MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A discharged capacitor has ______ charges on its plates. |
| A. | no |
| B. | unequal |
| C. | equal |
| D. | negative |
| Answer» D. negative | |
| 2. |
A ___ capacitor allows ac signals to pass while blocking dc signals. |
| A. | filter |
| B. | bypass |
| C. | decoupling |
| D. | coupling |
| Answer» E. | |
| 3. |
The rate of charge or discharge of a capacitor is based on ___ function. |
| A. | an exponential |
| B. | a linear |
| C. | a parabolic |
| D. | a trigonometric |
| Answer» B. a linear | |
| 4. |
How much current will flow in a 100 Hz series RLC circuit if VS = 20 V, RT = 66 ohms, and XT = 47 ohms? |
| A. | 1.05 A |
| B. | 303 mA |
| C. | 247 mA |
| D. | 107 mA |
| Answer» D. 107 mA | |
| 5. |
What is the Q (Quality factor) of a series circuit that resonates at 6 kHz, has equal reactance of 4 kilo-ohms each, and a resistor value of 50 ohms? |
| A. | 0.001 |
| B. | 50 |
| C. | 80 |
| D. | 4.0 |
| Answer» D. 4.0 | |
| 6. |
The frequency of the repetitive pulse waveform in the given circuit equals ___. |
| A. | 500 Hz |
| B. | 50 Hz |
| C. | 100 Hz |
| D. | 125 Hz |
| Answer» D. 125 Hz | |
| 7. |
The peak voltage across R2 in the given circuit equals _____. |
| A. | 7.2 V |
| B. | 10.18 V |
| C. | 8.8 V |
| D. | 8 V |
| Answer» C. 8.8 V | |
| 8. |
The frequency of the sine wave in the given circuit equals ___. |
| A. | 4 kHz |
| B. | 800 Hz |
| C. | 20 kHz |
| D. | 250 Hz |
| Answer» D. 250 Hz | |
| 9. |
Increasing the number of turns in a conductor loop in a basic generator will ___. |
| A. | increase the generator's output voltage amplitude |
| B. | increase the generator's output frequency |
| C. | decrease the generator's output voltage amplitude |
| D. | decrease the generator's output frequency |
| Answer» B. increase the generator's output frequency | |
| 10. |
One revolution of a conductor through the magnetic field of a basic generator will produce two complete sine waves. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
A sine wave's peak-to-peak voltage value is always twice its peak voltage value. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
If a wave has frequency of 2 Hz, it has a period of ? |
| A. | 1s |
| B. | 1/2 s |
| C. | 2.5s |
| D. | 2s |
| Answer» C. 2.5s | |
| 13. |
90 equals 1.57 radians. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
A 1 Hz sine wave has a period of 1 s. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
106,100,000 Hz is the same as ___ MHz. |
| A. | 106.1 |
| B. | 1,061 |
| C. | 10,610 |
| D. | 106,100 |
| Answer» B. 1,061 | |
| 16. |
1300 10 12 F is the same as 1300 ___. |
| A. | mF |
| B. | <img src="/_files/images/basic-electronics/basics/mu.gif" alt="mu.gif" align="absmiddle"> |
| C. | F |
| D. | nF |
| E. | pF |
| Answer» E. pF | |
| 17. |
The basic capacitor is made up of ___ that separates two conductive plates. |
| A. | a conductor |
| B. | a spacer |
| C. | a dielectric |
| D. | an electrode |
| Answer» D. an electrode | |
| 18. |
A circuit whose output voltage is proportional to the rate of change of the input voltage is called a(n) ______ . |
| A. | differentiator |
| B. | integrator |
| C. | curve averager |
| D. | mixer |
| Answer» B. integrator | |
| 19. |
Capacitive reactance is inversely proportional with frequency. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 20. |
To find the total capacitance of capacitors in parallel, sum the values of the individual capacitors. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 21. |
The total capacitance in the given circuit is larger than the value of C4. |
| A. | True |
| B. | False |
| Answer» C. | |
| 22. |
Which is considered to be the common reference for a parallel circuit? |
| A. | Voltage |
| B. | Current |
| C. | Power |
| D. | Resistance |
| Answer» B. Current | |
| 23. |
A parallel circuit is also used as a divider for: |
| A. | conductance |
| B. | voltage |
| C. | power |
| D. | current |
| Answer» E. | |
| 24. |
What is the total resistance of four 1 k parallel-connected resistors? |
| A. | 200 ohms |
| B. | 250 ohms |
| C. | 400 ohms |
| D. | 4 kilohms |
| Answer» C. 400 ohms | |
| 25. |
Which are the better test devices used to isolate a suspected open component within a parallel circuit? |
| A. | a voltmeter or an ohmmeter |
| B. | neither an ammeter nor a voltmeter |
| C. | a wattmeter or a voltmeter |
| D. | an ammeter or an ohmmeter |
| Answer» E. | |
| 26. |
What does P2 equal in the given circuit? |
| A. | 45 mW |
| B. | 405 mW |
| C. | 450 mW |
| D. | 900 mW |
| Answer» C. 450 mW | |
| 27. |
If 550 mA of current leaves a node that had 250 mA entering from one branch, how much current would enter from the other? |
| A. | 250 mA |
| B. | 300 mA |
| C. | 550 mA |
| D. | 800 mA |
| Answer» C. 550 mA | |
| 28. |
What procedure should be followed when troubleshooting with an ammeter or voltmeter? |
| A. | Short the leads and adjust. |
| B. | Check the meter s external power supply. |
| C. | Start with the highest scale and adjust down to a lower scale. |
| D. | Start with the lowest scale and adjust up to a higher scale. |
| Answer» D. Start with the lowest scale and adjust up to a higher scale. | |
| 29. |
When a parallel 5 k resistor and a 25 k resistor have a 10 V supply, what is the total power loss? |
| A. | 2.4 mW |
| B. | 3.3 mW |
| C. | 24 mW |
| D. | 33 mW |
| Answer» D. 33 mW | |
| 30. |
7450 10 5 amperes equals 74.5 ___. |
| A. | A |
| B. | mA |
| C. | <img src="/_files/images/basic-electronics/basics/mu.gif" alt="mu.gif" align="absmiddle"> |
| D. | A |
| E. | nA |
| Answer» C. <img src="/_files/images/basic-electronics/basics/mu.gif" alt="mu.gif" align="absmiddle"> | |
| 31. |
The number 5200 10 2 equals ___ 101. |
| A. | 0.52 |
| B. | 5.2 |
| C. | 52 |
| D. | 520 |
| Answer» C. 52 | |
| 32. |
The ___ is the unit for resistance, reactance, and impedance. |
| A. | farad |
| B. | henry |
| C. | ohm |
| D. | watt |
| Answer» D. watt | |
| 33. |
The joule is the unit for ___. |
| A. | energy |
| B. | charge |
| C. | time |
| D. | frequency |
| Answer» B. charge | |
| 34. |
The bandwidth is ______ in the given circuit. |
| A. | 179.28 Hz |
| B. | 3.54 kHz |
| C. | 4.44 kHz |
| D. | 15.85 kHz |
| Answer» C. 4.44 kHz | |
| 35. |
An LED can be tested with an ohmmeter. |
| A. | True |
| B. | False |
| Answer» C. | |
| 36. |
Reverse biasing a pn junction allows the flow of majority current. |
| A. | True |
| B. | False |
| Answer» C. | |
| 37. |
A zener diode can be tested with an ohmmeter. |
| A. | True |
| B. | False |
| Answer» C. | |
| 38. |
A diode can be tested with an ohmmeter. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 39. |
A zener diode has a larger breakdown voltage than a diode. |
| A. | True |
| B. | False |
| Answer» C. | |
| 40. |
The positive lead of a diode is the cathode. |
| A. | True |
| B. | False |
| Answer» C. | |
| 41. |
It is not possible to use a half-wave rectifier circuit without a transformer. |
| A. | True |
| B. | False |
| Answer» C. | |
| 42. |
Electrons in the conduction band are the only ones that are included in the electron current flow. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 43. |
Special diodes designed to conduct in the reverse direction are called _______________ diodes. |
| A. | zener |
| B. | varactor |
| C. | LED |
| D. | switching |
| Answer» B. varactor | |
| 44. |
___ occurs when a pn junction is first formed. |
| A. | Recombination |
| B. | Covalent bonding |
| C. | Crystallization |
| D. | Breakdown |
| Answer» B. Covalent bonding | |
| 45. |
0.00015 V can be expressed in powers of ten as 1.5 10 4 V. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 46. |
Precision refers to the difference between the measured value and the accepted value. |
| A. | True |
| B. | False |
| Answer» C. | |
| 47. |
4200 W is the same as 4.2 kW. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 48. |
Multiplying 5 106 by 4 103 results in 20 1018. |
| A. | True |
| B. | False |
| Answer» C. | |
| 49. |
The metric prefix giga is used to represent one billion. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 50. |
Connecting a capacitor filter to the circuit in the given circuit will___. |
| A. | produce a nearly-constant dc voltage |
| B. | reduce the output voltage |
| C. | increase the ripple voltage |
| D. | lower the surge current |
| Answer» B. reduce the output voltage | |