5555555555
86. In a class A transformer-coupled power amplifier, ________ winding resistance of the transformer determine(s) the dc load line for the circuit.
(a) the ac
(b) the dc
(c) both the ac and dc
(d) neither the ac nor dc
| Subject Name : Electronics Engineering |
| Exam Name : IIT GATE, UPSC ESE, RRB, SSC, DMRC, NMRC, BSNL, DRDO, ISRO, BARC, NIELIT |
| Posts Name : Assistant Engineer, Management Trainee, Junior Engineer, Technical Assistant |
| Electronics & Communication Engineering Books
|
| GATE 2023 Total Info | ENGG DIPLOMA | UGC NET Total Info |
| IES 2023 Total Info | PSUs 2022 Total Info | CSIR UGC NET Total Info |
| JAM 2023 Total Info | M TECH 2023 Total Info | RAILWAY 2022 Total Info |
Related Posts
555555555589. A class A amplifier dissipates ________ power when the load is drawing maximum power from the circuit. (a) the least (b) about the same (c) the most (d) None of the above- 555555555515. The dc load line and ac load line both have the same ________ . (a) x-intercept (b) y-intercept (c) slope (d) Q-point
- Electronics Engineering » Notes » Single Stage Transistor Amplifiers 1. There are four classes of amplifier operations : Class A, Class AB, Class B, and Class C. 2. Class A amplifiers operate entirely in the active region and thus the output if a faithful reproduction of the input signal with some amplification. In a Class A amplifier the efficiency is very low. Class A amplifiers are usedfor audio and frequency amplification. 3. Class AB amplifiers are biased so that the collector current is cutoff for a portion of one cycle of the input and so the efficiency is higher than that of a Class A amplifier. Class AB amplifiers are normally used as push−pull amplifiers to alleviate the crossover distortion of Class B amplifiers. 4. Class B amplifiers are biased so that the collector current is cutoff during one−half of the input signal. Therefore, the efficiency in a Class B amplifier is higher than that of a Class AB amplifier. Class B amplifiers are used in amplifiers requiring high power output. 5. Class C amplifiers are biased so that the collector current flows for less than one−half cycle of the input signal. Class C amplifiers have the highest efficiency and are used for radio frequency amplification in transmitters. Figure-1 :…
- 555555555577. Which of the following is (are) power amplifiers? (a) Class A (b) Class B or AB (c) Class C or D (d) All of the above
- AC and DC Bridges » Exercise - 16. The input to an AC bridges is fed from : (a) An amplifier (b) Regulated power supply (c) Oscillator (d) DC Battery