Exercise :: Analog Electronics - Section 5
- 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 CB amplifier has a = 0.98 and RL = 600 Ω. If IE = 3.5 mA, the current gain is |
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Answer: Option B Explanation: Current gain of CB amplifier is a. |
| 2. | funity of an op-amp is about 1 kHz. |
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Answer: Option B Explanation: It is about 1 MHz. |
| 3. | Assertion (A): In an RC coupled amplifier the junction capacitances can be neglected at low frequencies but not at high frequencies Reason (R): Capacitive reactance is inversely proportional to frequency. |
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Answer: Option A Explanation: At high frequencies XC is very small. |
| 4. | In figure, D1 turns on when |
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Answer: Option A Explanation: D1 is forward biased when vi > V1. |
| 5. | In a full wave rectifier circuit using centre tapped transformer, the peak voltage across half of the secondary winding is 30 V. Then PIV is |
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Answer: Option B Explanation: In full wave circuit using centre tapped transformer PIV = 2Vm . |