RRB JE 2019: Op- Amp Quiz 5

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Question 1

For oscillations to start in a circuit the phase shift around the loop is

• A90°
• B180°
• C270°
• D360°

Question 2

The circuit shown is

• AA low-pass filter
• BA high-pass filter
• CA comparator
• DAn all-pass filter

Question 3

An OP-AMP has a common mode gain of 0.01 and a differential mode gain of 10⁵. Its common mode rejection ratio would be

• A10^-7
• B10^-3
• C10³
• D10⁷

Question 4

An OP-AMP has a slew rate of 5 V/μs. The largest sine wave output voltage possible at a frequency of 1 MHz is

• A10 πV
• B5 V
• C
• D

Question 5

Statement (I): An ideal op-amp should have infinite bandwidth.
Statement(II): An ideal op amp should have infinite input resistance and zero output resistance.

• ABoth Statement (i) and Statement (ii) are individually true and Statement (ii) is the correct explanation of Statement (i).
• BBoth Statement (i) and Statement (ii) are individually true but Statement (ii) is not the correct explanation of Statement (i).
• CStatement (i) is true but Statement (ii) is false.
• DStatement (i) is false but Statement (ii) is true.

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