Electrical control systems

31. A good control system has all the following features except

good stability
slow response
good accuracy
sufficient power handling capacity

Detailed SolutionA good control system has all the following features except

32. Increases the steady state accuracy.

Integrator
Differentiator
Phase lead compensator
Phase lag compensator

Detailed SolutionIncreases the steady state accuracy.

33. Which of the following can be measured by LVDT?

Displacement
Velocity
Acceleration
Any of the above

Detailed SolutionWhich of the following can be measured by LVDT?

34. The term backlash is associated with

servomotors
induction relays
gear trains
any of the above

Detailed SolutionThe term backlash is associated with

35. Static error coefficients are used as a measure of the effectiveness of closed loop systems for specified ________ input signal.

acceleration
velocity
position
all of the above

Detailed SolutionStatic error coefficients are used as a measure of the effectiveness of closed loop systems for specified ________ input signal.

36. In a control system the output of the controller is given to

Final control element
Amplifier
Comparator
Sensor

Detailed SolutionIn a control system the output of the controller is given to

37. In electrical pneumatic system analogy the current is considered analogous to

velocity
pressure
air flow
air flow rate

Detailed SolutionIn electrical pneumatic system analogy the current is considered analogous to

38. Is an open loop control system.

Ward Leonard control
Field controlled D.
motor C. Stroboscope
Metadyne

Detailed SolutionIs an open loop control system.

39. Which of the following is exhibited by Root locus diagrams ?

The poles of the transfer function for a set of parameter values
The bandwidth of the system
The response of a system to a step input
The frequency response of a system E. None of the above

Detailed SolutionWhich of the following is exhibited by Root locus diagrams ?

40. The first order control system, which is well designed, has a

small bandwidth
negative time constant
large negative transfer function pole
none of the above

Detailed SolutionThe first order control system, which is well designed, has a

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