Analog Circuits
JKSSB Sub-Inspector (Telecommunication) · Electronic Devices, Analog Circuits & Network Theory · 14 practice questions with answers and explanations: 3 Easy, 6 Medium, 5 Hard.
Sample questions
Sample Easy question 1
What is a 'non-inverting amplifier'?
- An amplifier where the output signal is in phase with the input signal
- An amplifier that always inverts the signal
- An amplifier that only works with DC
- An amplifier with no gain
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Answer: A. A non-inverting amplifier's output stays in phase with its input, unlike an inverting configuration.
Sample Medium question 2
What is an 'oscillator' circuit used for?
- Generating a repetitive, periodic waveform without an external input signal
- Only amplifying existing signals
- Rectifying AC to DC
- Storing binary data
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Answer: A. Oscillators generate a continuous periodic waveform, such as a sine or square wave, without an external oscillating input.
Sample Hard question 3
What does a 'low-pass filter' allow to pass through?
- Frequencies below a certain cutoff frequency
- Only high frequencies
- No frequencies at all
- Only DC signals with no AC
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Answer: A. A low-pass filter passes frequencies below its cutoff and attenuates higher frequencies.