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Automatic Control Systems

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

True
False

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Automatic Control Systems
Which of the following is open loop system?

System for controlling antirocket missiles
Aqualing
Respiratory system of animal
Wind screen wiper

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Automatic Control Systems
The permanent magnet field system of brushless dc servo- motor is generally on

Stator
Partly on stator and partly on rotor
Rotor
Either (a) or (b)

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Automatic Control Systems
Transport lag usually exists in

Pneumatic systems
Thermal systems
Thermal, hydraulic and pneumatic systems
Hydraulic systems and thermal systems

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Automatic Control Systems
Which of the following is used to obtain output position in a position control system?

Thermistor
Load cell
Synchro
Strain gauge

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

True
False

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