RRB JE 2019: Op- Amp Quiz 2

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Question 1

Determine output voltage ‘V₀’ for below circuit whre V_in = Sin (100 t)

• A2 Sin (100t)
• BSin (100 t)
• CSin (200 t)
• D0.5 Sin (100 t)

Question 2

In the circuit shown in the above figure, the value of output V₀ is

• A+6V
• B-9V
• C-6V
• D+9V

Question 3

The output voltage V_o of the circuit shown in the figure below. (The input voltages are V₁=2.5 V and V₂=1 V) 

• A4.0 V
• B-4.0 V
• C-4.5 V
• D4.5 V

Question 4

The ideal op-amp has

• Ainfinite voltage gain and zero input impedance
• Binfinite voltage gain and infinite bandwidth
• Czero voltage gain and infinite CMRR
• Dzero output impedance and zero CMRR

Question 5

If an input impedance of op-amp is finite, then which one of the following statements related to virtual ground is correct ?

• AVirtual ground condition may exist.
• BVirtual ground condition cannot exist
• CIn case of op-amp, virtual ground condition always exists.
• DCannot make a valid declaration

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