1. The gain of an amplifier is expressed in db because ___________ A. It is a simple unit B. Calculations become easy C. Human ear response is logarithmic D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
2. RC coupling is not used to amplify extremely low frequencies because A. There is considerable power loss B. There is hum in the output C. Electrical size of coupling capacitor becomes very large D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
3. A current amplification of 2000 is a gain of ___________ A. 3 db B. 66 db C. 20 db D. 200 db Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
4. If the power level of an amplifier reduces to half, the db gain will fall by . A. 5 db B. 2 db C. 10 db D. 3 db Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
5. The number of stages that can be directly coupled is limited because A. Changes in temperature cause thermal instability B. Circuit becomes heavy and costly C. It becomes difficult to bias the circuit D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
6. In the initial stages of a multistage amplifier, we use ___________ A. RC coupling B. Transformer coupling C. Direct coupling D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
7. A radio receiver has ___________ of amplification A. One stage B. Two stages C. Three stages D. More than one stages Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
8. RC coupling is used for ___________ amplification A. Voltage B. Current C. Power D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
9. Transformer coupling is used for ___________ amplification A. Power B. Voltage C. Current D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
10. The lower and upper cut off frequencies are also called ___________ frequencies A. Sideband B. Resonant C. Half-resonant D. Half-power Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
