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Process Control and Instrumentation

For measuring the temperature of a red hot furnace, which is the most suitable instrument ?

August 24, 2021March 5, 2019 by admin
For measuring the temperature of a red hot furnace, which is the most suitable instrument ?

A. Platinum resistance thermometer
B. Thermocouple
C. Optical pyrometer
D. Bimetallic thermometer

Categories Process Control and Instrumentation

Bourdon tube is never made of________________?

August 24, 2021March 5, 2019 by admin
Bourdon tube is never made of________________?

A. Phosphor bronze
B. Monel metal
C. Stainless steel
D. Cast iron

Categories Process Control and Instrumentation

Minute depression of freezing point of a liquid solvent on addition of a solid solute can be best measured by a________________?

August 24, 2021March 5, 2019 by admin
Minute depression of freezing point of a liquid solvent on addition of a solid solute can be best measured by a________________?

A. Beckman thermometer
B. Dilatometer
C. Mercury thermometer
D. Bimetallic thermometer

Categories Process Control and Instrumentation

The pressure sensing element of elastic type pressure gauge is never made in the form of a_________________?

August 24, 2021March 5, 2019 by admin
The pressure sensing element of elastic type pressure gauge is never made in the form of a_________________?

A. Bellow
B. Diaphragm
C. Strip
D. Bourdon tube

Categories Process Control and Instrumentation

Dome temperature of blast furnace stove is most accurately measured by a____________________?

August 24, 2021March 5, 2019 by admin
Dome temperature of blast furnace stove is most accurately measured by a____________________?

A. Radiation pyrometer
B. platinum-platinum/rhodium thermocouple
C. Iron-constantan thermocouple
D. Platinum resistance thermometer

Categories Process Control and Instrumentation

The term analogous to voltage in a single tank system is the_______________?

August 24, 2021March 5, 2019 by admin
The term analogous to voltage in a single tank system is the_______________?

A. Heat content of the system
B. Liquid volume in the tank
C. Flow rate
D. Level of liquid

Categories Process Control and Instrumentation

A negative gain margin expressed in decibels means a/an ____________ system?

August 24, 2021March 5, 2019 by admin
A negative gain margin expressed in decibels means a/an ____________ system?

A. Stable
B. Unstable
C. Critically damped
D. None of these

Categories Process Control and Instrumentation

Humidity of air can be determined by a__________________?

August 24, 2021March 5, 2019 by admin
Humidity of air can be determined by a__________________?

A. Chromatograph
B. Sling psychrometer
C. Mass spectrometer
D. Polarimeter

Categories Process Control and Instrumentation

In a single tank system, the transfer function of level to inlet flow rate is__________________?

August 24, 2021March 5, 2019 by admin
In a single tank system, the transfer function of level to inlet flow rate is__________________?

A. R/TS
B. R/(TS + 1)
C. 1/TS
D. None of these

Categories Process Control and Instrumentation

The closed loop pole of a stable second order system could be_______________?

August 24, 2021March 5, 2019 by admin
The closed loop pole of a stable second order system could be_______________?

A. Both real and positive
B. Complex conjugate with positive real parts
C. Both real and negative
D. One real positive and the other real negative

Categories Process Control and Instrumentation
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