MCQOPTIONS
Saved Bookmarks
This section includes 73 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. |
A CE amplifier is also called _______________ circuit? |
| A. | Grounded emitter |
| B. | Grounded base |
| C. | Grounded collector |
| D. | None of the above |
| Answer» B. Grounded base | |
| 2. |
In order to get more voltage gain from a transistor amplifier, the transistor used should have ___________ |
| A. | hin base |
| B. | hin collector |
| C. | ide emitter |
| D. | one of the above |
| Answer» B. hin collector | |
| 3. |
If the collector supply is 10V, then collector cut off voltage under d.c. conditions is ___________ |
| A. | 0 V |
| B. | V |
| C. | V |
| D. | 0 V |
| Answer» E. | |
| 4. |
If the power and current gains of a transistor amplifier are 16500 and 100 respectively, then voltage gain is |
| A. | 65 |
| B. | 65 x 104 |
| C. | 00 |
| D. | one of the above |
| Answer» B. 65 x 104 | |
| 5. |
The radio wave picked up by the receiving antenna is amplified abouttimes to have reasonable sound output |
| A. | 000 |
| B. | million |
| C. | 00 |
| D. | 0000 |
| Answer» C. 00 | |
| 6. |
The output power of a transistor amplifier is more than the input power because the additional power is supplied by ___________ |
| A. | ransistor |
| B. | iasing circuit |
| C. | ollector supply VCC |
| D. | one of the above |
| Answer» D. one of the above | |
| 7. |
The purpose of d.c. conditions in a transistor is to ___________ |
| A. | everse bias the emitter |
| B. | orward bias the collector |
| C. | et up operating point |
| D. | one of the above |
| Answer» D. one of the above | |
| 8. |
In the a.c. equivalent circuit of a transistor amplifier, the capacitors are considered ___________ |
| A. | hort |
| B. | pen |
| C. | artially open |
| D. | one of the above |
| Answer» B. pen | |
| 9. |
The ratio of output impedance of a CE amplifier is ___________ |
| A. | bout 1 |
| B. | ow |
| C. | igh |
| D. | oderate |
| Answer» E. | |
| 10. |
The phase difference between the output and input voltages of a CE amplifier is ___________ |
| A. | 80° |
| B. | ° |
| C. | 0° |
| D. | 70° |
| Answer» B. ° | |
| 11. |
If the input capacitor of a transistor amplifier is short-circuited, then |
| A. | ransistor will be destroyed |
| B. | iasing conditions will change |
| C. | ignal will not reach the base |
| D. | one of the above |
| Answer» C. ignal will not reach the base | |
| 12. |
The slope of a.c. load line is ___________ that of d.c. load line |
| A. | he same as |
| B. | ore than |
| C. | ess than |
| D. | one of the above |
| Answer» C. ess than | |
| 13. |
A single stage transistor amplifier contains ___________ and associated circuitry |
| A. | wo transistors |
| B. | ne transistor |
| C. | hree transistor |
| D. | one of the above |
| Answer» C. hree transistor | |
| 14. |
A single stage transistor amplifier with no load sees an a.c. load of |
| A. | C + RE |
| B. | C |
| C. | C || RE |
| D. | C/RE |
| Answer» C. C || RE | |
| 15. |
The purpose of emitter capacitor (i.e. capacitor across RE) is to ___________ |
| A. | void voltage gain drop |
| B. | orward bias the emitter |
| C. | educe noise in the amplifier |
| D. | one of the above |
| Answer» B. orward bias the emitter | |
| 16. |
The value of collector load RC in a transistor amplifier is ___________ the output impedance of the transistor. |
| A. | he same as |
| B. | ess than |
| C. | ore than |
| D. | one of the above |
| Answer» C. ore than | |
| 17. |
For highest power gain, one would use ___________ configuration |
| A. | C |
| B. | B |
| C. | E |
| D. | one of the above |
| Answer» D. one of the above | |
| 18. |
It is generally desired that a transistor should have ___________ input impedance |
| A. | ow |
| B. | ery low |
| C. | igh |
| D. | ery high |
| Answer» D. ery high | |
| 19. |
If RC and RL represent the collector resistance and load resistance respectively in a single stage transistor amplifier, then a.c. load is |
| A. | L + RC |
| B. | C || RL |
| C. | L - RC |
| D. | C |
| Answer» C. L - RC | |
| 20. |
A single stage transistor amplifier with collector load RC and emitter resistance RE has a d.c. load of ___________ |
| A. | C |
| B. | C || RE |
| C. | C - RE |
| D. | C + RE |
| Answer» E. | |
| 21. |
In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of ___________ |
| A. | C + RL |
| B. | C || RL |
| C. | L |
| D. | C |
| Answer» E. | |
| 22. |
An amplifier has a power gain of 100. Its db gain is ___________ |
| A. | 0 db |
| B. | 0 db |
| C. | 0 db |
| D. | one of the above |
| Answer» C. 0 db | |
| 23. |
A transistor amplifier has high output impedance because ___________ |
| A. | mitter is heavily doped |
| B. | ollector has reverse bias |
| C. | ollector is wider than emitter or base |
| D. | one of the above |
| Answer» C. ollector is wider than emitter or base | |
| 24. |
A single stage transistor amplifier with collector load RC and emitter resistance RE has a d.c. load of ___________%! |
| A. | RC |
| B. | RC || RE |
| C. | RC - RE |
| D. | RC + RE |
| Answer» E. | |
| 25. |
In order to get more voltage gain from a transistor amplifier, the transistor used should have ___________%! |
| A. | Thin base |
| B. | Thin collector |
| C. | Wide emitter |
| D. | None of the above |
| Answer» B. Thin collector | |
| 26. |
The output power of a transistor amplifier is more than the input power because the additional power is supplied by ___________%! |
| A. | Transistor |
| B. | Biasing circuit |
| C. | Collector supply VCC |
| D. | None of the above |
| Answer» D. None of the above | |
| 27. |
A single stage transistor amplifier with no load sees an a.c. load of%! |
| A. | RC + RE |
| B. | RC |
| C. | RC || RE |
| D. | RC/RE |
| Answer» C. RC || RE | |
| 28. |
The ratio of output impedance of a CE amplifier is ___________%! |
| A. | About 1 |
| B. | Low |
| C. | High |
| D. | Moderate |
| Answer» E. | |
| 29. |
For highest power gain, one would use ___________ configuration%! |
| A. | CC |
| B. | CB |
| C. | CE |
| D. | none of the above |
| Answer» D. none of the above | |
| 30. |
The slope of a.c. load line is ___________ that of d.c. load line%! |
| A. | The same as |
| B. | More than |
| C. | Less than |
| D. | None of the above |
| Answer» C. Less than | |
| 31. |
*$_A single stage transistor amplifier with collector load RC and emitter resistance RE has a d.c. load of ___________? |
| A. | RC |
| B. | RC || RE |
| C. | RC - RE |
| D. | RC + RE |
| Answer» E. | |
| 32. |
*/*_In order to get more voltage gain from a transistor amplifier, the transistor used should have ___________? |
| A. | Thin base |
| B. | Thin collector |
| C. | Wide emitter |
| D. | None of the above |
| Answer» B. Thin collector | |
| 33. |
*/*_The output power of a transistor amplifier is more than the input power because the additional power is supplied by ___________? |
| A. | Transistor |
| B. | Biasing circuit |
| C. | Collector supply VCC |
| D. | None of the above |
| Answer» D. None of the above | |
| 34. |
*/*_The ratio of output impedance of a CE amplifier is ___________? |
| A. | About 1 |
| B. | Low |
| C. | High |
| D. | Moderate |
| Answer» E. | |
| 35. |
*/*_A single stage transistor amplifier with no load sees an a.c. load of? |
| A. | RC + RE |
| B. | RC |
| C. | RC || RE |
| D. | RC/RE |
| Answer» C. RC || RE | |
| 36. |
*/*_The slope of a.c. load line is ___________ that of d.c. load line? |
| A. | The same as |
| B. | More than |
| C. | Less than |
| D. | None of the above |
| Answer» C. Less than | |
| 37. |
*/*_For highest power gain, one would use ___________ configuration? |
| A. | CC |
| B. | CB |
| C. | CE |
| D. | none of the above |
| Answer» D. none of the above | |
| 38. |
*/*_In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of ___________? |
| A. | RC + RL |
| B. | RC || RL |
| C. | RL |
| D. | RC |
| Answer» E. | |
| 39. |
*/*_If the collector supply is 10V, then collector cut off voltage under d.c. conditions is ___________? |
| A. | 20 V |
| B. | 5 V |
| C. | 2 V |
| D. | 10 V |
| Answer» E. | |
| 40. |
*/*_The purpose of d.c. conditions in a transistor is to ___________? |
| A. | Reverse bias the emitter |
| B. | Forward bias the collector |
| C. | Set up operating point |
| D. | None of the above |
| Answer» D. None of the above | |
| 41. |
*/*_The purpose of emitter capacitor (i.e. capacitor across RE) is to ___________? |
| A. | Avoid voltage gain drop |
| B. | Forward bias the emitter |
| C. | Reduce noise in the amplifier |
| D. | None of the above |
| Answer» B. Forward bias the emitter | |
| 42. |
*/*_The phase difference between the output and input voltages of a CE amplifier is ___________? |
| A. | 180° |
| B. | 0° |
| C. | 90° |
| D. | 270° |
| Answer» B. 0¬¨‚àû | |
| 43. |
*/*_It is generally desired that a transistor should have ___________ input impedance? |
| A. | Low |
| B. | Very low |
| C. | High |
| D. | Very high |
| Answer» D. Very high | |
| 44. |
*/*_A single stage transistor amplifier contains ___________ and associated circuitry? |
| A. | Two transistors |
| B. | One transistor |
| C. | Three transistor |
| D. | None of the above |
| Answer» C. Three transistor | |
| 45. |
%_In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of ____________% |
| A. | RC + RL |
| B. | RC || RL |
| C. | RL |
| D. | RC |
| Answer» E. | |
| 46. |
_ If the collector supply is 10V, then collector cut off voltage under d.c. conditions is ___________$? |
| A. | 20 V |
| B. | 5 V |
| C. | 2 V |
| D. | 10 V |
| Answer» E. | |
| 47. |
_ The purpose of d.c. conditions in a transistor is to ___________$? |
| A. | Reverse bias the emitter |
| B. | Forward bias the collector |
| C. | Set up operating point |
| D. | None of the above |
| Answer» D. None of the above | |
| 48. |
_ The phase difference between the output and input voltages of a CE amplifier is ___________$? |
| A. | 180° |
| B. | 0° |
| C. | 90° |
| D. | 270° |
| Answer» B. 0¬¨‚àû | |
| 49. |
_ The purpose of emitter capacitor (i.e. capacitor across RE) is to ___________$? |
| A. | Avoid voltage gain drop |
| B. | Forward bias the emitter |
| C. | Reduce noise in the amplifier |
| D. | None of the above |
| Answer» B. Forward bias the emitter | |
| 50. |
_ A single stage transistor amplifier contains ___________ and associated circuitry$? |
| A. | Two transistors |
| B. | One transistor |
| C. | Three transistor |
| D. | None of the above |
| Answer» C. Three transistor | |