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Control Systems MCQs

Free 95+ Control Systems MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Practise below with answers and explanations.

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95 questions in this list. Select an option to practice, or open a question for the full page with explanation.

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Control Systems

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Correct options are highlighted when revealed.

1.Which mathematical tools connect the frequency domain with the time domain?

Both Laplace Transform and Fourier IntegralOnly Laplace TransformOnly Fourier IntegralEither Laplace Transform or Fourier Integral

2.What kind of pole is present at the origin in a type 1 system?

absence of any polecombined polesingle simple polea pair of poles

3.At which point does a conditionally stable system demonstrate weak stability?

At low frequency rangesWhen the open loop gain decreasesWhen the open loop gain increasesNone of these

4.In the majority of systems, what is the effect of increasing the gain on the damping ratio?

a decrease in the damping ratioan increase in the damping ratiothe damping ratio remains unchangedno effect on the damping ratiocannot be determined

5.How does a low friction coefficient affect the velocity lag error in a system?

It decreases the velocity lag errorIt increases the velocity lag errorIt enhances the response speedIt lowers the system's time constant

6.Which type of compensator is suitable for enhancing the damping in a system that is significantly underdamped?

Phase-lead compensatorPhase-lag compensatorBoth phase-lead and phase-lag compensatorsEither phase-lead or phase-lag compensatorsNone of the above

7.What parameter is typically measured using a tachogenerator?

Rate of change of velocityRotational speedBoth velocity and accelerationPosition or displacementNone of these

8.What best describes the proportional band of a controller?

The span of air output corresponding to the measured variable shifting from its highest to lowest valueThe interval of measured variable values relative to the setpointThe range of measured variable values over which the air output transitions from full to zeroAny of the previously mentioned definitions

9.Which device is specifically designed to convert coordinate information from one form to another?

Microsyn transmitterSelsyn systemSynchro-resolverSynchro-transformerNone of the above

10.What type of phase shift does a phase lag-lead network produce at its output?

Lag across the entire frequency rangeLag at higher frequencies and lead at lower frequenciesLag at lower frequencies and lead at higher frequenciesNone of these

11.What does it mean when a system's initial conditions are defined as zero?

The system is inactive and contains no stored energyThe system operates normally with a given input signalThe system functions properly with no input signal appliedThe system is stationary but has energy stored withinThe system is unstable and energy is dissipated

Control Systems MCQs

About this subject

1.Which mathematical tools connect the frequency domain with the time domain?

2.What kind of pole is present at the origin in a type 1 system?

3.At which point does a conditionally stable system demonstrate weak stability?

4.In the majority of systems, what is the effect of increasing the gain on the damping ratio?

5.How does a low friction coefficient affect the velocity lag error in a system?

6.Which type of compensator is suitable for enhancing the damping in a system that is significantly underdamped?

7.What parameter is typically measured using a tachogenerator?

8.What best describes the proportional band of a controller?

9.Which device is specifically designed to convert coordinate information from one form to another?

10.What type of phase shift does a phase lag-lead network produce at its output?

11.What does it mean when a system's initial conditions are defined as zero?

12.If a system's initial conditions are defined as zero, what does this indicate about the system?

13.Why is a differentiator typically excluded from control system designs?

14.How does integral error compensation in a control system affect the steady-state error?

15.Which characteristic is typically produced by an amplidyne?

16.Which device directly transforms temperature into an electrical voltage?

17.What information do Root locus plots typically display?

18.What type of output does a thermocouple produce?

19.Which method is used to derive the transfer function from a system?

20.Which type of input signal is most effective for thoroughly testing a system's response?

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