Govt Exams Mock Test FREE | Online Quiz Competition

Q1. A circuit breaker is rated 2500 A, 2000 MVA, 33 kV, 3 sec, 3-phase oil circuit breaker. Determine the breaking current.

350 kA

35 kA

2500 kA

25 kA

Q2. A distribution transformer is rated at 100 kVA. The maximum active power that it can supply is

200 kW

75 kW

150 kW

100 kW

Q3. If voltage is increased by n times, the size of the conductor would

increase by \(n\) times

reduce by \(\frac{1}{n}\) times

increase by \(n^2\) times

reduce by \(\frac{1}{n^2}\) times

Q4. Which of the following is not a valid advantage of bundle conductor?

Reduced reactance

Reduced voltage gradient

Reduced corona loss

Increased reactance

Q5. A transmission line has a reactance of \(0.5 \: p.u.\) is operating at \(V_s =1 p.u. \: and \: V_r = 0.5 p.u.\) The generator is connected at source end which is delivering \(0.5 p.u.\) of active power. Find the load angle?

\(30^\circ\)

\(45^\circ\)

\(60^\circ\)

\(90^\circ\)

Q6. In the circuit breaker, the arcing contacts are made of

Stainless steel

Hard pressed carbon

porcelain

copper tungsten alloy

Q7. The base impedance of a three phase, 10 kV, 5 MVA system is

\(5\:\Omega\)

\(15\:\Omega\)

\(20\:\Omega\)

\(10\:\Omega\)

Q8. If the tip of a wind rotor blade is traveling at 45 m/s and the wind speed is 9 m/s, obtain the tip-speed ratio.

1

5

0.5

2.5

Q9. The angle between the phase wires and ground wire used for lighting protection on the tower is generally

15°

30°

60°

45°

Q10. Which of the following equipment is installed in thermal power stations to reduce air pollution ?

Air tilter

Economiser

Electrostatic Precipitator

Air pre heater

Quiz

Year 2024

September
Week # 3 Quiz 1

Q1. A circuit breaker is rated 2500 A, 2000 MVA, 33 kV, 3 sec, 3-phase oil circuit breaker. Determine the breaking current.

Q2. A distribution transformer is rated at 100 kVA. The maximum active power that it can supply is

Q3. If voltage is increased by n times, the size of the conductor would

Q4. Which of the following is not a valid advantage of bundle conductor?

Q5. A transmission line has a reactance of \(0.5 \: p.u.\) is operating at \(V_s =1 p.u. \: and \: V_r = 0.5 p.u.\) The generator is connected at source end which is delivering \(0.5 p.u.\) of active power. Find the load angle?

Q6. In the circuit breaker, the arcing contacts are made of

Q7. The base impedance of a three phase, 10 kV, 5 MVA system is

Q8. If the tip of a wind rotor blade is traveling at 45 m/s and the wind speed is 9 m/s, obtain the tip-speed ratio.

Q9. The angle between the phase wires and ground wire used for lighting protection on the tower is generally

Q10. Which of the following equipment is installed in thermal power stations to reduce air pollution ?

Quiz

Year 2024

September Week # 2 Expire on 07 Oct 2024

September Week # 3 Expire on 14 Oct 2024

September Week # 4 Expire on 21 Oct 2024

October Week # 1 Expire on 31 Oct 2024

September Week # 3 Quiz 1

Q1. A circuit breaker is rated 2500 A, 2000 MVA, 33 kV, 3 sec, 3-phase oil circuit breaker. Determine the breaking current.

Q2. A distribution transformer is rated at 100 kVA. The maximum active power that it can supply is

Q3. If voltage is increased by n times, the size of the conductor would

Q4. Which of the following is not a valid advantage of bundle conductor?

Q5. A transmission line has a reactance of \(0.5 \: p.u.\) is operating at \(V_s =1 p.u. \: and \: V_r = 0.5 p.u.\) The generator is connected at source end which is delivering \(0.5 p.u.\) of active power. Find the load angle?

Q6. In the circuit breaker, the arcing contacts are made of

Q7. The base impedance of a three phase, 10 kV, 5 MVA system is

Q8. If the tip of a wind rotor blade is traveling at 45 m/s and the wind speed is 9 m/s, obtain the tip-speed ratio.

Q9. The angle between the phase wires and ground wire used for lighting protection on the tower is generally

Q10. Which of the following equipment is installed in thermal power stations to reduce air pollution ?

Record & Track Your Performance

September
Week # 3 Quiz 1