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ESE EC 2018 Achiever Study Plan: Analog Circuits Quiz 3
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Question 1
Statement (I): An ideal Op-Amp when used to make an inverting amplifier, has both input terminals at the same potential.
Statement (II): CMRR of the Op-Amp is low.
Statement (II): CMRR of the Op-Amp is low.
Question 2
The differential gain of op-amp is 4000 and value of CMRR is 150. Its output voltage, when the two input voltage are 200μV and 160μV respectively will be.
Question 3
In an amplifier the power output is 2 W at 5 kHz, and 0.5 W at 50 Hz. If the input power is constant at 10 mW, what is the variation (approximate) of power gain in dB at two frequencies? (log102=0.30)
Question 4
Consider the following statements.
Tuned amplifiers.
1) are wide band amplifiers.
2) are used in radio transmitters and receivers.
3) performance is determined by Q of the circuit.
Which of the statements given above are correct?
Tuned amplifiers.
1) are wide band amplifiers.
2) are used in radio transmitters and receivers.
3) performance is determined by Q of the circuit.
Which of the statements given above are correct?
Question 5
In an RC coupled transistor amplifier
1) Low-frequency response is determined by coupling capacitor.
2) High-frequency response is determined by junction
3) Mid- frequency response is determined by both coupling and junction capacitances
1) Low-frequency response is determined by coupling capacitor.
2) High-frequency response is determined by junction
3) Mid- frequency response is determined by both coupling and junction capacitances
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Feb 6ESE & GATE EC
