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?

Process Control and Instrumentation
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?

Mercury

Methyl alcohal

Water

Carbon-tetrachloride

Mercury

Methyl alcohal

Water

Carbon-tetrachloride

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Process Control and Instrumentation
The transfer function for a P-D controller is

Kc(1+τD s)

Kc τD s

Kc/τD s

Kc(1 +1/τD s)

Kc(1+τD s)

Kc τD s

Kc/τD s

Kc(1 +1/τD s)

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Process Control and Instrumentation
Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an

Solid semi-conductor

Liquid semi-conductor

Insulator

Conductor

Solid semi-conductor

Liquid semi-conductor

Insulator

Conductor

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Process Control and Instrumentation
Change of angle of refraction with composition comprises the working principle of a

Polarograph

Polarimeter

Spectrometer

Refractrometer

Polarograph

Polarimeter

Spectrometer

Refractrometer

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Process Control and Instrumentation
Emf developed by a thermocouple while measuring a temperature of 800°C is about 31 mV. The type of thermocouple used is

Chromel-alumel

None of these

Platinum-platinum+rhodium

Iron-constantan

Chromel-alumel

None of these

Platinum-platinum+rhodium

Iron-constantan

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Process Control and Instrumentation
Routh test

Criterion is not applicable to systems with polynomial characteristic equation

Cannot be used to test the stability of a control system containing transportation lag

Can not determine as to how many roots of the characteristics equation have positive real roots

Criterion provides information about the actual location of roots

Criterion is not applicable to systems with polynomial characteristic equation

Cannot be used to test the stability of a control system containing transportation lag

Can not determine as to how many roots of the characteristics equation have positive real roots

Criterion provides information about the actual location of roots

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Process Control and Instrumentation

Process Control and Instrumentation 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?

Process Control and Instrumentation The transfer function for a P-D controller is

Process Control and Instrumentation Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an

Process Control and Instrumentation Change of angle of refraction with composition comprises the working principle of a

Process Control and Instrumentation Emf developed by a thermocouple while measuring a temperature of 800°C is about 31 mV. The type of thermocouple used is

Process Control and Instrumentation Routh test

Process Control and Instrumentation
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?

Process Control and Instrumentation
The transfer function for a P-D controller is

Process Control and Instrumentation
Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an

Process Control and Instrumentation
Change of angle of refraction with composition comprises the working principle of a

Process Control and Instrumentation
Emf developed by a thermocouple while measuring a temperature of 800°C is about 31 mV. The type of thermocouple used is

Process Control and Instrumentation
Routh test