Electronics and Communication Engineering - Analog Electronics
Exercise :: Analog Electronics - Section 9
| 1. |
Which of the following amplifier circuits has highest input impedance? |
| A. |
Circuit using BJT | | B. |
Circuit using JFET | | C. |
Circuit using MOSFET | | D. |
Either (a) or (b) |
Answer: Option C
Explanation:
|
| 2. |
Which of the following device acts as an N-P-N and a P-N-P transistor connected base to base and emitter to controller? |
Answer: Option B
Explanation:
|
| 3. |
A differentiating amplifier has capacitor in the input path. |
Answer: Option A
Explanation:
|
| 4. |
Which of the following statement about TRIAC is incorrect? |
| A. |
It is not particularly suited to A.C. or mains power control | | B. |
Any one of its main terminals can be used either as cathode or as anode | | C. |
It can be triggered in response to both positive and negative gate terminals | | D. |
None of the above |
Answer: Option A
Explanation:
|
| 5. |
A half wave diode rectifier and full wave diode bridge rectifier both have an input frequency of 50 Hz. The frequencies of outputs respectively are |
| A. |
100 Hz and 50 Hz | | B. |
50 Hz and 100 Hz | | C. |
100 Hz each | | D. |
50 Hz each |
Answer: Option B
Explanation:
|
