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MCQ in Modulation Part 7 – Answers

MCQ in Modulation Part 7 | ECE Board Exam

Below are the answers key for the Multiple Choice Questions in Modulation Part 7.

301. DSB

302. PIN diode

303. D

304. Sidebands

305. 3

306. Demodulation

307. mixing process whereby information is imposed upon a carrier

308. A modulator that produces a DSBSC signal

309. A circuit that acts as a variable inductance or capacitance to produce FM signals

310. By using a balanced modulator followed by a filter

311. By modulating the plate voltage of a class C amplifier

312. N

313. Mechanical filter

314. 0.799

315. 30 kHz

316. 10450 watts

317. Period

318. Modulation index

319. MF

320. Independent sideband emission

321. The only way to produce an emission F3E signal is with reactance modulator on the oscillator

322. 50%

323. In terms of peak envelope power

324. FM/TV stereo

325. Baseband frequency

326. F3E

327. Type of information to be transmitted

328. 500 W

329. Foster-Seeley discriminator

330. 11 W

331. Indirect

332. Maximum frequency swing to the highest modulating frequency

333. 0.8246

334. 0.10 milliwatts

335. Mixer

336. 0.185 V

337. Voltage-controlled oscillator

338. Distortion

339. 825 V

340. 542 W

341. Balanced modulator

342. Envelope detector

343. The need for an AFC circuit

344. Frequency synthesizer

345. Indirect

346. FM and DSB AM

347. RF amplifier

348. 230 kHz

349. The inputs are coherent

350. 48 W

Questions and Answers in Modulation Series

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

MCQ in Modulation
PART 1: MCQ from Number 1 – 50                        Answer key: PART 1
PART 2: MCQ from Number 51 – 100                   Answer key: PART 2
PART 3: MCQ from Number 101 – 150                 Answer key: PART 3
PART 4: MCQ from Number 151 – 200                 Answer key: PART 4
PART 5: MCQ from Number 201 – 250                 Answer key: PART 5
PART 6: MCQ from Number 251 – 300                 Answer key: PART 6
PART 7: MCQ from Number 301 – 350                 Answer key: PART 7
PART 8: MCQ from Number 351 – 400                 Answer key: PART 8
PART 9: MCQ from Number 401 – 450                 Answer key: PART 9
PART 10: MCQ from Number 451 – 500                 Answer key: PART 10

Complete List of MCQ in Communications Engineering per topic

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