Multi Option Question Page 1367

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You Are On Multi Choice Question Bank SET 1367

68351. In a practical oscillator, the magnitude of loop gain Aβ is kept slightly larger than unity and the amplitude of oscillations is limited by

68352. Assertion (A): Direct coupled amplifiers are rarely usedReason (R): Direct coupled amplifiers suffer from the disadvantage of drift

68353. A multistage amplifier has a low pass response with three real poles at s = - w1 - w2 and w3. The approximate overall bandwidth B of the amplifier will be given by

68354. In a feedback series regular circuit, the output voltage is regulated by controlling the

68355. The transformer cores operating at microwave frequency ranges are generally made up of

68356. In high frequency region, an amplifier behaves like a

68357. Class C operation finds application in

68358. In the circuit shown in the figure

68359. In a CE amplifier circuit the load resistance is open circuited. The output voltage will

68360. Emitter follower is in which of following configuration.

68361. Saturation region of a JFET is also known as

68362. Which junction transistor is preferred for high input and low output impedances?

68363. For operation of enhancement only N-channel MOSFET, value of gate voltage has to be

68364. Sweep voltage generators, sweep current generators, multivibrators and blocking oscillators can be combined as

68365. A generator with an internal resistance of 600 Ω drives an amplifier whose input resistance is 400 Ω. The generator's open circuit voltages is 1 mV; the amplifier develops 100mV across an 8kΩ load. The voltage multiplication is

68366. The ripple factor of a full wave rectifier is about 0.5

68367. The configuration of figure is a

68368. The voltage gains of an amplifier without feedback and with negative feedback respectively are 100 and 20. The percentage of negative feedback would be.

68369. In a CE amplifier circuit, the output voltage

68370. CMOS is widely used in

68371. Oscillation frequency in colpitt's oscillator is

68372. A JFET can operate on

68373. Which of the following is the point of reference JFET?

68374. A Darlington pair consist of

68375. The purpose of using negative feedback in a op-amps is to

68376. A transistor amplifier with 85% efficiency is expected to be

68377. In the case of the circuit shown in the figure Vio = 10 mV dc maximum, the maximum possible output offset voltage Voo caused by the input offset voltage Vio with respect to ground is

68378. The advantage of transistor over vacuum tube is

68379. Which of the following is necessary transistor action?

68380. An op-amp is fed from a signal source through resistance R1. If it is to work as sign changer, the feedback resistance Rf should be

68381. For a sinusoidal input, the circuit shown in the figure will act as a

68382. A multivibrator can be used as a

68383. A multivibrator generates

68384. The derating factor, for ambient temperature higher than specified, for a transistor is about

68385. Which of the following circuit can operate class AB for audio power output?

68386. Ebers Moll model is applicable to

68387. A FET

68388. For oscillations to starts, the loop gain A β of the oscillator must be initially

68389. Pick the Odd one out

68390. The circuit of figure is called

68391. If the changes in zener current in a voltage regulator circuit are too large, it can be corrected by using a

68392. MOS circuits as compared to bipolar circuits take

68393. Typical values of voltage gain for CE, CB and CC amplifiers are

68394. For a transistor if a dc = 0.98 and emitter current IE is 2 mA, then collector current will be

68395. In figure the potential of gate terminal is

68396. The gate-source voltage that reduces the drain current to approximately zero is called

68397. In a half wave voltage doubler circuit the input frequency is 50 Hz. The ripple frequency is

68398. Class A amplifiers are preferred when

68399. In figure the source resistance of current source IEE is infinite, then common mode gain is

68400. Which of the following circuit would be preferred for a 355 KHz IF amplifier?

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68351. In a practical oscillator, the magnitude of loop gain Aβ is kept slightly larger than unity and the amplitude of oscillations is limited by (adsbygoogle = window.adsbygoogle || []).push({});