Process Control and Instrumentation

Continuous measurement of moisture in paper is done by_______________?

Byadmin March 5, 2019August 24, 2021

Continuous measurement of moisture in paper is done by_______________?

A. Sling psychrometer
B. Hair-hygrometer
C. Weighing
D. High resistance Wheatstone bridge circuit

Process Control and Instrumentation

E.m.f. generated by thermocouples is of the order of ________________?

E.m.f. generated by thermocouples is of the order of ________________?

A. Milli volts
B. Micro volts
C. Volts
D. Kilo volts

Read More E.m.f. generated by thermocouples is of the order of ________________?
Process Control and Instrumentation

Which of the following cannot measure a temperature of 1600°C ?

Which of the following cannot measure a temperature of 1600°C ?

A. Platinum resistance thermometer
B. Thermocouple
C. Photo-electric pyrometer
D. Radiation pyrometer

Read More Which of the following cannot measure a temperature of 1600°C ?
Process Control and Instrumentation

The calibration data of a thermocouple with its cold junction at 0°C are given below. The hot junction of the thermocouple is placed in a bath at 80°C, while its cold junction is at 20°C. What is the emf of thermocouple ?

The calibration data of a thermocouple with its cold junction at 0°C are given below. The hot junction of the thermocouple is placed in a bath at 80°C, while its cold junction is at 20°C. What is the emf of thermocouple ?

A. 3.26 mv
B. 0.80 mv
C. 2.46 mv
D. 2.43 mv

Read More The calibration data of a thermocouple with its cold junction at 0°C are given below. The hot junction of the thermocouple is placed in a bath at 80°C, while its cold junction is at 20°C. What is the emf of thermocouple ?
Process Control and Instrumentation

Cascade control means _______________?

Cascade control means _______________?

A. Feed forward control
B. More than one feed-back loop
C. On-off control
D. One feed-back loop

Read More Cascade control means _______________?
Process Control and Instrumentation

Which of the following thermocouples is capable of measuring a temperature of -50°C ?

Which of the following thermocouples is capable of measuring a temperature of -50°C ?

A. Platinum-platinum + rhodium
B. Chromel-Alumel
C. Iron-constantan
D. Copper-constantan

Read More Which of the following thermocouples is capable of measuring a temperature of -50°C ?
Process Control and Instrumentation

Response of a system to a sinusoidal input is called _____________ response?

Response of a system to a sinusoidal input is called _____________ response?

A. Impulse
B. Unit step
C. Frequency
D. None of these

Read More Response of a system to a sinusoidal input is called _____________ response?

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