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.
| 51. |
An ideal current source has zero internal resistance. |
| A. | True |
| B. | False |
| Answer» C. | |
| 52. |
Find the Thevenin equivalent (VTH and RTH) between terminals A and B of the circuit given. |
| A. | 562 mV, 167 Ω |
| B. | 5.62 V, 167 Ω |
| C. | 5.62 V, 188 Ω |
| D. | 562 mV, 188 Ω |
| Answer» C. 5.62 V, 188 Ω | |
| 53. |
A 120 Ω load is connected across an ideal voltage source with VS = 12 V. The voltage across the load is |
| A. | 0 V |
| B. | 12 V |
| C. | 120 V |
| D. | Cannot be determined |
| Answer» C. 120 V | |
| 54. |
Referring to circuit given, if R1 is changed to a 68 Ω 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 | |
| 55. |
Find the Thevenin equivalent (VTH and RTH) between terminals A and B of the circuit given below. |
| A. | 4.16 V, 120 Ω |
| B. | 41.6 V, 120 Ω |
| C. | 4.16 V, 70 Ω |
| D. | 41.67 V, 70 Ω |
| Answer» E. | |
| 56. |
Find the Norton circuit, that is, IIN and RN, for the circuit given below. |
| A. | 478 mA, 12.8 Ω |
| B. | 750 mA, 12.8 Ω |
| C. | 478 mA, 6.8 Ω |
| D. | 750 mA, 6.8 Ω |
| Answer» B. 750 mA, 12.8 Ω | |
| 57. |
Conversions between delta-type and wye-type circuit arrangements are useful in certain specialized applications. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 58. |
Referring to the given circuit, determine VTH and RTH if a 68 Ω resistor is connected in parallel across R2 and R3. |
| A. | 3.3 V, 148 Ω |
| B. | 330 mV, 148 Ω |
| C. | 3.3 V, 68 Ω |
| D. | 330 mV, 68 Ω |
| Answer» B. 330 mV, 148 Ω | |
| 59. |
An 18 V source has an internal resistance of 70 Ω. If a load resistance of 33 Ω is connected to the voltage source, the load power, PL, is |
| A. | 0 W |
| B. | 1 W |
| C. | 175 mW |
| D. | 18 mW |
| Answer» C. 175 mW | |
| 60. |
A 12 V source has an internal resistance of 90 Ω. If a load resistance of 20 Ω 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 | |
| 61. |
A 120 Ω load is connected across a voltage source with VS = 12 V and RS = 8 Ω. The voltage across the load is |
| A. | 11.25 V |
| B. | 0 V |
| C. | 12 V |
| D. | 1.13 V |
| Answer» B. 0 V | |
| 62. |
A 470 Ω RL is connected across a voltage source, VS, of 120 V. The source's internal resistance, RS, is 12 Ω. What is the output voltage across the load? |
| A. | 120 V |
| B. | 0 V |
| C. | 117 V |
| D. | 12 V |
| Answer» D. 12 V | |
| 63. |
A 2 Ω RL is connected across a voltage source, VS, of 110 V. The source's internal resistance is 24 Ω. 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 | |
| 64. |
What is the Thevenin equivalent (VTH and RTH) for the circuit given? |
| A. | 6.4 V, 422 Ω |
| B. | 6.4 V, 560 Ω |
| C. | 6.4 V, 680 Ω |
| D. | 30 V, 422 Ω |
| Answer» B. 6.4 V, 560 Ω | |
| 65. |
Transistors act basically as voltage sources. |
| A. | True |
| B. | False |
| Answer» C. | |
| 66. |
A certain voltage source has the values VS = 30 V and RS = 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 | |
| 67. |
Referring to the given circuit, the voltage and current for the load resistor, RL, 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 | |
| 68. |
Referring to circuit given, if R1 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 | |
| 69. |
A 120 load is connected across an ideal voltage source with VS = 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 | |
| 70. |
An ideal voltage source has zero internal resistance. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 71. |
In a two-source circuit, one source acting alone produces 12 mA through a given branch. The other source acting alone produces 10 mA in the opposite direction through the same branch. The actual current through the branch is |
| A. | 22 mA |
| B. | 12 mA |
| C. | 10 mA |
| D. | 2 mA |
| Answer» E. | |
| 72. |
A 120 V voltage source has a source resistance, RS, of 60 . The equivalent current source is |
| A. | 0.083333333333333 |
| B. | 0.16666666666667 |
| C. | 200 mA |
| D. | 400 mA |
| Answer» B. 0.16666666666667 | |
| 73. |
Find the current through R1 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 | |
| 74. |
You cannot convert a voltage source to an equivalent current source, or vice versa. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» C. 1 | |
| 75. |
Find the current through R2 of the given circuit. |
| A. | 30.7 mA |
| B. | 104 mA |
| C. | 74 mA |
| D. | 134 mA |
| Answer» E. | |
| 76. |
What is the Thevenin equivalent (VTH and RTH) 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 | |
| 77. |
Some circuits require more than one voltage or current source. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» B. | |
| 78. |
Determine IN for the circuit consisting of VS, R1, R2, and R3 shown in the given circuit. |
| A. | 676 mA |
| B. | 245 mA |
| C. | 431 mA |
| D. | 75 mA |
| Answer» C. 431 mA | |
| 79. |
Find the total current through R3 in the given circuit. |
| A. | 7.3 mA |
| B. | 5.5 mA |
| C. | 12.8 mA |
| D. | 1.8 mA |
| Answer» E. | |
| 80. |
Find RN for the circuit given. |
| A. | 34 |
| B. | 68 |
| C. | 120 |
| D. | 154 |
| Answer» E. | |
| 81. |
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, PL, is |
| A. | 0 W |
| B. | 1 W |
| C. | 175 mW |
| D. | 18 mW |
| Answer» C. 175 mW | |
| 82. |
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. | |
| 83. |
A 680 load resistor, RL, is connected across a constant current source of 1.2 A. The internal source resistance, RS, is 12 k. The load current, RL, is |
| A. | 0 |
| B. | 1.2 A |
| C. | 114 mA |
| D. | 1.14 A |
| Answer» E. | |
| 84. |
Find the Thevenin equivalent (VTH and RTH) 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. | |