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Automatic Control Systems

Automatic Control Systems
Lag compensation permits a high gain at low frequencies.

False
True

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Automatic Control Systems
Nyquist stability criterion uses open loop frequency response characteristics.

True
False

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Automatic Control Systems
In root locus analysis the breakaway and break in points

None of these
Either lie on the real axis or occur in complex conjugate pairs
Always occur in complex conjugate pairs
lie on the real axis

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Automatic Control Systems
Magnetic amplifier is used for

Voltage amplification
Power amplification
Current amplification
Frequency amplification

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Automatic Control Systems
The complicated shapes in the polar plots are only due to time constants in the numerator of transfer functions.

False
True

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Automatic Control Systems
Robotic manipulator arms mostly use

Hydraulic actuator
Pneumatic actuator
None of these
Electric motor actuator

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