Basic Power system quiz

The line constant of a transmission line are

corona is likely occur maximum in case of

The highest transmission voltage in India through UHVAC is

In overhead lines, we generally use

Skin effect in a transmission line is due to

The ratio of line to line capacitance and line to neutral capacitance is

The highest transmission voltage in India through UHVDC is

Buchholz relay is used for the protection of

Sparking occurs when a load is switched off because the circuit has high

Sparking occurs when a load is switched off because the circuit has high

Location of lightning arrester is near a

Current rating is not necessary in case of

Which of the following circuit breaker has high reliability and negligible maintenance?

Sparking between contacts can be reduced by inserting

Which portion of the power system is least prone to faults?

Bundled conductors are used for EHV Transmission lines primarily for reducing the

Match list 1(phenomenon) with list 2(dominant feature) and select correct answer.
List 1
i. Voltage stability
ii. Transient stability
iii. Oscillatory instability
iv. Steady-state dynamic
List 2
1) Power system stabilizer
2) Damping power
3) Angle stability
4) Reactive Power

Choose the correct sequence of list 2 below

Equivalent π model is quite suitable for analyzing the performance of transmission line of

Consider the following statements

1.Equivalent T circuit of a long line is preferred to equivalent π circuit.
2.The nature of reactive power compensation is different for peak load and off peak load condition
3.Ferranti effect is significant only on medium and long lines.

Which of the statements given above are correct

When bundle conductors are used in place of single conductor, The effective inductance and capacitance will respectively

For a loss free transmission line surge impedence should be

Corona can be reduced by

To provide reliable protection for a distribution transformer against over voltage using lighting arrestor, it is essential that the
1) Load resistance is high
2) Distance between the transformer an the arrestor is small
3) Transformer and the arrestor have a common interconnecting ground
4) Spark over voltage of the arrestor is greater than the residual voltage
Choose the combination which is correct

9. An alternator is to be synchronized with an existing operating alternator. The following is the condition which need not be satisfied

The ratio of line to line capacitance and line to neutral capacitance is