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Automatic Control Systems

Automatic Control Systems
In Bode plots the frequency at which two asymptotes meet is called corner frequency.

False
True

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

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

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Automatic Control Systems
In control systems the output of sensor usually, is

Digital electrical signal
Mechanical signal
Analog or digital electrical signal
Analog electrical signal

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Automatic Control Systems
Magnetic amplifier is used for

Current amplification
Voltage amplification
Frequency amplification
Power amplification

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Automatic Control Systems
A conditionally stable system is stable for the value of gain between two critical values. It is unstable if

The gain is decreased below lower critical value
The gain is increased beyond upper critical value
None of these
Both A and B

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

True
False

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