Electrical control systems

[amp_mcq option1=”Induction relay” option2=”Thermocouple” option3=”LVDT” option4=”Any of the above E. None of the above” correct=”option1″]

Detailed SolutionWhich of the following is an electromagnetically device ?

[amp_mcq option1=”All the co-efficients can have zero value” option2=”All the co-efficients are always non-zero” option3=”Only one of the static error co-efficients has a finite non-zero value” option4=”None of the above” correct=”option4″]

Detailed SolutionWhich of the following statements is correct for any closed loop system ?

[amp_mcq option1=”The gain of the system should be decreased” option2=”The gain of the system should be increased” option3=”The number of poles to the loop transfer function should be increased” option4=”The number of zeros to the loop transfer function should be increased” correct=”option1″]

Detailed SolutionWhich of the following should be done to make an unstable system stable ?

[amp_mcq option1=”Systems having complexities and non-linearities” option2=”Systems having stability problems” option3=”Systems having multiple input disturbances” option4=”All of the above” correct=”option1″]

Detailed SolutionThe transfer function technique is considered as inadequate under which of the following conditions ?

[amp_mcq option1=”lag at all frequencies” option2=”lag at high frequencies and lead at low frequencies” option3=”lag at low frequencies and lead at high frequencies” option4=”none of the above” correct=”option1″]

Detailed SolutionA phase lag lead network introduces in the output

[amp_mcq option1=”The system is at rest and no energy is stored in any of its components” option2=”The system is working with zero stored energy” option3=”The system is working with zero reference signal” option4=”None of the above” correct=”option1″]

Detailed SolutionIn a system zero initial condition means that

[amp_mcq option1=”Constant current” option2=”Constant voltage” option3=”Constant current as well as constant voltage” option4=”Constant current, constant voltage and constant power E. None of the above” correct=”option3″]

Detailed SolutionAn amplidyne can give which of the following characteristics ?

[amp_mcq option1=”Lead-compensation” option2=”Lag-compensation” option3=”Lead-lag compensation” option4=”None of the above” correct=”option1″]

Detailed SolutionAddition of zeros in transfer function causes which of the following?

[amp_mcq option1=”Differential bellows and straingauge” option2=”Selsyn” option3=”Strain gauge” option4=”Strain gauge and potentiometer” correct=”option1″]

Detailed SolutionPressure error can be measured by which of the following ?

[amp_mcq option1=”increases” option2=”minimizes” option3=”does not have any effect on” option4=”any of the above” correct=”option2″]

Detailed SolutionIn a control system integral error compensation _______ steady state error