Zero System Effect MCQs : This section focuses on the "Zero System Effect". These Multiple Choice Questions (MCQs) should be practiced to improve the Zero System Effect skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
_____________ is not a final control element.
A. Control valve
B. Potentiometer
C. Electro-pneumatic converter
D. Servomotor
Question 2
A control system is generally met with the time response specifications:
A. Steady state accuracy
B. Damping factor
C. Setting time
D. All of the mentioned
Question 3
A plant is controlled by a proportional controller, if time delay element is introduced in the loop its:
A. Phase margin remains the same
B. Phase margin increases
C. Phase margin decreases
D. Gain margin increases
Question 4
Addition of zero increases the stability.
A. TRUE
B. FALSE
Question 5
As zero moves sufficiently left from the origin the effect of zero becomes less pronounced.
A. TRUE
B. FALSE
Question 6
Damping factor specifies:
A. Peak overshot to step input.
B. Steady state error
C. Damping ratio
D. Natural frequency
Question 7
If number of poles are greater than number of zeroes then the system is known as ______________
A. Stable system
B. Unstable system
C. Minimum phase system
D. Non-minimum phase system
Question 8
If rise time is also taken into consideration it should be ____________ to the settling time.
A. Inconsistent
B. Consistent
C. Perfect
D. Unique
Question 9
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
Question 10
Pressure error can be measured by which of the following?
A. Differential bellows and strain gauge
B. Selsyn
C. Strain gauge
D. Strain gauge and potentiometer
Question 11
Steady state accuracy is determined by suitable choice of____________
A. Steady error
B. Error constants
C. Damping
D. Transient error
Question 12
Steady state accuracy specified in terms of:
A. Steady state error
B. Damping ratio
C. Natural frequency
D. All of the mentioned
Question 13
Which of the following can be measured by the use of a tacho-generator?
A. Acceleration
B. Speed
C. Speed and acceleration
D. Displacement
Question 14
Which of the following is the definition of proportional band of a controller?
A. The range of air output as measured variable varies from maximum to minimum
B. The range of measured variables from set value
C. The range of measured variables through which the air output changes from maximum to minimum
D. All of the mentioned
Question 15
Zeroes are defined as:
A. Roots of the denominator of the closed loop transfer function
B. Roots of the numerator of the closed loop transfer function
C. Parts of the numerator
D. Parts of the denominator