MCQOPTIONS
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MCQOPTIONS
This section includes 39 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The total resistance between A and B are? |
| A. | 20 ohm |
| B. | 5 ohm |
| C. | 80 ohm |
| D. | 0 ohm |
| Answer» C. 80 ohm | |
| 2. |
The currents in the three branches of a parallel circuit are 3A, 4A and 5A. What is the current leaving it? |
| A. | 0A |
| B. | Insufficient data provided |
| C. | The largest one among the three values |
| D. | 12A |
| Answer» E. | |
| 3. |
If the current through x ohm resistance in the circuit is 5A, find the value of x. |
| A. | 27 ohm |
| B. | 5 ohm |
| C. | 12 ohm |
| D. | 135 ohm |
| Answer» B. 5 ohm | |
| 4. |
The voltage across the short is? |
| A. | 135V |
| B. | Infinity |
| C. | Zero |
| D. | 11.25V |
| Answer» D. 11.25V | |
| 5. |
The voltage across the open circuit is? |
| A. | 100V |
| B. | Infinity |
| C. | 90V |
| D. | 0V |
| Answer» B. Infinity | |
| 6. |
The current in each branch of a parallel circuit is proportional to _________ |
| A. | The amount of time the circuit is on for |
| B. | Proportional to the value of the resistors |
| C. | Equal in all branches |
| D. | Proportional to the power in the circuit |
| Answer» C. Equal in all branches | |
| 7. |
As the impedance increases, the admittance ____________ |
| A. | Increases |
| B. | Decreases |
| C. | Remains the same |
| D. | Becomes zero |
| Answer» C. Remains the same | |
| 8. |
In A parallel circuit, with any number of impedances, The voltage across each impedance is? |
| A. | equal |
| B. | divided equally |
| C. | divided proportionaly |
| D. | zero |
| Answer» B. divided equally | |
| 9. |
In an impedance parallel network, the reactive component will either lead or lag the ________ by 90 degrees. |
| A. | Voltage |
| B. | Current |
| C. | Either voltage or current |
| D. | Cannot be determined |
| Answer» B. Current | |
| 10. |
The reactive component in an impedance parallel circuit leads the voltage when the current _________ the voltage. |
| A. | Leads |
| B. | Lags |
| C. | Either leads or lags |
| D. | Cannot be determined |
| Answer» B. Lags | |
| 11. |
In an impedance parallel network, the reactive component will either lead or lag the voltage by _________ degrees. |
| A. | 0 |
| B. | 90 |
| C. | 45 |
| D. | 180 |
| Answer» C. 45 | |
| 12. |
Which, among the following is the correct expression for impedance? |
| A. | Z=Y |
| B. | Z=1/Y |
| C. | Z=Y² |
| D. | Z=1/Y² |
| Answer» C. Z=Y² | |
| 13. |
The active component in an impedance parallel circuit will __________ the voltage. |
| A. | Leads |
| B. | Lags |
| C. | Be in phase with |
| D. | Either leads or lags |
| Answer» D. Either leads or lags | |
| 14. |
Which, among the following is the correct expression for admittance? |
| A. | Y=Z |
| B. | Y=1/Z |
| C. | Y=Z² |
| D. | Y=1/Z² |
| Answer» C. Y=Z² | |
| 15. |
The admittance of a system is 10 ohm¯¹, calculate its impedance. |
| A. | 10 ohm |
| B. | 0.1 ohm |
| C. | 1 ohm |
| D. | 1.1 ohm |
| Answer» C. 1 ohm | |
| 16. |
In a parallel circuit, current in each impedance is_____________ |
| A. | equal |
| B. | different |
| C. | zero |
| D. | infinite |
| Answer» C. zero | |
| 17. |
In an impedance parallel network, the reactive component will ____________ the voltage by 90 degrees. |
| A. | Lead |
| B. | Lag |
| C. | Either lead or lag |
| D. | Depends on the circuit |
| Answer» D. Depends on the circuit | |
| 18. |
The quadrature component is also known as? |
| A. | Active component |
| B. | Reactive component |
| C. | Either active or reactive component |
| D. | Neither active nor reactive component |
| Answer» C. Either active or reactive component | |
| 19. |
if the impedance of a system is 4 ohm, calculate its admittance. |
| A. | 0.25 ohm¯¹ |
| B. | 4 ohm¯¹ |
| C. | 25 ohm¯¹ |
| D. | 0.4 ohm¯¹ |
| Answer» B. 4 ohm¯¹ | |
| 20. |
What is the unit of admittance? |
| A. | ohm |
| B. | henry |
| C. | farad |
| D. | ohm¯¹ |
| Answer» E. | |
| 21. |
The phase difference between the active component of an impedance parallel circuit and the voltage in the network is __________ |
| A. | 0 |
| B. | 90 |
| C. | 180 |
| D. | 360 |
| Answer» B. 90 | |
| 22. |
In a parallel circuit, we consider _____________ instead of impedance. |
| A. | Resistance |
| B. | Capacitance |
| C. | Inductance |
| D. | Admittance |
| Answer» E. | |
| 23. |
In a parallel circuit, we consider admittance instead of _________ |
| A. | Resistance |
| B. | Capacitance |
| C. | Inductance |
| D. | Impedance |
| Answer» E. | |
| 24. |
Find the total current if Iₗ=2A and Iᵣ=8A. |
| A. | 3A |
| B. | -3A |
| C. | 7A |
| D. | 10A |
| Answer» E. | |
| 25. |
Find the value of Iᵣ if I=10A and Iₗ=8A. |
| A. | 5A |
| B. | 18A |
| C. | 12A |
| D. | 2A |
| Answer» E. | |
| 26. |
What is the expression for the current in the capacitor from the following circuit? |
| A. | V/C |
| B. | V/I |
| C. | 0 |
| D. | V/X𝒸 |
| Answer» E. | |
| 27. |
What is the phase relation between I |
| A. | I𝒸 lags V |
| B. | I𝒸 leads V |
| C. | I𝒸 and V are in phase |
| D. | No relation |
| Answer» C. I𝒸 and V are in phase | |
| 28. |
Find the total current if I |
| A. | 3A |
| B. | -3A |
| C. | 7A |
| D. | 10A |
| Answer» D. 10A | |
| 29. |
Find the value of Iᵣ if I=10A and I |
| A. | 5A |
| B. | 18A |
| C. | 12A |
| D. | 2A |
| Answer» E. | |
| 30. |
Find the value of Iₗ if I |
| A. | 4A |
| B. | 18A |
| C. | 12A |
| D. | 2A |
| Answer» B. 18A | |
| 31. |
What is the phase relation between Iₗ and V from the following circuit? |
| A. | Iₗ lags V |
| B. | Iₗ leads V |
| C. | Iₗ and V are in phase |
| D. | No relation |
| Answer» B. Iₗ leads V | |
| 32. |
What is the relation between Iᵣ and V in the following circuit? |
| A. | Iᵣ leads V |
| B. | Iᵣ lags V |
| C. | Iᵣ and V are in phase |
| D. | No relation |
| Answer» D. No relation | |
| 33. |
What is the expression for the current in the inductor from the following circuit? |
| A. | V/I |
| B. | V/Xₗ |
| C. | 0 |
| D. | Cannot be determined |
| Answer» C. 0 | |
| 34. |
Find the expression for the current I from the given circuit. |
| A. | I=I𝒸 |
| B. | I=Iᵣ |
| C. | I=I𝒸+Iᵣ |
| D. | I=0 |
| Answer» D. I=0 | |
| 35. |
From the given circuit, find the value of Iᵣ. |
| A. | 0 |
| B. | V/I |
| C. | V/R |
| D. | Cannot be determined |
| Answer» D. Cannot be determined | |
| 36. |
THE_CURRENTS_IN_THE_THREE_BRANCHES_OF_A_PARALLEL_CIRCUIT_ARE_3A,_4A_AND_5A._WHAT_IS_THE_CURRENT_LEAVING_IT??$ |
| A. | 0A |
| B. | Insufficient data provided |
| C. | The largest one among the three values |
| D. | 12A |
| Answer» E. | |
| 37. |
The current in each branch of a parallel circuit is proportional to_______ |
| A. | The amount of time the circuit is on for |
| B. | Proportional to the value of the resistors |
| C. | Equal in all branches |
| D. | Proportional to the power in the circuit |
| Answer» C. Equal in all branches | |
| 38. |
In a parallel circuit, with a number of resistors, the voltage across each resistor is ________ |
| A. | The same for all resistors |
| B. | Is divided equally among all resistors |
| C. | Is divided proportionally across all resistors |
| D. | Is zero for all resistors |
| Answer» B. Is divided equally among all resistors | |
| 39. |
If two bulbs are connected in parallel and one bulb blows out, what happens to the other bulb? |
| A. | The other bulb blows out as well |
| B. | The other bulb continues to glow with the same brightness |
| C. | The other bulb glows with increased brightness |
| D. | The other bulb stops glowing |
| Answer» C. The other bulb glows with increased brightness | |