Govt Exams Mock Test FREE | Online Quiz Competition

Q1. A generating station has an installed capacity of 50,000 kW and delivers \(220 \times 10^6\) units per annum. If the annual fixed charges are Rs.160 per kW installed capacity and running charges are 4 paise per kWh, the cost per unit generated is

4.38 paise

5.92 paise

7.64 paise

11.72 paise

Q2. For the bus admittance matrix \(Y_{bus}\) of a \(4\)-bus system given in per unit, the buses having shunt elements are
\(Y_{bus} = j\begin{bmatrix}-5 & 2 & 2.5 & 0 \\2 & -10 & 2.5 & 4 \\2.5 & 2.5 & -9 & 4 \\0 & 4 & 4 & -8 \end{bmatrix}\)

3 & 4

2 & 3

1 & 2

1, 2 & 4

Q3. Murray loop test is performed on a faulty cable 300 m long. At balance, the resistance connected to the faulty core was set at \(R=15\:\Omega\) and the resistance of the resistor connected to the sound core was \(R=45\:\Omega\). Calculate the distance of the fault point from the test end.

75 m

450 m

225 m

150 m

Q4. If the length of a cable is doubled, its capacitance

becomes double

becomes one-fourth

becomes one-half

remains unchanged

Q5. If a 3 - phase 4 wire, Star connected load takes line currents of \(10 \angle 60^\circ \:A, \: 10 \angle -60^\circ \:A, \& \: 10 \angle 0^\circ \:A \), the neutral current is given by

10 A

15 A

5 A

20 A

Q6. What is the effect of increase in solar irradiance level on solar PV cell open circuit voltage and short circuit current

the open circuit voltage decreases and short circuit current increase

Both the open circuit voltage and short circuit current increase

Both the open circuit voltage and short circuit current decrease

the open circuit voltage increases and short circuit current decrease

Q7. Shunt capacitors in a substation

consumes lagging VAR

delivers lagging VAR

consume active power

Deliver active power

Q8. The frequency of voltage generated, in case of generators ,can be increased by

adjusting the governor

using reactors

increasing the load

reducing the terminal voltage

Q9. A three phase 33 KV, oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is

1200 A

3600 A

35 KA

104.8 KA

Q10. Resistance switching is normally restored in case of__________.

Minimum oil circuit breakers

Bulk oil circuit breakers

Air blast circuit breakers

\(SF_6\) circuit breakers

Quiz

Year 2025

January
Week # 2 Quiz 5

Q1. A generating station has an installed capacity of 50,000 kW and delivers \(220 \times 10^6\) units per annum. If the annual fixed charges are Rs.160 per kW installed capacity and running charges are 4 paise per kWh, the cost per unit generated is

Q2. For the bus admittance matrix \(Y_{bus}\) of a \(4\)-bus system given in per unit, the buses having shunt elements are
\(Y_{bus} = j\begin{bmatrix}-5 & 2 & 2.5 & 0 \\2 & -10 & 2.5 & 4 \\2.5 & 2.5 & -9 & 4 \\0 & 4 & 4 & -8 \end{bmatrix}\)

Q3. Murray loop test is performed on a faulty cable 300 m long. At balance, the resistance connected to the faulty core was set at \(R=15\:\Omega\) and the resistance of the resistor connected to the sound core was \(R=45\:\Omega\). Calculate the distance of the fault point from the test end.

Q4. If the length of a cable is doubled, its capacitance

Q5. If a 3 - phase 4 wire, Star connected load takes line currents of \(10 \angle 60^\circ \:A, \: 10 \angle -60^\circ \:A, \& \: 10 \angle 0^\circ \:A \), the neutral current is given by

Q6. What is the effect of increase in solar irradiance level on solar PV cell open circuit voltage and short circuit current

Q7. Shunt capacitors in a substation

Q8. The frequency of voltage generated, in case of generators ,can be increased by

Q9. A three phase 33 KV, oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is

Q10. Resistance switching is normally restored in case of__________.

Quiz

Year 2025

December Week # 3 Expire on 14 Jan 2025

December Week # 4 Expire on 21 Jan 2025

January Week # 1 Expire on 31 Jan 2025

January Week # 2 Expire on 07 Feb 2025

January Week # 2 Quiz 5

Q1. A generating station has an installed capacity of 50,000 kW and delivers \(220 \times 10^6\) units per annum. If the annual fixed charges are Rs.160 per kW installed capacity and running charges are 4 paise per kWh, the cost per unit generated is

Q2. For the bus admittance matrix \(Y_{bus}\) of a \(4\)-bus system given in per unit, the buses having shunt elements are \(Y_{bus} = j\begin{bmatrix}-5 & 2 & 2.5 & 0 \\2 & -10 & 2.5 & 4 \\2.5 & 2.5 & -9 & 4 \\0 & 4 & 4 & -8 \end{bmatrix}\)

Q3. Murray loop test is performed on a faulty cable 300 m long. At balance, the resistance connected to the faulty core was set at \(R=15\:\Omega\) and the resistance of the resistor connected to the sound core was \(R=45\:\Omega\). Calculate the distance of the fault point from the test end.

Q4. If the length of a cable is doubled, its capacitance

Q5. If a 3 - phase 4 wire, Star connected load takes line currents of \(10 \angle 60^\circ \:A, \: 10 \angle -60^\circ \:A, \& \: 10 \angle 0^\circ \:A \), the neutral current is given by

Q6. What is the effect of increase in solar irradiance level on solar PV cell open circuit voltage and short circuit current

Q7. Shunt capacitors in a substation

Q8. The frequency of voltage generated, in case of generators ,can be increased by

Q9. A three phase 33 KV, oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is

Q10. Resistance switching is normally restored in case of__________.

Record & Track Your Performance

January
Week # 2 Quiz 5

Q2. For the bus admittance matrix \(Y_{bus}\) of a \(4\)-bus system given in per unit, the buses having shunt elements are
\(Y_{bus} = j\begin{bmatrix}-5 & 2 & 2.5 & 0 \\2 & -10 & 2.5 & 4 \\2.5 & 2.5 & -9 & 4 \\0 & 4 & 4 & -8 \end{bmatrix}\)