Discussion
Home ‣ Electronics and Communication Engineering ‣ Materials and Components See What Others Are Saying!
- Question
An electron (charge -e) is rotating in a circular orbit of radius R, around a proton with charge +e at a constant angular velocity ?. The orbital magnetic dipole moment is
Options- A. 0.5 e? R2
- B. e? R2
- C. 2 e? R2
- D. 0.5 e? R3
- Correct Answer
- 0.5 e? R2
- 1. Which mode is called dominant mode in rectangular wave guide?
Options- A. TE01
- B. TE11
- C. TE10
- D. TE20 Discuss
- 2. A 3 phase fully controlled converter is a
Options- A. 3 pulse converter
- B. 6 pulse converter
- C. 2 pulse converter
- D. 12 pulse converter Discuss
- 3. In a single phase half wave converter feeding resistive load and full wave converter (M - 2 connection) feeding a resistive load the circuit conditions are similar. The firing angle is a. Then the waveshapes of voltages across thyristors
Options- A. are similar
- B. are not similar
- C. may be similar or dissimilar
- D. are similar only for some values of a Discuss
- 4. Some types of traps used in video IF amplifier of colour TV are
Options- A. shunt traps
- B. series traps
- C. absorption traps
- D. all of the above Discuss
- 5. Which of the following devices exhibit negative resistance characteristics?
Options- A. UJT
- B. PUT
- C. Both UJT and PUT
- D. UJT, PUT and SBS Discuss
- 6. In molecules of ionic crystals, orientation polarization is zero.
Options- A. True
- B. False Discuss
- 7. Assertion (A): Magnetism can be explained by the theory of magnetic domains.
Reason (R): The existence of magnetic domains is evident from the Bitter powder patterns.
Options- A. Both A and R are true and R is correct explanation of A
- B. Both A and R are true but R is not correct explanation of A
- C. A is true but R is false
- D. A is false but R is true Discuss
- 8. Interference generated by electrical equipment and automobile ignition systems when observed closed to earth is
Options- A. horizontally polarized
- B. vertically polarized
- C. polarized both horizontally
- D. not polarized Discuss
- 9. Frequency range for satellite communication is
Options- A. 1 kHz to 100 kHz
- B. 100 kHz to 10 MHz
- C. 10 MHz to 100 MHz
- D. 1 GHz to 30 GHz Discuss
- 10. To prevent a DC return between source and load, it is necessary to use
Options- A. resistor between source and load
- B. inductor between source and load
- C. capacitor between source and load
- D. either (a) or (b) Discuss
More questions
Correct Answer: TE10
Correct Answer: 6 pulse converter
Correct Answer: are similar
Correct Answer: all of the above
Explanation:
All these are used.
Correct Answer: Both UJT and PUT
Correct Answer: True
Correct Answer: Both A and R are true but R is not correct explanation of A
Correct Answer: vertically polarized
Correct Answer: 1 GHz to 30 GHz
Correct Answer: capacitor between source and load
Explanation:
Capacitor offers infinite impedance to DC.
Comments
There are no comments.More in Electronics and Communication Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.