Govt Exams Mock Test FREE | Online Quiz Competition

Q1. A string insulator has \(5\) units. The string efficiency is \(75\%\). Find the voltage across the bottom most unit with reference to string voltage.

\(0.27 \times V_{ph}\)

\(0.37 \times V_{ph}\)

\(1 \times V_{ph}\)

\(0.4 \times V_{ph}\)

Q2. P' is the power to be transmitted over an overhead line of length ‘L’ km. For the same power loss and the same voltage between the conductor and the earth, the least conductor material required is in

2 wire d.c. system.

Single phase a.c. system.

3 phase 3 wire a.c. system.

3 phase 4 wire a.c. system.

Q3. A loss less transmission line is operating under no load condition. It has ABCD parameters \(B = 100 \angle 90^\circ\) has a phase shift of \(0.3 \:rad\), what value of shunt reactor is required for compensation of Ferranti effect?

\(2000 \Omega \)

\(2222 \Omega \)

\(3000 \Omega \)

\(2500 \Omega \)

Q4. Horizontal axis windmills of modern design can

always turn towards the direction of the wind

never adjust the energy output

Never turn towards the direction of the wind

none of the above

Q5. A composite conductor consists of three conductors of radius R each. The conductors are arranged as shown below. The geometric mean radius (GMR) (in cm) of the composite conductor is kR. The value of k is ___________.

0.75

1.9

3

2.5

Q6. Resistance switching is used in air blast circuit breakers to

Reduce the magnitude of fault current

Control the circuit breaker operating time

Damp out the fast transient

Change the fault current power factor

Q7. In which of the following configuration power transfer ability is higher?

Triangular configuration

Horizontal configuration

Same in both configuration

None of the above

Q8. Equal area criterion gives the information regarding

stability region.

absolute stability.

relative stability.

swing curves.

Q9. An impedance relay is a

Voltage restrained over current relay

Voltage restrained directional relay

directional restrained over current relay

directional restrained over voltage relay

Q10. The induced voltages on the transmission lines due to electrostatic and electromagnetic induction is reduced by

Ferranti effect

Corona effect

Bundling of conductors

Transposition of conductors.

Quiz

Year 2024

June
Week # 2 Quiz 5

Q1. A string insulator has \(5\) units. The string efficiency is \(75\%\). Find the voltage across the bottom most unit with reference to string voltage.

Q2. P' is the power to be transmitted over an overhead line of length ‘L’ km. For the same power loss and the same voltage between the conductor and the earth, the least conductor material required is in

Q3. A loss less transmission line is operating under no load condition. It has ABCD parameters \(B = 100 \angle 90^\circ\) has a phase shift of \(0.3 \:rad\), what value of shunt reactor is required for compensation of Ferranti effect?

Q4. Horizontal axis windmills of modern design can

Q5. A composite conductor consists of three conductors of radius R each. The conductors are arranged as shown below. The geometric mean radius (GMR) (in cm) of the composite conductor is kR. The value of k is ___________.

Q6. Resistance switching is used in air blast circuit breakers to

Q7. In which of the following configuration power transfer ability is higher?

Q8. Equal area criterion gives the information regarding

Q9. An impedance relay is a

Q10. The induced voltages on the transmission lines due to electrostatic and electromagnetic induction is reduced by

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

June Week # 2 Quiz 5

Q1. A string insulator has \(5\) units. The string efficiency is \(75\%\). Find the voltage across the bottom most unit with reference to string voltage.

Q2. P' is the power to be transmitted over an overhead line of length ‘L’ km. For the same power loss and the same voltage between the conductor and the earth, the least conductor material required is in

Q3. A loss less transmission line is operating under no load condition. It has ABCD parameters \(B = 100 \angle 90^\circ\) has a phase shift of \(0.3 \:rad\), what value of shunt reactor is required for compensation of Ferranti effect?

Q4. Horizontal axis windmills of modern design can

Q5. A composite conductor consists of three conductors of radius R each. The conductors are arranged as shown below. The geometric mean radius (GMR) (in cm) of the composite conductor is kR. The value of k is ___________.

Q6. Resistance switching is used in air blast circuit breakers to

Q7. In which of the following configuration power transfer ability is higher?

Q8. Equal area criterion gives the information regarding

Q9. An impedance relay is a

Q10. The induced voltages on the transmission lines due to electrostatic and electromagnetic induction is reduced by

Record & Track Your Performance

June
Week # 2 Quiz 5