Exercise :: Analog Electronics - Section 6
- Analog Electronics - Section 1
- Analog Electronics - Section 2
- Analog Electronics - Section 3
- Analog Electronics - Section 4
- Analog Electronics - Section 5
- Analog Electronics - Section 6
- Analog Electronics - Section 7
- Analog Electronics - Section 8
- Analog Electronics - Section 9
- Analog Electronics - Section 10
- Analog Electronics - Section 11
- Analog Electronics - Section 12
- Analog Electronics - Section 13
- Analog Electronics - Section 14
- Analog Electronics - Section 15
- Analog Electronics - Section 16
- Analog Electronics - Section 17
- Analog Electronics - Section 18
- Analog Electronics - Section 19
- Analog Electronics - Section 20
- Analog Electronics - Section 21
1. | A voltage tripler circuit and voltage quadrupler circuit use identical components. Then |
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Answer: Option D Explanation: Since voltage quadrupler circuit uses more components, voltage drop will be more and voltage regulation poorer. |
2. | A Ge diode operated at a junction temperature of 27°C. For a forward current of 10 mA, VD is found to be 0.3 V. If VD = 0.4 V then forward current will be |
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Answer: Option C Explanation:
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3. | In a power amplifier the collector current flows for 270° of the input cycle. The operations is |
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Answer: Option C Explanation: In class A operation IC exists for 360°. In class B operation IC exists for 180°. In between there is the class AB. |
4. | An amplifier has input impedance of 4 kΩ and output impedance of 80 kΩ. It is used in negative feedback circuit with 10% feedback. If open loop gain is 90, the closed loop input and output impedances are |
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Answer: Option A Explanation: Closed loop input impedance = 4 (1 + 0.1 x 90) = 40 kΩ, Closed loop Output impedance = |
5. | In figure the current through resistor R |
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Answer: Option A Explanation:
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