Govt Exams Mock Test FREE | Online Quiz Competition

Q1. A lightning stroke current of 10 kA strikes a line of 400 \(\Omega\) surge impedance. What is the over voltage caused when a direct stroke occurs over the top of an unshielded transmission line?

6000 kV

4000 kV

8000 kV

2000 kV

Q2. Choose the correct equation for transmission of voltage \(T_v\). (\(Z_l =\) Surge impedance of load, \(Z_s =\) Surge impedance of line)

\(\frac{2 Z_s}{(Z_s + Z_l)}\)

\(\frac{2 Z_l}{(Z_s + Z_l)}\)

\(\frac{(Z_s - Z_l)}{(Z_s + Z_l)}\)

\(\frac{(Z_l - Z_s)}{(Z_s + Z_l)}\)

Q3. The units of inertia constant are:

Joule

Hertz

Joule/sec

Sec

Q4. Which one of the following statement with respect to Aerial Bunched Cables (ABC) system is TRUE?

ABC system is not suitable for rural electrification which are situated in difficult terrain, hills, forests and coastal areas.

The overall cost of the ABC system is very high as compared to the bare conductor system.

ABC system totally eliminates the fault on lines and thereby improving the quality of supply.

ABC system requires more clearance, insulators and high maintenance.

Q5. Which type of HVDC link can provide more than half the rated power transfer capacity under the fault in any one conductor condition?

Bipolar

Homopolar

Monopolar

All of the above

Q6. Statement 1: The string efficiency of a DC system is 100%.
Statement 2: Suspension insulators are made up of porcelain.

Statement 1 is TRUE and Statement 2 is FALSE

Statement 1 is FALSE and Statement 2 is TRUE

Both Statement 1 and Statement 2 are FALSE

Both Statement 1 and Statement 2 are TRUE

Q7. Wind energy conversion devices based on drag force

Move faster than wind

Move slower than wind

Move with equal velocity as wind

Do not depend on the velocity of wind

Q8. The impedance value of a generator is 0.2 pu on a base value of 11 kV, 50 MVA. The impedance value for a base value of 22 kV, 150 MVA is

0.15 pu

0.2 pu

0.3 pu

0.4 pu

Q9. The ratio of drop off value to pick- up value of a relay is known as

CT ratio

PT Ratio

Drop out / Reset ratio

Tripping ratio

Q10. The capacitance per kilometer of 3-phase belted cable is 0.09 F between the two cores with the third core connected to the lead sheath. Determine the core to neutral capacitance for the 5 km long cable.

0.09 F

0.9 F

100 F

9 F

Quiz

Year 2024

February
Week # 2 Quiz 5

Q1. A lightning stroke current of 10 kA strikes a line of 400 \(\Omega\) surge impedance. What is the over voltage caused when a direct stroke occurs over the top of an unshielded transmission line?

Q2. Choose the correct equation for transmission of voltage \(T_v\). (\(Z_l =\) Surge impedance of load, \(Z_s =\) Surge impedance of line)

Q3. The units of inertia constant are:

Q4. Which one of the following statement with respect to Aerial Bunched Cables (ABC) system is TRUE?

Q5. Which type of HVDC link can provide more than half the rated power transfer capacity under the fault in any one conductor condition?

Q6. Statement 1: The string efficiency of a DC system is 100%.
Statement 2: Suspension insulators are made up of porcelain.

Q7. Wind energy conversion devices based on drag force

Q8. The impedance value of a generator is 0.2 pu on a base value of 11 kV, 50 MVA. The impedance value for a base value of 22 kV, 150 MVA is

Q9. The ratio of drop off value to pick- up value of a relay is known as

Q10. The capacitance per kilometer of 3-phase belted cable is 0.09 F between the two cores with the third core connected to the lead sheath. Determine the core to neutral capacitance for the 5 km long cable.

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

February Week # 2 Quiz 5

Q1. A lightning stroke current of 10 kA strikes a line of 400 \(\Omega\) surge impedance. What is the over voltage caused when a direct stroke occurs over the top of an unshielded transmission line?

Q2. Choose the correct equation for transmission of voltage \(T_v\). (\(Z_l =\) Surge impedance of load, \(Z_s =\) Surge impedance of line)

Q3. The units of inertia constant are:

Q4. Which one of the following statement with respect to Aerial Bunched Cables (ABC) system is TRUE?

Q5. Which type of HVDC link can provide more than half the rated power transfer capacity under the fault in any one conductor condition?

Q6. Statement 1: The string efficiency of a DC system is 100%. Statement 2: Suspension insulators are made up of porcelain.

Q7. Wind energy conversion devices based on drag force

Q8. The impedance value of a generator is 0.2 pu on a base value of 11 kV, 50 MVA. The impedance value for a base value of 22 kV, 150 MVA is

Q9. The ratio of drop off value to pick- up value of a relay is known as

Q10. The capacitance per kilometer of 3-phase belted cable is 0.09 F between the two cores with the third core connected to the lead sheath. Determine the core to neutral capacitance for the 5 km long cable.

Record & Track Your Performance

February
Week # 2 Quiz 5

Q6. Statement 1: The string efficiency of a DC system is 100%.
Statement 2: Suspension insulators are made up of porcelain.