Electronics

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Q. What is the primary use of a FET in analog circuits?
  • A. Switching
  • B. Signal amplification
  • C. Rectification
  • D. Voltage regulation
Q. What is the primary use of a phototransducer?
  • A. To convert light into electrical signals
  • B. To convert sound into electrical signals
  • C. To convert heat into electrical signals
  • D. To convert mechanical motion into electrical signals
Q. What is the primary use of a Schmitt trigger?
  • A. To amplify signals
  • B. To convert analog signals to digital
  • C. To provide hysteresis in signal processing
  • D. To rectify AC signals
Q. What is the primary use of a timer in electronic circuits?
  • A. To amplify signals
  • B. To measure resistance
  • C. To generate time delays
  • D. To rectify AC signals
Q. What is the primary use of a Zener diode in AC circuits?
  • A. Rectification
  • B. Voltage regulation
  • C. Signal amplification
  • D. Current limiting
Q. What is the primary use of an active low-pass filter using an op-amp?
  • A. To amplify high-frequency signals
  • B. To allow low-frequency signals to pass while attenuating high frequencies
  • C. To rectify AC signals
  • D. To provide isolation between circuits
Q. What is the primary use of an op-amp as a peak detector?
  • A. To measure average voltage
  • B. To store the peak value of an input signal
  • C. To amplify low-frequency signals
  • D. To filter out noise
Q. What is the primary use of an operational amplifier (op-amp) in AC circuits?
  • A. To rectify AC to DC
  • B. To amplify AC signals
  • C. To filter DC signals
  • D. To convert AC to digital signals
Q. What is the primary use of an operational amplifier?
  • A. To rectify AC signals
  • B. To amplify voltage signals
  • C. To switch electronic devices
  • D. To store data
Q. What is the primary use of BJTs in analog circuits?
  • A. Switching
  • B. Signal amplification
  • C. Voltage regulation
  • D. Oscillation
Q. What is the primary use of capacitors in rectifier circuits?
  • A. To increase voltage
  • B. To filter out noise
  • C. To store energy
  • D. To convert AC to DC
Q. What is the primary winding of a transformer connected to?
  • A. A load
  • B. A power source
  • C. A capacitor
  • D. A resistor
Q. What is the principle of operation of a transformer?
  • A. Electromagnetic induction
  • B. Capacitance
  • C. Resistance heating
  • D. Thermal conduction
Q. What is the purpose of a differential amplifier?
  • A. To amplify a single-ended signal
  • B. To amplify the difference between two input signals
  • C. To rectify AC signals
  • D. To provide isolation between circuits
Q. What is the purpose of a rectifier in an electronic circuit?
  • A. To amplify signals
  • B. To convert AC to DC
  • C. To filter noise
  • D. To store energy
Q. What is the purpose of a Schmitt trigger?
  • A. To amplify signals
  • B. To convert analog signals to digital
  • C. To provide hysteresis in signal processing
  • D. To rectify AC signals
Q. What is the purpose of an operational amplifier (op-amp) in AC applications?
  • A. To convert AC to DC
  • B. To amplify AC signals
  • C. To rectify AC signals
  • D. To filter AC signals
Q. What is the purpose of an operational amplifier (op-amp) in AC circuits?
  • A. To convert AC to DC
  • B. To amplify AC signals
  • C. To filter out noise
  • D. To rectify AC signals
Q. What is the purpose of an operational amplifier (op-amp) in analog circuits?
  • A. To convert digital signals to analog
  • B. To amplify voltage signals
  • C. To rectify AC signals
  • D. To store charge
Q. What is the purpose of an operational amplifier in a circuit?
  • A. To act as a voltage follower
  • B. To amplify voltage differences
  • C. To filter signals
  • D. All of the above
Q. What is the purpose of an operational amplifier in an RC circuit?
  • A. To rectify the signal
  • B. To amplify the signal
  • C. To filter the signal
  • D. To switch the signal
Q. What is the purpose of an operational amplifier?
  • A. To rectify AC signals
  • B. To amplify voltage signals
  • C. To switch electronic signals
  • D. To store charge
Q. What is the purpose of feedback in op-amp circuits?
  • A. To increase gain
  • B. To stabilize the output
  • C. To reduce power consumption
  • D. To isolate the input
Q. What is the purpose of the offset null terminals in an operational amplifier?
  • A. To adjust the gain
  • B. To eliminate noise
  • C. To nullify the output voltage when inputs are shorted
  • D. To increase bandwidth
Q. What is the relationship between primary and secondary voltage in a transformer?
  • A. V1/V2 = N1/N2
  • B. V1/V2 = N2/N1
  • C. V1 + V2 = N1 + N2
  • D. V1 - V2 = N1 - N2
Q. What is the resonance frequency in an RLC circuit?
  • A. The frequency at which impedance is minimized
  • B. The frequency at which current is maximized
  • C. The frequency at which energy is stored
  • D. The frequency at which voltage is minimized
Q. What is the response of an RC circuit to a step input?
  • A. Exponential decay
  • B. Linear decay
  • C. Exponential rise
  • D. Sinusoidal response
Q. What is the response of an underdamped second-order system to a step input?
  • A. Exponential decay
  • B. Oscillatory decay
  • C. Constant value
  • D. Linear increase
Q. What is the role of a bypass capacitor in a series circuit with an op-amp?
  • A. To increase gain
  • B. To filter out noise
  • C. To decrease output impedance
  • D. To stabilize voltage
Q. What is the role of a coupling capacitor in amplifier circuits?
  • A. To block DC and allow AC signals
  • B. To amplify the signal
  • C. To provide feedback
  • D. To increase bandwidth
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