Microwave Solid-state Devices MCQ
Microwave Solid-state Devices MCQ, Multiple Choice Questions on Microwave Solid-state Devices, Microwave Engineering MCQ, Electronics MCQ, Engineering MCQ,
Objective Questions on Microwave Tubes
OBJECTIVE-TYPE QUESTIONS
Q.1. If the phase difference between voltage and current in a device is 180°, such a device is called
- an inductor
- a capacitor
- a positive resistance device
- a negative resistance device
Answer: a negative resistance device
Q.2. Which of the following is a TED?
- GUNN diode
- TRAPATT
- IMPATT
- BARITT
Answer: GUNN diode
Q.3. Which of the following is a unipolar device?
- SCHOTTKY diode
- PN diode
- PIN diode
- Varactor diode
Answer: SCHOTTKY diode
Q.4. The natural frequency of a GUNN diode, having an active length of 2 micrometers and an electron drift velocity of 105 m/sec, is
- 10 GHz
- 20 GHz
- 50 GHz
- 1 GHz
Answer: 50 GHz
Q.5. The operating frequency of an IMPATT diode that has a drift length of 5 micrometers is
- 10 GHz
- 20 GHz
- 50 GHz
- 1 GHz
Answer: 20 GHz
Q.6. Which of the following diodes has a high impurity ion concentration?
- PN
- tunnel diode
- SCHOTTKY diode
- IMPATT diode
Answer: tunnel diode
Q.7. In a parametric amplifier, if the output frequency is the difference between signal frequency and pump frequency, it is called
- upconverter
- degenerate amplifier
- downconverter
- none of the above
Answer:
Q.8. Which of the following has a metal-semiconductor junction?
- crystal diode
- Schottky diode
- step-recovery diode
- crystal diode & Schottky diode
Answer: crystal diode & Schottky diode
Q.9. The semiconductor diode which can be used in switching circuits at microwave range is
- PIN Diode
- Varactor Diode
- Tunnel Diode
- Gunn Diode
Answer: PIN Diode
Q.10. Which one of the following is a transferred electron device?
- BARITT Diode
- IMPATT Diode
- Gunn Diode
- Step Recovery Diode
Answer: Gunn Diode
Q.11.