Govt Exams Mock Test FREE | Online Quiz Competition

Q1. To increase the capacity of a transmission line for transmitting power, which of the following must be decreased?

Capacitance

Line inductance

Voltage

All of the above

Q2. A three phase 50 Hz overhead line has regularly transposed conductors equilaterally placed at 4 m spacing. The capacitance is 0.01 μF/km. Recalculate the capacitance per km to neutral when conductors are in the same horizontal plane with successive spacing of 4m and are regularly transposed.

0.096 μF/km

9.6 μF/km

0.96 μF/km

0.0096 μF/km

Q3. Which of the following line is considered in capacitor lumped type?

Short transmission line

Medium transmission line

Long transmission line

All of these

Q4. A generating station has a maximum demand of 25 MW, a load factor of 60%, then the average demand MW will be

15

20

30

None of the above

Q5. A cable has inductance of \(0.22 \: mH/km\) and capacitance of \(0.202 \: \mu F/km\). The surge impedance of the cable is

\(20 \Omega\)

\(33 \Omega\)

\(40 \Omega\)

\(30 \Omega\)

Q6. In a.c. generator, the reverse power protection is applied for

over speed

excitation failure

turbine failure

stator earth fault

Q7. Surge impedance loading can be increased by

increasing of voltage level

increasing of capacitance value

decreasing of inductance value

all of the above

Q8. The neutral of the power system may be connected to earth

directly

through a resistor

through a reactor

Any of the above

Q9. The steady state stability limit is

Smaller than the transient stability limit.

Larger than the transient stability limit.

Equal to the transient stability limit.

Zero

Q10. In a circuit breaker, the active recovery voltage depends on

power factor

armature reaction

circuit conditions

all of the above

Quiz

Year 2024

January
Week # 3 Quiz 1

Q1. To increase the capacity of a transmission line for transmitting power, which of the following must be decreased?

Q2. A three phase 50 Hz overhead line has regularly transposed conductors equilaterally placed at 4 m spacing. The capacitance is 0.01 μF/km. Recalculate the capacitance per km to neutral when conductors are in the same horizontal plane with successive spacing of 4m and are regularly transposed.

Q3. Which of the following line is considered in capacitor lumped type?

Q4. A generating station has a maximum demand of 25 MW, a load factor of 60%, then the average demand MW will be

Q5. A cable has inductance of \(0.22 \: mH/km\) and capacitance of \(0.202 \: \mu F/km\). The surge impedance of the cable is

Q6. In a.c. generator, the reverse power protection is applied for

Q7. Surge impedance loading can be increased by

Q8. The neutral of the power system may be connected to earth

Q9. The steady state stability limit is

Q10. In a circuit breaker, the active recovery voltage depends on

Quiz

Year 2024

July Week # 1 Expire on 31 Jul 2024

July Week # 2 Expire on 07 Aug 2024

July Week # 3 Expire on 14 Aug 2024

July Week # 4 Expire on 21 Aug 2024

January Week # 3 Quiz 1

Q1. To increase the capacity of a transmission line for transmitting power, which of the following must be decreased?

Q2. A three phase 50 Hz overhead line has regularly transposed conductors equilaterally placed at 4 m spacing. The capacitance is 0.01 μF/km. Recalculate the capacitance per km to neutral when conductors are in the same horizontal plane with successive spacing of 4m and are regularly transposed.

Q3. Which of the following line is considered in capacitor lumped type?

Q4. A generating station has a maximum demand of 25 MW, a load factor of 60%, then the average demand MW will be

Q5. A cable has inductance of \(0.22 \: mH/km\) and capacitance of \(0.202 \: \mu F/km\). The surge impedance of the cable is

Q6. In a.c. generator, the reverse power protection is applied for

Q7. Surge impedance loading can be increased by

Q8. The neutral of the power system may be connected to earth

Q9. The steady state stability limit is

Q10. In a circuit breaker, the active recovery voltage depends on

Record & Track Your Performance

January
Week # 3 Quiz 1