Govt Exams Mock Test FREE | Online Quiz Competition

Q1. A shunt reactor at 200 MVAr is operated at 99% of its rated voltage and at 97% of its rated frequency. The reactive power absorbed by the reactor is

197.94 MVAr

202.08 MVAr

204.12 MVAr

195.96 MVAr

Q2. The \(Y_{bus}\) matrix of a two-bus power system having two identical parallel lines connected between them in p.u. is given as
\(Y_{bus}=\begin{bmatrix}-j8 & j20\\j20 & -j8\end{bmatrix}\)
The magnitude of the series reactance of each line in p.u. is

j0.2 p.u.

j0.3 p.u.

j0.4 p.u.

j0.1 p.u.

Q3. If the real power flow through the uncompensated line is 1 pu and the degree of series compensation ‘K’ is 0.5, the power flow through the series compensated line is

2 pu

0.5 pu

1 pu

4 pu

Q4. A 10 A, Type C Miniature Circuit Breaker (MCB) will trip at fault currents

less than 10 A

between 50 A and 100 A

greater than 100 A

between 10 A and 50 A

Q5. The Surge impedance of a 100km long underground cable is 50 Ω. The Surge impedance of a 40 km length of a similar cable would be

50 Ω

60 Ω

20 Ω

80 Ω

Q6. In a power system, the range of torque angle for which \(\frac{dp}{d\delta} \) is positive, lies between:

0° and 180°

0° and 90°

90° and -90°

0° and -90°

Q7. Which of the following buses is/are not PV buses?

voltage control buses

fixed shunt capacitor buses

reactive power support buses

both A and B

Q8. Statement 1: The admittance matrix will be singular for a power system network which is not having any shunt element.
Statement 2: The admittance matrix will be non-singular for a power system network which is not having any shunt element
Which of the aforementioned statements is true?

Statement 1

Statement 2

Both statements

Neither Statement 1 nor Statement 2

Q9. Which is correct, when the diversity factor of a plant is increases?

Plant Cost increases

Plant Cost decreases

Higher maximum demand

Higher capacity of plants

Q10. Which of the following statements are true?

Bus impedance matrix is a full matrix

Bus admittance matrix is a sparse matrix

Both A & B

Neither A nor B

Quiz

Year 2025

February
Week # 2 Quiz 5

Q1. A shunt reactor at 200 MVAr is operated at 99% of its rated voltage and at 97% of its rated frequency. The reactive power absorbed by the reactor is

Q2. The \(Y_{bus}\) matrix of a two-bus power system having two identical parallel lines connected between them in p.u. is given as
\(Y_{bus}=\begin{bmatrix}-j8 & j20\\j20 & -j8\end{bmatrix}\)
The magnitude of the series reactance of each line in p.u. is

Q3. If the real power flow through the uncompensated line is 1 pu and the degree of series compensation ‘K’ is 0.5, the power flow through the series compensated line is

Q4. A 10 A, Type C Miniature Circuit Breaker (MCB) will trip at fault currents

Q5. The Surge impedance of a 100km long underground cable is 50 Ω. The Surge impedance of a 40 km length of a similar cable would be

Q6. In a power system, the range of torque angle for which \(\frac{dp}{d\delta} \) is positive, lies between:

Q7. Which of the following buses is/are not PV buses?

Q8. Statement 1: The admittance matrix will be singular for a power system network which is not having any shunt element.
Statement 2: The admittance matrix will be non-singular for a power system network which is not having any shunt element
Which of the aforementioned statements is true?

Q9. Which is correct, when the diversity factor of a plant is increases?

Q10. Which of the following statements are true?

Quiz

Year 2025

February Week # 1 Expire on 28 Feb 2025

February Week # 2 Expire on 07 Mar 2025

February Week # 3 Expire on 14 Mar 2025

February Week # 4 Expire on 21 Mar 2025

February Week # 2 Quiz 5

Q1. A shunt reactor at 200 MVAr is operated at 99% of its rated voltage and at 97% of its rated frequency. The reactive power absorbed by the reactor is

Q2. The \(Y_{bus}\) matrix of a two-bus power system having two identical parallel lines connected between them in p.u. is given as \(Y_{bus}=\begin{bmatrix}-j8 & j20\\j20 & -j8\end{bmatrix}\) The magnitude of the series reactance of each line in p.u. is

Q3. If the real power flow through the uncompensated line is 1 pu and the degree of series compensation ‘K’ is 0.5, the power flow through the series compensated line is

Q4. A 10 A, Type C Miniature Circuit Breaker (MCB) will trip at fault currents

Q5. The Surge impedance of a 100km long underground cable is 50 Ω. The Surge impedance of a 40 km length of a similar cable would be

Q6. In a power system, the range of torque angle for which \(\frac{dp}{d\delta} \) is positive, lies between:

Q7. Which of the following buses is/are not PV buses?

Q8. Statement 1: The admittance matrix will be singular for a power system network which is not having any shunt element. Statement 2: The admittance matrix will be non-singular for a power system network which is not having any shunt element Which of the aforementioned statements is true?

Q9. Which is correct, when the diversity factor of a plant is increases?

Q10. Which of the following statements are true?

Record & Track Your Performance

February
Week # 2 Quiz 5

Q2. The \(Y_{bus}\) matrix of a two-bus power system having two identical parallel lines connected between them in p.u. is given as
\(Y_{bus}=\begin{bmatrix}-j8 & j20\\j20 & -j8\end{bmatrix}\)
The magnitude of the series reactance of each line in p.u. is

Q8. Statement 1: The admittance matrix will be singular for a power system network which is not having any shunt element.
Statement 2: The admittance matrix will be non-singular for a power system network which is not having any shunt element
Which of the aforementioned statements is true?