MCQOPTIONS
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MCQOPTIONS
This section includes 84 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. |
Find the Thevenin equivalent ( and ) between terminals A and B of the circuit given below. |
| A. | 4.16 V, 120 |
| B. | 41.6 V, 120 |
| C. | 4.16 V, 70 |
| D. | 41.67 V, 70 |
| Answer» E. | |
| 2. |
Referring to the given circuit, the voltage and current for the load resistor, , is |
| A. | 450 mV, 4.5 mA |
| B. | 4.50 V, 45 mA |
| C. | 4.50 V, 4.5 mA |
| D. | 450 mV, 45 mA |
| Answer» D. 450 mV, 45 mA | |
| 3. |
Find the current in of the given circuit, using the superposition theorem. |
| A. | 16.7 mA |
| B. | 33.3 mA |
| C. | 50 mA |
| D. | 16.6 mA |
| Answer» D. 16.6 mA | |
| 4. |
A 470 is connected across a voltage source, , of 120 V. The source's internal resistance, , is 12 . What is the output voltage across the load? |
| A. | 120 V |
| B. | 0 V |
| C. | 117 V |
| D. | 12 V |
| Answer» D. 12 V | |
| 5. |
Referring to circuit given, if is changed to a 68 resistor, what will be the current through it? |
| A. | 0.16 A |
| B. | 0.24 A |
| C. | 0.2 A |
| D. | 0.04 A |
| Answer» B. 0.24 A | |
| 6. |
Find the Thevenin equivalent ( and ) between terminals A and B of the circuit given. |
| A. | 562 mV, 167 |
| B. | 5.62 V, 167 |
| C. | 5.62 V, 188 |
| D. | 562 mV, 188 |
| Answer» C. 5.62 V, 188 | |
| 7. |
Referring to the given circuit, determine and if a 68 resistor is connected in parallel across and . |
| A. | 3.3 V, 148 |
| B. | 330 mV, 148 |
| C. | 3.3 V, 68 |
| D. | 330 mV, 68 |
| Answer» B. 330 mV, 148 | |
| 8. |
A 12 mA current source has an internal resistance, , of 1.2 k. The equivalent voltage source is |
| A. | 144 V |
| B. | 14.4 V |
| C. | 7.2 V |
| D. | 72 mV |
| Answer» C. 7.2 V | |
| 9. |
A certain voltage source has the values = 30 V and = 6 . The values for an equivalent current source are |
| A. | 5 A, 6 |
| B. | 30 A, 6 |
| C. | 5 A, 30 |
| D. | 30 A, 5 |
| Answer» B. 30 A, 6 | |
| 10. |
A 120 load is connected across an ideal voltage source with = 12 V. The voltage across the load |
| A. | is 0 V |
| B. | is 12 V |
| C. | is 120 V |
| D. | cannot be determined |
| Answer» C. is 120 V | |
| 11. |
Find the Norton circuit, that is, and , for the circuit given below. |
| A. | 478 mA, 12.8 |
| B. | 750 mA, 12.8 |
| C. | 478 mA, 6.8 |
| D. | 750 mA, 6.8 |
| Answer» B. 750 mA, 12.8 | |
| 12. |
A 120 load is connected across a voltage source with = 12 V and = 8 . The voltage across the load is |
| A. | 11.25 V |
| B. | 0 V |
| C. | 12 V |
| D. | 1.13 V |
| Answer» B. 0 V | |
| 13. |
Determine for the circuit consisting of , , , and shown in the given circuit. |
| A. | 676 mA |
| B. | 245 mA |
| C. | 431 mA |
| D. | 75 mA |
| Answer» C. 431 mA | |
| 14. |
A 120 V voltage source has a source resistance, , of 60 . The equivalent current source is |
| A. | 2 A |
| B. | 4 A |
| C. | 200 mA |
| D. | 400 mA |
| Answer» B. 4 A | |
| 15. |
A 12 V source has an internal resistance of 90 . If a load resistance of 20 is connected to the voltage source, the load power, , is |
| A. | 2.38 mW |
| B. | 2.38 W |
| C. | 238 mW |
| D. | 23.8 W |
| Answer» D. 23.8 W | |
| 16. |
Find the current through in the given circuit. |
| A. | 0.16 A |
| B. | 0.24 A |
| C. | 0.2 A |
| D. | 0.04 A |
| Answer» B. 0.24 A | |
| 17. |
Find for the circuit given. |
| A. | 34 |
| B. | 68 |
| C. | 120 |
| D. | 154 |
| Answer» E. | |
| 18. |
An 18 V source has an internal resistance of 70 . If a load resistance of 33 is connected to the voltage source, the load power, , is |
| A. | 0 W |
| B. | 1 W |
| C. | 175 mW |
| D. | 18 mW |
| Answer» C. 175 mW | |
| 19. |
A certain current source has the values = 4 µA and = 1.2 M. The values for an equivalent voltage source are |
| A. | 4.8 |
| B. | V, 1.2 M |
| C. | 1 V, 1.2 M |
| D. | 4.8 V, 4.8 M |
| E. | 4.8 V, 1.2 M |
| Answer» E. 4.8 V, 1.2 M | |
| 20. |
A 680 load resistor, , is connected across a constant current source of 1.2 A. The internal source resistance, , is 12 k. The load current, , is |
| A. | 0 A |
| B. | 1.2 A |
| C. | 114 mA |
| D. | 1.14 A |
| Answer» E. | |
| 21. |
Find the current through of the given circuit. |
| A. | 30.7 mA |
| B. | 104 mA |
| C. | 74 mA |
| D. | 134 mA |
| Answer» E. | |
| 22. |
A 2 is connected across a voltage source, , of 110 V. The source's internal resistance is 24 . What is the output voltage across the load? |
| A. | 8.5 V |
| B. | 85 V |
| C. | 0 V |
| D. | 110 V |
| Answer» B. 85 V | |
| 23. |
The Thevenin equivalent voltage () is the short-circuit voltage between two terminals in a circuit. |
| A. | True |
| B. | False |
| Answer» C. | |
| 24. |
Transistors act basically as voltage sources. |
| A. | True |
| B. | False |
| Answer» C. | |
| 25. |
A practical current source has a finite internal resistance. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 26. |
Norton's equivalent current () is an open-circuit current between two points in a circuit. |
| A. | True |
| B. | False |
| Answer» C. | |
| 27. |
A practical voltage source has a nonzero internal resistance. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 28. |
An ideal current source has zero internal resistance. |
| A. | True |
| B. | False |
| Answer» C. | |
| 29. |
Conversions between delta-type and wye-type circuit arrangements are useful in certain specialized applications. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 30. |
What is the Thevenin equivalent ( and ) for the circuit given? |
| A. | 6.4 V, 422 |
| B. | 6.4 V, 560 |
| C. | 6.4 V, 680 |
| D. | 30 V, 422 |
| Answer» B. 6.4 V, 560 | |
| 31. |
Find the total current through in the given circuit. |
| A. | 7.3 mA |
| B. | 5.5 mA |
| C. | 12.8 mA |
| D. | 1.8 mA |
| Answer» E. | |
| 32. |
A 12 V source has an internal resistance of 90 . If a load resistance of 20 is connected to the voltage source, the load power, PL, is |
| A. | 2.38 mW |
| B. | 2.38 W |
| C. | 238 mW |
| D. | 23.8 W |
| Answer» D. 23.8 W | |
| 33. |
A certain current source has the values IS = 4 µA and RS = 1.2 M. The values for an equivalent voltage source are |
| A. | 4.8 V, 1.2 M |
| B. | 1 V, 1.2 M |
| C. | 4.8 V, 4.8 M |
| D. | 4.8 V, 1.2 M |
| Answer» E. | |
| 34. |
Referring to the given circuit, determine VTH and RTH if a 68 resistor is connected in parallel across R2 and R3. |
| A. | 3.3 V, 148 |
| B. | 330 mV, 148 |
| C. | 3.3 V, 68 |
| D. | 330 mV, 68 |
| Answer» B. 330 mV, 148 | |
| 35. |
A 120 load is connected across a voltage source with VS = 12 V and RS = 8 . The voltage across the load is |
| A. | 11.25 V |
| B. | 0 V |
| C. | 12 V |
| D. | 1.13 V |
| Answer» B. 0 V | |
| 36. |
A 12 mA current source has an internal resistance, RS, of 1.2 k. The equivalent voltage source is |
| A. | 144 V |
| B. | 14.4 V |
| C. | 7.2 V |
| D. | 72 mV |
| Answer» C. 7.2 V | |
| 37. |
A 470 RL is connected across a voltage source, VS, of 120 V. The source's internal resistance, RS, is 12 . What is the output voltage across the load? |
| A. | 120 V |
| B. | 0 V |
| C. | 117 V |
| D. | 12 V |
| Answer» D. 12 V | |
| 38. |
A 2 RL is connected across a voltage source, VS, of 110 V. The source's internal resistance is 24 . What is the output voltage across the load? |
| A. | 8.5 V |
| B. | 85 V |
| C. | 0 V |
| D. | 110 V |
| Answer» B. 85 V | |
| 39. |
Find the Thevenin equivalent (VTH and RTH) between terminals A and B of the circuit given. |
| A. | 62 mV, 167 Ω |
| B. | .62 V, 167 Ω |
| C. | .62 V, 188 Ω |
| D. | 62 mV, 188 Ω |
| Answer» C. .62 V, 188 Ω | |
| 40. |
Referring to the given circuit, determine VTH and RTH if a 68 Ω resistor is connected in parallel across R2 and R3. |
| A. | .3 V, 148 Ω |
| B. | 30 mV, 148 Ω |
| C. | .3 V, 68 Ω |
| D. | 30 mV, 68 Ω |
| Answer» B. 30 mV, 148 Ω | |
| 41. |
A certain current source has the values IS = 4 µA and RS = 1.2 MO. The values for an equivalent voltage source are |
| A. | 4.8 µV, 1.2 MΩ |
| B. | 1 V, 1.2 MΩ |
| C. | 4.8 V, 4.8 MΩ |
| D. | 4.8 V, 1.2 MΩ |
| Answer» E. | |
| 42. |
A certain voltage source has the values VS = 30 V and RS = 6 Ω. The values for an equivalent current source are |
| A. | 5 A, 6 Ω |
| B. | 30 A, 6 Ω |
| C. | 5 A, 30 Ω |
| D. | 30 A, 5 Ω |
| Answer» B. 30 A, 6 Ω | |
| 43. |
Norton's equivalent current (IN) is an open-circuit current between two points in a circuit. |
| A. | True |
| B. | False |
| Answer» C. | |
| 44. |
Find the current in R2 of the given circuit, using the superposition theorem. |
| A. | 16.7 mA |
| B. | 33.3 mA |
| C. | 50 mA |
| D. | 16.6 mA |
| Answer» D. 16.6 mA | |
| 45. |
A 12 mA current source has an internal resistance, RS, of 1.2 kΩ. The equivalent voltage source is |
| A. | 144 V |
| B. | 14.4 V |
| C. | 7.2 V |
| D. | 72 mV |
| Answer» C. 7.2 V | |
| 46. |
A 120 V voltage source has a source resistance, RS, of 60 Ω. The equivalent current source is |
| A. | 2 A |
| B. | 4 A |
| C. | 200 mA |
| D. | 400 mA |
| Answer» B. 4 A | |
| 47. |
The Thevenin equivalent voltage (VTH) is the short-circuit voltage between two terminals in a circuit. |
| A. | True |
| B. | False |
| Answer» C. | |
| 48. |
A 680 Ω load resistor, RL, is connected across a constant current source of 1.2 A. The internal source resistance, RS, is 12 kΩ. The load current, RL, is |
| A. | 0 A |
| B. | 1.2 A |
| C. | 114 mA |
| D. | 1.14 A |
| Answer» E. | |
| 49. |
A practical current source has a finite internal resistance. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 50. |
A practical voltage source has a nonzero internal resistance. |
| A. | True |
| B. | False |
| Answer» B. False | |