Radiation thermometer cannot measure the temperature ___________________?

Byadmin March 5, 2019August 24, 2021

Radiation thermometer cannot measure the temperature ___________________?

A. Inside a pressure vessel
B. Of an object without coming in contact with it
C. Of liquid oxygen
D. Of moving objects at high temperature

Process Control and Instrumentation

Bimetal strips are not used in________________?

Bimetal strips are not used in________________?

A. Bimetallic thermometers
B. Thermocouples
C. Thermostats
D. Relays for opening & closing of electrical circuits

Read More Bimetal strips are not used in________________?
Process Control and Instrumentation

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 ?

A. Peltier effect
B. Thomson effect
C. Seebeck effect
D. None of these

Read More Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference ?
Process Control and Instrumentation

The frequency response of a dynamic element shows a constant magnitude ratio at all frequencies. The element exhibits a negative phase shift at all frequencies. The absolute value of the phase shift increases linearly with frequency. The element has the transfer function ?

The frequency response of a dynamic element shows a constant magnitude ratio at all frequencies. The element exhibits a negative phase shift at all frequencies. The absolute value of the phase shift increases linearly with frequency. The element has the transfer function ?

A. e-ηS
B. (T1S + 1)/(T2S + 1)
C. (T1S/(T2S + 1)
D. (T1S + 1)/(T2S

Read More The frequency response of a dynamic element shows a constant magnitude ratio at all frequencies. The element exhibits a negative phase shift at all frequencies. The absolute value of the phase shift increases linearly with frequency. The element has the transfer function ?
Process Control and Instrumentation

A bolometer is __________________?

A bolometer is __________________?

A. Used for the measurement of thermal radiation
B. An element which senses optical input and delivers thermal output
C. Both A. & B.
D. Neither A. nor B.

Read More A bolometer is __________________?
Process Control and Instrumentation

Suppose that the gain, time constant and dead time of a process with the following transfer function: Gc(s) = 10 exp( – 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain Kc of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as________________?

Suppose that the gain, time constant and dead time of a process with the following transfer function: Gc(s) = 10 exp( – 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain Kc of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as________________?

A. 8, 0.6, 0.08
B. 12, 0.6, 0.12
C. 8, 0.6, 0.12
D. 12, 0.4, 0.08

Read More Suppose that the gain, time constant and dead time of a process with the following transfer function: Gc(s) = 10 exp( – 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain Kc of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as________________?
Process Control and Instrumentation

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 ___________________?

A. -1
B. 0
C. 1
D. ∞

Read More The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches ___________________?

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