MCQOPTIONS
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MCQOPTIONS
This section includes 23 Mcqs, each offering curated multiple-choice questions to sharpen your Alternating Current and Voltage knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Find R N for the circuit given. |
| A. | 34 |
| B. | 68 |
| C. | 120 |
| D. | 154 |
| Answer» E. | |
| 2. |
Referring to the given circuit, determine V TH and R TH if a 68 resistor is connected in parallel across R 2 and R 3 . |
| A. | 3.3 V, 148 |
| B. | 330 mV, 148 |
| C. | 3.3 V, 68 |
| D. | 330 mV, 68 |
| Answer» B. 330 mV, 148 | |
| 3. |
A 12 mA current source has an internal resistance, R S , 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 | |
| 4. |
Find the Thevenin equivalent ( V TH and R TH ) 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 | |
| 5. |
Referring to circuit given, if R 1 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. |
A 120 load is connected across a voltage source with V S = 12 V and R S = 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 | |
| 7. |
Find the Norton circuit, that is, I IN and R N , 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 | |
| 8. |
A 120 load is connected across an ideal voltage source with V S = 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 | |
| 9. |
A certain voltage source has the values V S = 30 V and R S = 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 2 R L is connected across a voltage source, V S , 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 | |
| 11. |
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, P L , is |
| A. | 0 W |
| B. | 1 W |
| C. | 175 mW |
| D. | 18 mW |
| Answer» C. 175 mW | |
| 12. |
A 470 R L is connected across a voltage source, V S , of 120 V. The source's internal resistance, R S , 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 | |
| 13. |
Find the current in R 2 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 | |
| 14. |
Referring to the given circuit, the voltage and current for the load resistor, R L , 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 | |
| 15. |
What is the Thevenin equivalent ( V TH and R TH ) 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 | |
| 16. |
Find the current through R 1 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. |
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, P L , is |
| A. | 2.38 mW |
| B. | 2.38 W |
| C. | 238 mW |
| D. | 23.8 W |
| Answer» D. 23.8 W | |
| 18. |
A 120 V voltage source has a source resistance, R S , of 60 . The equivalent current source is |
| A. | 2 A |
| B. | 4 A |
| C. | 200 mA |
| D. | 400 mA |
| Answer» B. 4 A | |
| 19. |
Determine I N for the circuit consisting of V S , R 1 , R 2 , and R 3 shown in the given circuit. |
| A. | 676 mA |
| B. | 245 mA |
| C. | 431 mA |
| D. | 75 mA |
| Answer» C. 431 mA | |
| 20. |
Find the current through R 2 of the given circuit. |
| A. | 30.7 mA |
| B. | 104 mA |
| C. | 74 mA |
| D. | 134 mA |
| Answer» E. | |
| 21. |
A 680 load resistor, R L , is connected across a constant current source of 1.2 A. The internal source resistance, R S , is 12 k . The load current, R L , is |
| A. | 0 A |
| B. | 1.2 A |
| C. | 114 mA |
| D. | 1.14 A |
| Answer» E. | |
| 22. |
Find the total current through R 3 in the given circuit. |
| A. | 7.3 mA |
| B. | 5.5 mA |
| C. | 12.8 mA |
| D. | 1.8 mA |
| Answer» E. | |
| 23. |
Find the Thevenin equivalent ( V TH and R TH ) 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. | |