What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system ?

Byadmin March 5, 2019August 24, 2021

What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system ?

A. 1
B. > 1
C. < 1
D. None of these

Process Control and Instrumentation

Conversion formula for converting amplitude ratio (AR) into decibels is ________________?

Conversion formula for converting amplitude ratio (AR) into decibels is ________________?

A. Decibel = 20 log10 (AR)
B. Decibel = 20 loge (AR)
C. Decibel = 20 log10 (AR)0.5
D. Decibel = 20 loge (AR)0.5

Read More Conversion formula for converting amplitude ratio (AR) into decibels is ________________?
Process Control and Instrumentation

Mcleod gauge is used to measure the __________________?

Mcleod gauge is used to measure the __________________?

A. Point velocity
B. Flow rate
C. Vacuum
D. Pressure

Read More Mcleod gauge is used to measure the __________________?
Process Control and Instrumentation

Accurate temperature measurement performance of a radiation pyrometer cannot be affected, if the ?

Accurate temperature measurement performance of a radiation pyrometer cannot be affected, if the ?

A. Enhancement or attenuation of radiation occurs in the sighting path
B. Object and surrounding are at almost the same temperature
C. Object has varying emissivity
D. Object is transparent

Read More Accurate temperature measurement performance of a radiation pyrometer cannot be affected, if the ?
Process Control and Instrumentation

The open loop transfer function of a control system is KR/(1 + TS). This represents ______________?

The open loop transfer function of a control system is KR/(1 + TS). This represents ______________?

A. A first order system
B. Dead time system
C. A first order time lag
D. A second order system

Read More The open loop transfer function of a control system is KR/(1 + TS). This represents ______________?
Process Control and Instrumentation

The thermal emf-temperature relationship of most thermocouples is_________________?

The thermal emf-temperature relationship of most thermocouples is_________________?

A. Linear
B. Parabolic
C. Exponential
D. Square root

Read More The thermal emf-temperature relationship of most thermocouples is_________________?
Process Control and Instrumentation

The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter D. and shape & number of corrugations. Its deflection is proportional to_______________?

The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter D. and shape & number of corrugations. Its deflection is proportional to_______________?

A. d
B. d2
C. d3
D. d4

Read More The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter D. and shape & number of corrugations. Its deflection is proportional to_______________?

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