Govt Exams Mock Test FREE | Online Quiz Competition

Q1. Which relay operates during the removal of one phase of the large induction motor?

short circuit

earth fault

negative phase sequence

none of the above

Q2. The reactive power transfers over a line mainly depends on

power angle \(\delta\)

\(\rvert V_S\rvert - \rvert V_R\rvert\)

\(V_S\)

\(V_R\)

Q3. Resistance switching is normally restored in case of__________.

Minimum oil circuit breakers

Bulk oil circuit breakers

Air blast circuit breakers

\(SF_6\) circuit breakers

Q4. What is the unit of synchronizing coefficient 'T' ?

MW-s

MW/s

MW.rad

MW/rad

Q5. If the inductance and capacitance of a system are 1.0 H and 0.01 µF and the instantaneous value of the interrupted current is 10 amps, the voltage across the breaker contacts will be

100 kV

157 kV

50 kV

123 kV

Q6. The charging current in the transmission line

Lags the voltage by 90˚

Leads the voltage by 45˚

Leads the voltage by 90˚

Leads the voltage by 180˚

Q7. The following sequence currents were recorded. \(I_{positive} = j1.653 \: p.u., I_{negative} = –j0.5 \: p.u. \: and \: I_{zero} = –j1.153 \: p.u.\). The fault is

Line to ground

Line to line to ground

Three phase

Line to line

Q8. Three unequal impedances are fed by a balanced 3-phase system through 3-phase 3 wire system. The impedances are connected in star. The sum of three line currents is

3 times line current

equal to line current

zero

none of the above

Q9. Rubber gloves are safe upto

1000 V

2000 V

3000 V

4000 V

Q10. The relay used for feeder protection is

Under voltage relay

Translay relay

Thermal relay

Buchholz relay

Quiz

Year 2024

April
Week # 3 Quiz 1

Q1. Which relay operates during the removal of one phase of the large induction motor?

Q2. The reactive power transfers over a line mainly depends on

Q3. Resistance switching is normally restored in case of__________.

Q4. What is the unit of synchronizing coefficient 'T' ?

Q5. If the inductance and capacitance of a system are 1.0 H and 0.01 µF and the instantaneous value of the interrupted current is 10 amps, the voltage across the breaker contacts will be

Q6. The charging current in the transmission line

Q7. The following sequence currents were recorded. \(I_{positive} = j1.653 \: p.u., I_{negative} = –j0.5 \: p.u. \: and \: I_{zero} = –j1.153 \: p.u.\). The fault is

Q8. Three unequal impedances are fed by a balanced 3-phase system through 3-phase 3 wire system. The impedances are connected in star. The sum of three line currents is

Q9. Rubber gloves are safe upto

Q10. The relay used for feeder protection is

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

April Week # 3 Quiz 1

Q1. Which relay operates during the removal of one phase of the large induction motor?

Q2. The reactive power transfers over a line mainly depends on

Q3. Resistance switching is normally restored in case of__________.

Q4. What is the unit of synchronizing coefficient 'T' ?

Q5. If the inductance and capacitance of a system are 1.0 H and 0.01 µF and the instantaneous value of the interrupted current is 10 amps, the voltage across the breaker contacts will be

Q6. The charging current in the transmission line

Q7. The following sequence currents were recorded. \(I_{positive} = j1.653 \: p.u., I_{negative} = –j0.5 \: p.u. \: and \: I_{zero} = –j1.153 \: p.u.\). The fault is

Q8. Three unequal impedances are fed by a balanced 3-phase system through 3-phase 3 wire system. The impedances are connected in star. The sum of three line currents is

Q9. Rubber gloves are safe upto

Q10. The relay used for feeder protection is

Record & Track Your Performance

April
Week # 3 Quiz 1