DFCCIL EE/EC Control Systems QUIZ - 6

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Question 1

For derivative control action, the actuating signal consists of proportional error signal with addition of

• Aderivative of the error signals
• Bintegral of the error signals
• Csteady-state error
• Da constant which is a function of the system type

Question 2

A phase lead compensator has its transfer function, The maximum phase lead and the corresponding frequency, respectively are nearly

• Asin^–1 (0.9) and 6r/s
• Bsin^–1 (0.82) and 4 r/s
• Csin^–1 (0.9) and 4 r/s
• Dsin^–1 (0.82) and 6 r/s

Question 3

Which among the following statement is correct in terms of compensated PD controller?

• AIt has high number
• BIt has lower damping
• CIt carries more noise amplification
• DIt carries high moving overshoot

Question 4

The transfer function of a controller is given as where are constant. What type of controller is this?

• AProportional
• BProportional plus integral
• CProportional plus derivative.
• DIntegral plus derivative.

Question 5

A proportional integral (PI) controller results in which of the following?

• AImproves the transient response without affecting steady state response
• BImproves the steady state response without affecting transient response
• CImproves both transient response and steady state response
• DImproves the steady state response while marginally affecting transient response, for well designed control parameters.

Question 6

Which one of the following is an advantage of a PD controller in terms of damping () and natural frequency (ω_n)?

• Aremains fixed but ω_n increases.
• Bremains fixed but ω_n decreases.
• Cω_n remains fixed but increases.
• Dω_n remains fixed but decreases.

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