Electrical Engineering MCQs

Page No. 53

The first order control system, which is well designed, has a_______________?


asmall bandwidth


bnegative time constant


clarge negative transfer function pole


dnone of the above



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


aSystems having complexities and non-linearities


bSystems having stability problems


cSystems having multiple input disturbances


dAll of the above


View Answer All of the above

Which of the following is an electromagnetically device ?


a Induction relay


bThermocouple


cLVDT


done of the above


View Answer LVDT

__________________can be extended to systems which are time-varying ?


aBode-Nyquist stability methods


b Transfer functions


cRoot locus design


dState model representatives



The effect of error damping is to______________?


aprovide larger settling lime


bdelay the response


c reduce steady state error


dany of the above



In pneumatic control systems the control valve used as final control element converts____________?


apressure signal to electric signal


bpressure signal to position change


celectric signal to pressure signal


dposition change to pressure signal



The phase lag produced by transportation relays_____________?


ais independent of frequency


bis inverseh’proportional to frequency


c increases linearly with frequency


d decreases linearly with frequency



Addition of zeros in transfer function causes which of the following ?


aLead-compensation


bLag-compensation


c Lead-lag compensation


dNone of the above


View Answer Lag-compensation

If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is_____________?


anot necessarily stable


bstable


c unstable


d always unstable



Velocity error constant of a system is measured when the input to the system is unit ___________ function?


a parabolic


bramp


c impulse


d step


View Answer ramp

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