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CONTROL SYSTEMS

Control Systems
Force balancing equation of a mass element is (where, x = displacement)

 M dx/dt
 M *x
 any of the above
 M d2x/dt2

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Control Systems
Which of the following is/are the advantages of a closed loop control system?

 nether 1 nor 2.
 The closed loop systems are less affected by noise.
 both 1 and 2.
 The closed loop systems are accurate.

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Control Systems
Force balancing equation of a dash-pot element is (where, x = displacement)

 B dx/dt
 B *x
 B d2x/dt2
None of these

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Control Systems
Force balancing equation for elastic element (K) is (where, x = displacement)

 K d2x/dt2
 K *x
 K dx/dt
None of these

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Control Systems
Which of the following is/are the disadvantages of an open loop control system?

 Inaccurate.
 Unreliable.
 both 1 and 2.
None of these

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