Circuits and Resonance Questions and Answers
Circuits and Resonance questions with answers are a major topic in electronics aptitude tests and engineering exams such as GATE, DRDO, and campus placements. These aptitude questions and answers focus on AC/DC circuits, impedance, phase difference, and resonance conditions. Understanding how current and voltage behave at resonance is essential for electrical and electronics engineers. Practicing circuit analysis and resonance problems with detailed solutions improves both theoretical knowledge and practical application. Access aptitude questions with solutions PDF to prepare effectively for technical and placement tests.
Circuits and Resonance
Showing 10 of
50 questions
11. The gain of an inverting op-amp is given by:
- Rf/Rin
- -Rf/Rin
- 1 + Rf/Rin
- -1 - Rf/Rin
12. In a common emitter amplifier, the phase shift between input and output is:
- 0°
- 90°
- 180°
- 270°
13. What is the main function of a zener diode?
- Amplification
- Rectification
- Voltage regulation
- Oscillation
15. In a full-wave bridge rectifier, how many diodes conduct during each half cycle?
- 1
- 2
- 3
- 4
16. What is the typical value of β for a common transistor?
- 5-10
- 50-200
- 500-1000
- 1000-5000
18. In a series resonant circuit, at frequencies below resonance, the circuit behaves as:
- Capacitive
- Inductive
- Resistive
- Open circuit
19. What is the purpose of a bypass capacitor in amplifier circuits?
- DC blocking
- AC bypass
- Voltage doubling
- Current limiting