Below are the answers key for the Multiple Choice Questions in Microwave Communications Part 11.

501. Directional coupler

502. ruby

503. LASER

504. Slightly

505. Magnetic field

506. TWT

507. Radar

508. Reactance

509. Filter circuit

510. 8

511. Frequency pushing

512. Cut-off frequency

513. TM

514. Attenuator

515. 2.94 GHz

516. 6.83 cm, 3.34 cm, 420 ῼ

517. 6 cm, 166 Mm/sec,543 Mn/sec

518. 0.00025

519. 10,000 watts

520. Gunn diode

521. Tunnel

522. PIN diode

523. Point contact diode

524. ESBAR

525. Backward diode

526. Capacitance

527. Step recovery

528. CFA

529. Attenuator

530. Si BJT

531. Schottky Barrier Gate

532. BWO

533. TWT and Klystron

534. EIA

535. Quartz crystal

536. Single frequency

537. Is an oscillator

538. Stripline

539. TWT

540. BWO

541. CFA

542. Prevent oscillation

543. Provide attenuation

544. Prevent mode jumping

545. Are less bulky

546. The characteristic impedance of the guide becomes infinite

547. Are more likely to radiate

548. E-plane T

549. Suitable for use as a microwave switch

550. Rectangular waveguide

#### Questions and Answers in Microwave Communications and Principles Series

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

**MCQ in Microwave Communications**

**MCQ from Number 1 – 50**Answer key:

**PART 1**

**MCQ from Number 51 – 100**Answer key:

**PART 2**

**MCQ from Number 101 – 150**Answer key:

**PART 3**

**MCQ from Number 151 – 200**Answer key:

**PART 4**

**MCQ from Number 201 – 250**Answer key:

**PART 5**

**MCQ from Number 251 – 300**Answer key:

**PART 6**

**MCQ from Number 301 – 350**Answer key:

**PART 7**

**MCQ from Number 351 – 400**Answer key:

**PART 8**

**MCQs from Number 401 – 450**Answer key:

**PART 9**

**MCQs from Number 451 – 500**Answer key:

**PART 10**

### Complete List of MCQ in Communications Engineering per topic

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