MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Power Systems knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
While modelling a short transmission line of the overhead lines, line resistance and inductances are only considered because the line capacitance is ___________ |
| A. | zero |
| B. | finite but small |
| C. | finite but large |
| D. | infinite |
| Answer» C. finite but large | |
| 2. |
We transpose high voltages especially while transmitting so that the __________ |
| A. | phase voltage imbalances can be minimised |
| B. | corona losses are reduced |
| C. | voltage drop is minimised |
| D. | all of the mentioned |
| Answer» B. corona losses are reduced | |
| 3. |
_______ is neglected while carrying out short transmission line analysis. |
| A. | Shunt admittance |
| B. | Power losses |
| C. | Series impedance |
| D. | None of the mentioned |
| Answer» B. Power losses | |
| 4. |
Following effects of the transmission lines(i) Skin effect(ii) Corona(iii) ProximityThe effective resistance of the conductor is increased by __________ |
| A. | (i), (ii) |
| B. | (i), (iii) |
| C. | (ii), (iii) |
| D. | (i), (ii), (iii) |
| Answer» E. | |
| 5. |
WHILE_MODELLING_A_SHORT_TRANSMISSION_LINE_OF_THE_OVERHEAD_LINES,_LINE_RESISTANCE_AND_INDUCTANCES_ARE_ONLY_CONSIDERED_BECAUSE_THE_LINE_CAPACITANCE_IS____________?$ |
| A. | zero |
| B. | finite but small |
| C. | finite but large |
| D. | infinite |
| Answer» C. finite but large | |
| 6. |
We transpose high voltages especially while transmitting so that the _________? |
| A. | phase voltage imbalances can be minimised |
| B. | corona losses are reduced |
| C. | voltage drop is minimised |
| D. | all of the mentioned |
| Answer» B. corona losses are reduced | |
| 7. |
_______ is neglected while carrying out short transmission line analysis? |
| A. | Shunt admittance |
| B. | Power losses |
| C. | Series impedance |
| D. | None of the mentioned |
| Answer» B. Power losses | |
| 8. |
In a transmission system, the transmission parameters of distribution is/are ___________ |
| A. | resistance |
| B. | inductance |
| C. | capacitance and shunt conductance |
| D. | resistance, inductance, capacitance and shunt conductance |
| Answer» E. | |
| 9. |
Critical voltage limit of the transmission line can be increased by ____________ |
| A. | increasing conductor’s radius |
| B. | increasing conductor spacing |
| C. | reducing conductor spacing |
| D. | reducing radius of conductor |
| Answer» B. increasing conductor spacing | |
| 10. |
When the ozone gas is produced as a by product of corona, that causes _______ |
| A. | corrosion of wires |
| B. | reduction of power factor |
| C. | increase of power factor |
| D. | improvement of regulation |
| Answer» B. reduction of power factor | |
| 11. |
The very peculiar advantage of corona in the circuit can be ___________ |
| A. | reduction in steepness of surge fronts |
| B. | improvement of power factor |
| C. | reduction in radio interference |
| D. | reduction in steepness, radio interference and improvement of PF |
| Answer» B. improvement of power factor | |
| 12. |
The corona has only disadvantages to the transmission system. |
| A. | True |
| B. | False |
| Answer» C. | |
| 13. |
The presence of ozone while the corona has occurred, can be found using ________ |
| A. | pressure |
| B. | hissing noises |
| C. | faint luminous glow of bluish colour |
| D. | all of the mentioned |
| Answer» E. | |