Govt Exams Mock Test FREE | Online Quiz Competition

Q1. The \(Y_{bus}\) matrix of a \(100\) bus interconnected system is \(90\%\) sparse. Then find the number of non zero elements in the \(Y_{bus}\) matrix.

90

900

1000

9

Q2. In Fast Decoupled Load Flow method, the matrices [H] and [L] are

singular

zero

square

unity

Q3. A generating station having 'n' section busbars each rated at Q kVA with \(x \%\) reactance is connected on the tie-bars system through busbar reactances of b%. Determine the short-circuit kVA if a 3-phase fault takes place on one section.

\(Q[\frac{1}{x}+\frac{n+1}{bn-x}]\)

\(Q[\frac{1}{x}-\frac{n+1}{bn-x}]\)

\(Q[\frac{1}{x}+\frac{n+1}{bn+x}]\)

\(Q[\frac{1}{x}+\frac{n-1}{bn+x}]\)

Q4. If the voltage applied to the core and sheath of a cable is halved, the reactive power generated by the cable will be ............ times of the original value.

\(\frac{1}{4}\)

4

\(\frac{1}{2}\)

2

Q5. What is the recommended width of right of way (ROW) for the transmission line of 1200 kV?

52 meters

89 meters

35 meters

18 meters

Q6. An over current relay, having a plug setting of 75 % is connected to the supply circuit through a current transformer of ratio 200/5. The pick-up value of the current is

5 A

2.5 A

6.25 A

3.75A

Q7. If the fault current is 2000 A, the relay setting is 50% and CT ratio is 400:5, the plug setting multiplier is

25

15

50

10

Q8. The voltage of a bus can be controlled by controlling the

phase angle

reactive power of the bus

active power of the bus

phase angle and the reactive power

Q9. In two-part tariff, the............ charges depend upon the maximum demand of the consumer and the ......... charges depend upon the number of units consumed by the consumer.

fixed, running

fixed, semi-fixed

semi-fixed, running

running, fixed

Q10. The sequence components of the fault current are as follows: \(i_+ = j1.5 \: p.u., i_- = – j0.5 \: p.u., i_0 = –j1 \: p.u.\). The type of fault in the system is:

LG

LL

LLG

LLLG

Quiz

Year 2024

September
Week # 2 Quiz 5

Q1. The \(Y_{bus}\) matrix of a \(100\) bus interconnected system is \(90\%\) sparse. Then find the number of non zero elements in the \(Y_{bus}\) matrix.

Q2. In Fast Decoupled Load Flow method, the matrices [H] and [L] are

Q3. A generating station having 'n' section busbars each rated at Q kVA with \(x \%\) reactance is connected on the tie-bars system through busbar reactances of b%. Determine the short-circuit kVA if a 3-phase fault takes place on one section.

Q4. If the voltage applied to the core and sheath of a cable is halved, the reactive power generated by the cable will be ............ times of the original value.

Q5. What is the recommended width of right of way (ROW) for the transmission line of 1200 kV?

Q6. An over current relay, having a plug setting of 75 % is connected to the supply circuit through a current transformer of ratio 200/5. The pick-up value of the current is

Q7. If the fault current is 2000 A, the relay setting is 50% and CT ratio is 400:5, the plug setting multiplier is

Q8. The voltage of a bus can be controlled by controlling the

Q9. In two-part tariff, the............ charges depend upon the maximum demand of the consumer and the ......... charges depend upon the number of units consumed by the consumer.

Q10. The sequence components of the fault current are as follows: \(i_+ = j1.5 \: p.u., i_- = – j0.5 \: p.u., i_0 = –j1 \: p.u.\). The type of fault in the system is:

Quiz

Year 2024

November Week # 4 Expire on 21 Dec 2024

December Week # 1 Expire on 31 Dec 2024

December Week # 2 Expire on 07 Jan 2025

December Week # 3 Expire on 14 Jan 2025

September Week # 2 Quiz 5

Q1. The \(Y_{bus}\) matrix of a \(100\) bus interconnected system is \(90\%\) sparse. Then find the number of non zero elements in the \(Y_{bus}\) matrix.

Q2. In Fast Decoupled Load Flow method, the matrices [H] and [L] are

Q3. A generating station having 'n' section busbars each rated at Q kVA with \(x \%\) reactance is connected on the tie-bars system through busbar reactances of b%. Determine the short-circuit kVA if a 3-phase fault takes place on one section.

Q4. If the voltage applied to the core and sheath of a cable is halved, the reactive power generated by the cable will be ............ times of the original value.

Q5. What is the recommended width of right of way (ROW) for the transmission line of 1200 kV?

Q6. An over current relay, having a plug setting of 75 % is connected to the supply circuit through a current transformer of ratio 200/5. The pick-up value of the current is

Q7. If the fault current is 2000 A, the relay setting is 50% and CT ratio is 400:5, the plug setting multiplier is

Q8. The voltage of a bus can be controlled by controlling the

Q9. In two-part tariff, the............ charges depend upon the maximum demand of the consumer and the ......... charges depend upon the number of units consumed by the consumer.

Q10. The sequence components of the fault current are as follows: \(i_+ = j1.5 \: p.u., i_- = – j0.5 \: p.u., i_0 = –j1 \: p.u.\). The type of fault in the system is:

Record & Track Your Performance

September
Week # 2 Quiz 5