Related Questions

In a stable control system saturation can cause which of the following ?
A Low-level oscillations
B High-level oscillations
C Conditional stability
D Overdamping
The backlash for spur gears depends upon
A module and (
B pitch line velocity
C tooth profile
D both (a) and (b)
The term backlash is associated with
A servomotors
B induction relays
C gear trains
D any of the above
A conditionally stable system is stable for the value of gain between two critical values. It is unstable if
A The gain is increased beyond upper critical value
B The gain is decreased below lower critical value
C Both A and B
D None of the above
For a feed back control system to be stable, the
A Roots of the characteristic equation should be real
B Poles of the closed loop transfer function should lie in the left half of the complex plane
C Bode plots of the corresponding open loop transfer function should monotoni-cally decrease
D Poles of the closed loop transfer function should lie in the right half of the complex plane
You have configured a Group Policy Object (GPO) for the marketing oranization unit (OU) to prevent users from accessing My Network Places and from running System in Control Panel. You want the Managers Domain Local Group to be able to access My Network Places, but you still want to prevent them from running System in Control Panel. What should you do?
A Add the Managers group to the access control list of the GPO. Disable the permission of the managers group to read and apply the Group Policy
B Add the Managers group to the access control list of the GPO. Deny the permission of the managers group to read and apply the Group Policy
C Create a second GPO in the OU. Add the Managers group to the access control list. Allow the managers group to apply the Group Policy. Deny the Authenticated Users group permission to read and apply th
D Create a second GPO in the OU. Add the Managers group to the access control list. Allow the managers group to apply the Group Policy. Disable the Authenticated Users group permission to read and apply
E None of above
In pneumatic control systems the control valve used as final control element converts
A Pressure signal to electric signal
B Pressure signal to position change
C Electric signal to pressure signal
D Position change to pressure signal
Which of the following should be done to make an unstable system stable ?
A The gain of the system should be decreased
B The gain of the system should be increased
C The number of poles to the loop transfer function should be increased
D The number of zeros to the loop transfer function should be increased
For a stable system having two or more gain crossover frequencies the phase margin is measured at the highest crossover frequency.
A True
B False
A conditionally stable system exhibits poor stability at
A low frequencies
B reduced values of open loop gain
C increased values of open loop gain
D none of the above

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