MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Alternating Current vs Direct Current knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The signal voltage gain of an amplifier, AV, is defined as __________. |
| A. | [A]. |
| B. | AV = IC x RC |
| C. | [C]. |
| D. | [D]. |
| Answer» B. AV = IC x RC | |
| 2. |
If an input signal ranges from 20–40 A (microamps), with an output signal ranging from .5–1.5 mA (milliamps), what is the ac beta? |
| A. | 0.05 |
| B. | 20 |
| C. | 50 |
| D. | 500 |
| Answer» D. 500 | |
| 3. |
The symbol hfe is the same as: |
| A. | [A]. |
| B. | [B]. |
| C. | hi-fi |
| D. | [D]. |
| Answer» B. [B]. | |
| 4. |
If an input signal ranges from 20–40 A (microamps), with an output signal ranging from .5–1.5 mA (milliamps), what is the ac beta? |
| A. | 0.05 |
| B. | 20 |
| C. | 50 |
| D. | 500 |
| Answer» D. 500 | |
| 5. |
What is the current gain for a common-base configuration where I E = 4.2 mA and I C = 4.0 mA? |
| A. | 16.80 |
| B. | 1.05 |
| C. | 0.20 |
| D. | 0.95 |
| Answer» E. | |
| 6. |
When a silicon diode is forward biased, what is V BE for a C-E configuration? |
| A. | voltage-divider bias |
| B. | 0.4 V |
| C. | 0.7 V |
| D. | emitter voltage |
| Answer» D. emitter voltage | |
| 7. |
If V CC = +18 V, voltage-divider resistor R 1 is 4.7 k , and R 2 is 1500 , what is the base bias voltage? |
| A. | 8.70 V |
| B. | 4.35 V |
| C. | 2.90 V |
| D. | 0.7 V |
| Answer» C. 2.90 V | |
| 8. |
A current ratio of I C /I E is usually less than one and is called: |
| A. | beta |
| B. | theta |
| C. | alpha |
| D. | omega |
| Answer» D. omega | |
| 9. |
A transistor has a of 250 and a base current, I B , of 20 A. The collector current, I C , equals: |
| A. | 500 A |
| B. | 5 mA |
| C. | 50 mA |
| D. | 5 A |
| Answer» C. 50 mA | |