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Automatic Control Systems

Automatic Control Systems
Nichol’s chart is symmetric about – 180° axis.

True
False

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Automatic Control Systems
M circles are symmetrical with respect to

M = 1 straight line
M = 1 straight line and imaginary axis
M = 1 straight line and real axis
Real and imaginary axis

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Automatic Control Systems
In a simple on-off controller with differential gap, the magnitude of differential gap determines

Both (a) and (b)
The life of controller
The level of accuracy
Neither (a) nor (b)

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Automatic Control Systems
Which of the following can be used as a rotating amplifier in a control system? 1. Amplidyne 2. Separately excited dc generator 3. Synchro 4. Self excited dc generator

3 and 4
All
1 and 2
1, 2 and 3

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Automatic Control Systems
Temperature is analogous to

Flux
None of these
Voltage
Charge

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Automatic Control Systems
Integral control action

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

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