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
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50 questions
41. The early effect in transistors refers to:
- Thermal runaway
- Base width modulation
- Avalanche breakdown
- Zener breakdown
42. In a JFET, the drain current is controlled by:
- Drain voltage
- Gate voltage
- Source voltage
- Body voltage
43. What is pinch-off voltage in JFET?
- Breakdown voltage
- Cut-off voltage
- Saturation voltage
- Peak inverse voltage
44. The main advantage of CMOS technology is:
- High speed
- Low power
- High voltage
- Low cost
45. In an integrator circuit using op-amp, the feedback element is:
- Resistor
- Capacitor
- Inductor
- Diode
46. What is the function of a sample and hold circuit?
- Amplify signals
- Sample and hold voltage
- Generate clock
- Regulate power
48. In a PLL, the VCO generates frequency proportional to:
- Input frequency
- Control voltage
- Reference voltage
- Supply voltage
49. What is the main application of a monostable multivibrator?
- Clock generation
- Pulse stretching
- Frequency division
- Voltage regulation
50. The slew rate of an op-amp indicates:
- Gain
- Bandwidth
- Output swing
- Speed limitation