MCQ in Modulation Part 8 – Answers

Below are the answers key for the Multiple Choice Questions in Modulation Part 8.

351. 112.5 kHz

352. Mixer

353. Approximately equal to the circuit resistance

354. Colpitts, Hartley, and Pierce

355. Through a tapped coil

356. Through a capacitive divider

357. Through a neutralizing capacitor

358. Colpitts

359. Mechanical vibration of a crystal by the application of a voltage

360. It doesn’t require an LC tank circuit

361. Colpitts

362. It is stable

363. Efficiency = (RF power out / dc power in) x 100%

364. 14.4 ohms

365. Approximately 12

366. The back and forth oscillation of electrons in an LC circuit

367. By neutralization

368. Frequency translation

369. Balanced modulator

370. Both a and c

371. 30.8 MHz

372. Nonlinear

373. Push-push

374. Frequency synthesizer

375. both A and B

376. Indirect

377. All of the above

378. The change of the crystal oscillator frequency by loading

379. Both a and b

380. All of the above

381. SSB

382. Buffer amplifier

383. Signal bias

384. Pulse

385. Cancelling the effect of internal device capacitance

386. Splatter

387. Class C

388. Minimum IC in the same stage

389. Carrier

390. Is tuned to a harmonic of the input signal

391. 15.288 kHz

392. 7.5 V

393. 4 MHz

394. 11 MHz

395. 8 MHz

396. 185 Hz

397. 6.25 W

398. 128 ohms

399. 56. 25 W

400. 15.625 ohms

Questions and Answers in Modulation Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQ in Communications Engineering per topic