MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The output in an oscillator is __________ |
| A. | Discontinuous |
| B. | Oscillating |
| C. | Self-sustained |
| D. | Spiked |
| Answer» D. Spiked | |
| 2. |
In the output characteristics, the resistance is the __________ |
| A. | Slope of the curve |
| B. | Trace of the curve |
| C. | Asymptote of the curve |
| D. | Reciprocal of the slope of the curve |
| Answer» E. | |
| 3. |
What is the expression for the Current Amplification factor? |
| A. | ( frac{ Delta I_c}{ Delta V_c} ) |
| B. | ( frac{ Delta V_c}{ Delta I_c} ) |
| C. | (( frac{ Delta I_C}{ Delta I_B})_{V_{CE}} ) |
| D. | (( frac{ Delta I_C}{ Delta I_B})_{V_{BE}} ) |
| Answer» D. (( frac{ Delta I_C}{ Delta I_B})_{V_{BE}} ) | |
| 4. |
From the output characteristics of a transistor, one cannot calculate __________ |
| A. | I<sub>B</sub> |
| B. | V<sub>BE</sub> |
| C. | I<sub>c</sub> |
| D. | V<sub>CE</sub> |
| Answer» C. I<sub>c</sub> | |
| 5. |
In a CE transmitter amplifier, if the amplification factor is 150 and the collector voltage is 4 V and resistance is 2 k , what should be the value of RB, given that the dc base current is 10 times the signal current? |
| A. | 5 k |
| B. | 10 k |
| C. | 15 k |
| D. | 20 k |
| Answer» E. | |
| 6. |
A low input to the transistor gives __________ |
| A. | Low output |
| B. | High Output |
| C. | Normal Output |
| D. | No Output |
| Answer» C. Normal Output | |
| 7. |
In the active state, the emitter-base junction has a higher resistance than the collector-base junction. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
If Ie is the current entering the emitter, Ib is the current leaving the base and Ic is the current leaving the collector in a p-n-p transistor used for amplification, what is the relation between Ie, Ib and Ic? |
| A. | I<sub>e</sub> < I<sub>c</sub> |
| B. | I<sub>c</sub> < I<sub>b</sub> |
| C. | I<sub>b</sub> < I<sub>c</sub> |
| D. | I<sub>e</sub> < I<sub>b</sub> + I<sub>c</sub> |
| Answer» D. I<sub>e</sub> < I<sub>b</sub> + I<sub>c</sub> | |
| 9. |
Which junction is forward biased when transistor is used as an amplifier? |
| A. | Emitter-Base |
| B. | Emitter-Collector |
| C. | Collector-Base |
| D. | No junction is forward biased |
| Answer» B. Emitter-Collector | |
| 10. |
Both the junctions in a transistor are forward biased. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Which region of the transistor is highly doped? |
| A. | Emitter |
| B. | Base |
| C. | Collector |
| D. | Both Emitter and Collector |
| Answer» B. Base | |
| 12. |
The doped region in a transistor are ________ |
| A. | Emitter and Collector |
| B. | Emitter and Base |
| C. | Collector and Base |
| D. | Emitter, Collector and Base |
| Answer» E. | |
| 13. |
BJT stands for __________ |
| A. | Bi-Junction Transfer |
| B. | Blue Junction Transistor |
| C. | Bipolar Junction Transistor |
| D. | Base Junction Transistor |
| Answer» D. Base Junction Transistor | |