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Automatic Control Systems

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

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

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Automatic Control Systems
For any transfer function, the constant phase angle loci are

Either (a) or (b)
Neither (a) nor (b)
A family of circles
A family of straight lines

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Automatic Control Systems
Integral control action

Removes offset
Neither (a) nor (b)
Both (a) and (b)
May lead to oscillatory response

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Automatic Control Systems
Robotic manipulator arms mostly use

Electric motor actuator
None of these
Pneumatic actuator
Hydraulic actuator

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

True
False

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Automatic Control Systems
Transport lag usually exists in

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

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