Electrical control systems

1. When the initial conditions of a system are specified to be zero it implies that the system is

At rest without any energy stored in it
Working normally with reference input
Working normally with zero reference input
At rest but stores energy

Detailed SolutionWhen the initial conditions of a system are specified to be zero it implies that the system is

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2. The on-off controller is a _____ system.

digital
linear
non-linear
discontinuous

Detailed SolutionThe on-off controller is a _____ system.

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3. In a stable control system backlash can cause which of the following ?

Underdamping
Overdamping
Poor stability at reduced values of open loop gain
Low-level oscillations

Detailed SolutionIn a stable control system backlash can cause which of the following ?

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4. Signal will become zero when the feedback signal and reference signs are equal.

Input
Actuating
Feedback
Reference

Detailed SolutionSignal will become zero when the feedback signal and reference signs are equal.

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5. The type-2 system has ________ at the origin.

No net pole
Net pole
Simple pole
Two poles

Detailed SolutionThe type-2 system has ________ at the origin.

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6. Which of the following is the best method for determining the stability and transient response ?

Root locus
Bode plot
Nyquist plot
None of the above

Detailed SolutionWhich of the following is the best method for determining the stability and transient response ?

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7. By which of the following the control action is determined when a man walks along a path?

Brain
Hands
Legs
Eyes

Detailed SolutionBy which of the following the control action is determined when a man walks along a path?

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8. A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?

Clutch
Eyes
Needle of the speedometer
Steering wheel E. None of the above

Detailed SolutionA car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?

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9. The temperature, under thermal and electrical system analogy, is considered analogous to

voltage
current
capacitance
charge E. none of the above

Detailed SolutionThe temperature, under thermal and electrical system analogy, is considered analogous to

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10. . . . . . . . . can be extended to systems which are time-varying?

Bode-Nyquist stability methods
Transfer functions
Root locus design
State model representatives

Detailed Solution. . . . . . . . can be extended to systems which are time-varying?

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