Govt Exams Mock Test FREE | Online Quiz Competition

Q1. Feedback oscillations have a closed loop gain of (where G, H are gain of forward and feedback path)

\(\frac{G}{1 – GH}\)

\(\frac{G}{1 + GH}\)

\(\frac{G}{1 \pm GH}\)

\(\frac{H}{1 + GH}\)

Q2. The characteristic equation of a system is given as \(s^3+25s^2 +10s+50=0\). What is the number of the roots in the right half s-plane and the imaginary axis respectively ?

1,1

1,2

0,0

2,1

Q3. Which system cannot be represented by a transfer function?

\(y=mx+c\)

\(y=\frac{d^2x}{dt^2}\)

\(y=\int_0^tx(u)du\)

\(y=x+\frac{dx}{dt}\)

Q4. With regard to the filtering capacity the lead compensator and lag compensator are respectively:

Low pass and high pass filter

Both low pass filters

Both high pass filters

High pass and low pass filter

Q5. The dc gain of a system represented by the transfer function \(\frac{12}{(s + 2) (s + 3)}\) is __________.

1

2

5

10

Q6. A control system with proportional-integral-derivative (PID) controller uses feedback to:

Increase the number of system variables

Eliminate disturbances

Adjust the setpoint only

Maintain desired performance despite disturbances

Q7. A proportional plus derivative controller

has high sensitivity

increases the stability

makes system unstable

improves the steady state accuracy

Q8. If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is

not necessarily stable

stable

unstable

always unstable

Q9. If gain of the system is increased, then

Roots move away from the zeros

Roots move towards the origin of the S-plot

Roots move away from the poles

None of these

Q10. The mathematical model is not used to represent the control systems model.

Transfer function model

State space model

Differential equation model

Integration equation model

Quiz

Year 2025

March
Week # 1 Quiz 4

Q1. Feedback oscillations have a closed loop gain of (where G, H are gain of forward and feedback path)

Q2. The characteristic equation of a system is given as \(s^3+25s^2 +10s+50=0\). What is the number of the roots in the right half s-plane and the imaginary axis respectively ?

Q3. Which system cannot be represented by a transfer function?

Q4. With regard to the filtering capacity the lead compensator and lag compensator are respectively:

Q5. The dc gain of a system represented by the transfer function \(\frac{12}{(s + 2) (s + 3)}\) is __________.

Q6. A control system with proportional-integral-derivative (PID) controller uses feedback to:

Q7. A proportional plus derivative controller

Q8. If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is

Q9. If gain of the system is increased, then

Q10. The mathematical model is not used to represent the control systems model.

Quiz

Year 2025

February Week # 3 Expire on 14 Mar 2025

February Week # 4 Expire on 21 Mar 2025

March Week # 1 Expire on 31 Mar 2025

March Week # 2 Expire on 07 Apr 2025

March Week # 1 Quiz 4

Q1. Feedback oscillations have a closed loop gain of (where G, H are gain of forward and feedback path)

Q2. The characteristic equation of a system is given as \(s^3+25s^2 +10s+50=0\). What is the number of the roots in the right half s-plane and the imaginary axis respectively ?

Q3. Which system cannot be represented by a transfer function?

Q4. With regard to the filtering capacity the lead compensator and lag compensator are respectively:

Q5. The dc gain of a system represented by the transfer function \(\frac{12}{(s + 2) (s + 3)}\) is __________.

Q6. A control system with proportional-integral-derivative (PID) controller uses feedback to:

Q7. A proportional plus derivative controller

Q8. If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is

Q9. If gain of the system is increased, then

Q10. The mathematical model is not used to represent the control systems model.

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March
Week # 1 Quiz 4