Govt Exams Mock Test FREE | Online Quiz Competition

Q1. The damping ratio of a second-order system affects its:

Frequency of oscillation

Natural frequency

Settling time

Steady-state error

Q2. The necessary condition of stability are:

Coefficient of characteristic equation must be real and have the same sign

Coefficient of characteristic equation must be non-zero

Both of the mentioned

Coefficient of characteristic equation must be zero

Q3. Which type of node comprises incoming as well as outgoing branches?

Source node

Sink node

Chain node

Main node

Q4. Which of the following is not correct for an open loop control system?

Easy to maintain

Has a feedback element

Simple construction

Less expensive

Q5. Root locus is used to calculate

Marginal Stability

Absolute Stability

Relative Stability

Conditional Stability

Q6. In an automatic control system which of the following elements is not used ?

Error detector

Final control element

Sensor

Oscillator

Q7. The frequency and time domain are related through which of the following?

Laplace Transform and Fourier Integral

Laplace Transform

Fourier Integral

Either (b) or (c)

Q8. The term "closed-loop gain" in a control system refers to the gain of the:

Controller

Actuator

Plant

Entire closed-loop system

Q9. The rotor of a four-pole, 50 Hz slip-ring induction motor has a resistance of \(0.2\:\Omega\) per phase and runs at 1425 rpm at full-load. Determine the external resistance per phase which must be added to reduce the speed to 1200 rpm, the torque remaining same in both the cases.

\(0.8\:\Omega\)

\(0.2\:\Omega\)

\(0.4\:\Omega\)

\(0.6\:\Omega\)

Q10. A 3-phase induction motor draws a current of 50 A from mains when started by direct switching. If an auto transformer with 60% tapping is used for starting, the current drawn from the mains will be

50 A

18 A

36 A

83.3 A

Quiz

Year 2024

October
Week # 1 Quiz 5

Q1. The damping ratio of a second-order system affects its:

Q2. The necessary condition of stability are:

Q3. Which type of node comprises incoming as well as outgoing branches?

Q4. Which of the following is not correct for an open loop control system?

Q5. Root locus is used to calculate

Q6. In an automatic control system which of the following elements is not used ?

Q7. The frequency and time domain are related through which of the following?

Q8. The term "closed-loop gain" in a control system refers to the gain of the:

Q9. The rotor of a four-pole, 50 Hz slip-ring induction motor has a resistance of \(0.2\:\Omega\) per phase and runs at 1425 rpm at full-load. Determine the external resistance per phase which must be added to reduce the speed to 1200 rpm, the torque remaining same in both the cases.

Q10. A 3-phase induction motor draws a current of 50 A from mains when started by direct switching. If an auto transformer with 60% tapping is used for starting, the current drawn from the mains will be

Quiz

Year 2024

September Week # 4 Expire on 21 Oct 2024

October Week # 1 Expire on 31 Oct 2024

October Week # 2 Expire on 07 Nov 2024

October Week # 3 Expire on 14 Nov 2024

October Week # 1 Quiz 5

Q1. The damping ratio of a second-order system affects its:

Q2. The necessary condition of stability are:

Q3. Which type of node comprises incoming as well as outgoing branches?

Q4. Which of the following is not correct for an open loop control system?

Q5. Root locus is used to calculate

Q6. In an automatic control system which of the following elements is not used ?

Q7. The frequency and time domain are related through which of the following?

Q8. The term "closed-loop gain" in a control system refers to the gain of the:

Q9. The rotor of a four-pole, 50 Hz slip-ring induction motor has a resistance of \(0.2\:\Omega\) per phase and runs at 1425 rpm at full-load. Determine the external resistance per phase which must be added to reduce the speed to 1200 rpm, the torque remaining same in both the cases.

Q10. A 3-phase induction motor draws a current of 50 A from mains when started by direct switching. If an auto transformer with 60% tapping is used for starting, the current drawn from the mains will be

Record & Track Your Performance

October
Week # 1 Quiz 5