controllers are used for
Temperature control of an exothermic chemical reaction taking place in a CSTR is done with the help of cooling water flowing in a jacket around the reactor. The types of valve and controller action to be recommended are
Temperature control of an exothermic chemical reaction taking place in a CSTR is done with the help of cooling water flowing in a jacket around the reactor. The types of valve and controller action to be recommended are
Pick out the wrong statement.
Pick out the wrong statement.
Flame photometry is used for the determination of compositional analysis of
Flame photometry is used for the determination of compositional analysis of
A mercury barometer measures the __________ pressure.
A mercury barometer measures the __________ pressure.
Which of the following is not a composition measuring instrument?
Which of the following is not a composition measuring instrument?
Temperature of __________ can not be measured by an optical or radiation pyrometer.
Temperature of __________ can not be measured by an optical or radiation pyrometer.
The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches
The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches
Polarisation of light forms the working principle of a
Polarisation of light forms the working principle of a
The frequency response of a first order system, has a phase shift with lower and upper bounds given by
The frequency response of a first order system, has a phase shift with lower and upper bounds given by
Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an
Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an
Nichol's chart deals with
Nichol's chart deals with
Which of the following is not the triple point of water?
Which of the following is not the triple point of water?
Emission spectroscopy is used for
Emission spectroscopy is used for
Composition of alloys can be determined by
Composition of alloys can be determined by
The frequency at which maximum amplitude ratio is attained is called the __________ frequency.
The frequency at which maximum amplitude ratio is attained is called the __________ frequency.
What is the dynamic error in a critically damped second order instrument for a ramp input (AT)?
What is the dynamic error in a critically damped second order instrument for a ramp input (AT)?
Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature?
Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature?
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
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
The amplitude ratio for the sinusoidal response of a __________ is 1.
The amplitude ratio for the sinusoidal response of a __________ is 1.
A barometer measures the __________ pressure.
A barometer measures the __________ pressure.
The temperature range for which copper resistance thermometer can be used is __________ °C
The temperature range for which copper resistance thermometer can be used is __________ °C
Flow rate of sludge is not measured by a/an
Flow rate of sludge is not measured by a/an
Mass spectrometer is used for the composition analysis of
Mass spectrometer is used for the composition analysis of
In a single tank system, the transfer function of level to inlet flow rate is
In a single tank system, the transfer function of level to inlet flow rate is
Phase lag of the sinusoidal response of a first order system is
Phase lag of the sinusoidal response of a first order system is
Thermal conductivity measurement com-prises the working principle of a
Thermal conductivity measurement com-prises the working principle of a
The unit step response of the transfer function 1/(s² + 2s + 3)
The unit step response of the transfer function 1/(s² + 2s + 3)
When the damping co-efficient (ξ) is unity, the system is
When the damping co-efficient (ξ) is unity, the system is
__________ stability method uses open loop transfer function.
__________ stability method uses open loop transfer function.
A simple pitot tube measures the
A simple pitot tube measures the
__________ is undesirable in thermocouples used in industries,
__________ is undesirable in thermocouples used in industries,
Use of I-control along with P-control facilitates
Use of I-control along with P-control facilitates
The __________ of a vapor pressure thermometer is a primary element.
The __________ of a vapor pressure thermometer is a primary element.
The offset introduced by proportional controller with gain Kc in response of first order system can be reduced by
The offset introduced by proportional controller with gain Kc in response of first order system can be reduced by
In a second order under damped system, the
In a second order under damped system, the
Number of poles in a system with transfer function 1/(s² + 2s² + 1) is
Number of poles in a system with transfer function 1/(s² + 2s² + 1) is
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?
Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale.
Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale.
A system with transfer function (2S/4S) + 1 is of __________ order.
A system with transfer function (2S/4S) + 1 is of __________ order.
Minute depression of freezing point of a liquid solvent on addition of a solid solute can be best measured by a
Minute depression of freezing point of a liquid solvent on addition of a solid solute can be best measured by a
Psychrometer determines the
Psychrometer determines the
pH meter has
pH meter has
Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change?
Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change?
Temperature of molten pig iron (1450°C) and molten slag (1500°C) flowing out of a blast furnace is measured by a/an
Temperature of molten pig iron (1450°C) and molten slag (1500°C) flowing out of a blast furnace is measured by a/an
Which of the following thermocouples can measure the maximum temperature?
Which of the following thermocouples can measure the maximum temperature?
Which of the following can not measure a temperature of 1600°C ?
Which of the following can not measure a temperature of 1600°C ?
Which of the following controllers has maximum offset?
Which of the following controllers has maximum offset?
Bourdon gauges are used for measuring pressure (kg/cm² )
Bourdon gauges are used for measuring pressure (kg/cm² )
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
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
Stabilising time for the controllers is the time required for the response to reach __________ percent of its ultimate value.
Stabilising time for the controllers is the time required for the response to reach __________ percent of its ultimate value.
Photoelectric pyrometers are suitable in the temperature range of __________ °C.
Photoelectric pyrometers are suitable in the temperature range of __________ °C.
An amplitude ratio of 0.1 corresponds to __________ decibels.
An amplitude ratio of 0.1 corresponds to __________ decibels.
The fluid used in hydraulic controller is
The fluid used in hydraulic controller is
The Laplace transform of exp(at), where a > 0, is defined only for the Laplace parameter, s > a since
The Laplace transform of exp(at), where a > 0, is defined only for the Laplace parameter, s > a since
Which of the following is an undesirable dynamic characteristic of an instrument?
Which of the following is an undesirable dynamic characteristic of an instrument?
Which of the following thermocouples is incapable of measuring sub-zero (i.e., < 0°C) temperature?
Which of the following thermocouples is incapable of measuring sub-zero (i.e., < 0°C) temperature?
Pick out the first order system from among the following.
Pick out the first order system from among the following.
Which of the following is a desirable characteristic of an instrument?
Which of the following is a desirable characteristic of an instrument?
Identify an unbounded input from inputs whose transfer functions are given below
Identify an unbounded input from inputs whose transfer functions are given below
A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is
A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is
__________ is the static characteristics of an instrument,
__________ is the static characteristics of an instrument,
Radiation pyrometers as compared to thermocouples
Radiation pyrometers as compared to thermocouples
Alphatron measures pressure __________ microns.
Alphatron measures pressure __________ microns.
Which of the following is not a second order instrument?
Which of the following is not a second order instrument?
Change of angle of refraction with composition comprises the working principle of a
Change of angle of refraction with composition comprises the working principle of a
Load cells are used for the measurement of
Load cells are used for the measurement of
Compositional analysis of flue gas coming out of a furnace in respect of O₂ and CO₂% can be continuously done by a/an
Compositional analysis of flue gas coming out of a furnace in respect of O₂ and CO₂% can be continuously done by a/an
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?
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?
