Electrical control systems

[amp_mcq option1=”The range of air output as measured variable varies from maximum to minimum” option2=”The range of measured variables from set value” option3=”The range of measured variables through which the air output changes from maximum to minimum” option4=”Any of the above E. None of the above” correct=”option3″]

Detailed SolutionWhich of the following is the definition of proportional band of a controller ?

[amp_mcq option1=”oscillations” option2=”step input” option3=”negative sign” option4=”positive sign” correct=”option1″]

Detailed SolutionRegenerative feedback implies feedback with

[amp_mcq option1=”Servomechanism” option2=”Feedback” option3=”Output pattern” option4=”Input pattern” correct=”option2″]

Detailed SolutionA closed loop system is distinguished from open loop system by which of the following ?

[amp_mcq option1=”feedback” option2=”stimulus” option3=”signal” option4=”gain control” correct=”option1″]

Detailed SolutionAny externally introduced signal affecting the controlled output is called a

[amp_mcq option1=”Microsyn” option2=”Selsyn” option3=”Synchro-resolver” option4=”Synchro-transformer” correct=”option3″]

Detailed SolutionWhich of the following devices is used for conversion of co-ordinates ?

[amp_mcq option1=”Thermocouple” option2=”Potentiometer” option3=”Gear train” option4=”LVDT E. None of the above” correct=”option1″]

Detailed SolutionDirectly converts temperature into voltage.

[amp_mcq option1=”The system is relatively stable” option2=”The system is highly stable” option3=”The system is highly oscillatory” option4=”None of the above” correct=”option4″]

Detailed SolutionWhich of the following statements is correct for a system with gain margin close to unity or a phase margin close to zero ?

[amp_mcq option1=”Linear and time-in variant systems” option2=”Linear and time-variant systems” option3=”Linear systems” option4=”Non-linear systems E. None of the above” correct=”option1″]

Detailed SolutionThe transfer function is applicable to which of the following ?

[amp_mcq option1=”inertia forces” option2=”internal forces” option3=”stored energy” option4=”friction” correct=”option1″]

Detailed SolutionThe transient response of a system is mainly due to

[amp_mcq option1=”Transient response” option2=”Error response” option3=”Dynamic response” option4=”Either of the above” correct=”option1″]

Detailed SolutionThe initial response when tne output is not equal to input is called