Question 31 : Which of the following are the not characteristics of the closed loop systems?
1. It does not compensate for disturbance
2. It reduces the sensitivity of plant-parameter variations
3. It does not involve output measurements
4. It does not has the ability to control the system transient response
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Question 32 : What should be the nature of bandwidth for a good control system?
1. Large
2. Small
3. Medium
4. All of the mentioned
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Question 33 : Proportional controller
1. Decreases steady state error and improves stability
2. Rise time decreases
3. Transient response becomes poorer
4. Increases steady state error
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Question 34 : Rate mode controller is also known as ______________ controller mode.
1. Anticpatory
2. Delay
3. Integral
4. Derivative
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Question 35 : Controllers play the following role in control system:
1. They amplify the signals going to the actuator
2. They act on the error signal coming out of the summing junction and output a suitable to the actuator
3. They try to reduce steady state error optimizes overshoot.
4. All of the mentioned
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Question 36 : In time domain the measure of relative stability is:
1. Damping factor
2. Maximum peak overshoot
3. Damping factor and Maximum peak overshoot
4. Speed of response
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Question 37 : What is the value of steady state error in closed loop control systems?
1. Zero
2. Unity
3. Infinity
4. Unpredictable
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Question 38 : Proportional controller:
1. Introduces offset
2. Increases bandwidth
3. Increases margin of stability
4. Reduces velocity constant
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Question 39 : Lead compensation leads to:
1. Increases bandwidth
2. Attenuation
3. Increases damping factor
4. Second order
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Question 40 : PD controller is used to compensate system. Compared to the uncompensated system, the compensated system has:
1. A higher type number
2. Reduced damping
3. Higher noise amplification
4. Large transient overshoot
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