1 ) Op - Amp can amplify ___________ .
A ) AC Signals ,
B ) DC Signals ,
C ) Both of above ,
D ) None of above ,
Correct Answer : - C ) Both of above ,
2 ) The virtual ground of an Op_amp means ______________ ,
A ) Terminal is grounded together ,
B ) Terminal is not physically grounded but at zero voltage ,
C ) Both of above ,
D ) None of above ,
Correct Answer : - B ) Terminal is not physically grounded but at zero voltage ,
3 ) If R1 = R2 = RF and V1 = V2 = 5V , Then Vout is ______________ ,
A ) 5V ,
B ) -5V ,
C ) 10V ,
D ) -10V ,
Correct Answer : - D ) -10V ,
4 ) If R1 = R2 = 0.5 RF , then Vout will be ___________ of the sum of the inputs .
A ) Half ,
B ) Equal ,
C ) Two Times ,
D ) Four Times ,
Correct Answer : - C ) Two Times ,
5 ) The Circuit shown behave as a _________________ .
A ) Low Pass Filter ,
B ) Band Pass Filter ,
C ) High pass Filter ,
D ) Band stop Filter ,
Correct Answer : - C ) High pass Filter ,
6 ) Voltage gain of an ideal Op-Amp is __________________ .
A ) Finite ,
B ) Infinite ,
C ) None of above ,
Correct Answer : - B ) Infinite ,
7 ) If R1 = R2 = R , V1 = 10V , V2 = 20V and Vout = 90 , then the ratio of RF to R is ___________ .
A ) One .
B ) Two .
C ) Three .
D ) Four .
Correct Answer : - C ) Three .
8 ) Op - amp Integrator uses _____________ .
A ) Capacitor as feedback element ,
B ) Inductor as feedback element ,
C ) Resistor as a feedback element ,
D ) None of above ,
Correct Answer : - A ) Capacitor as feedback element ,
9 ) The Circuit Shown behave as a _________________ ,
A ) Low Pass Filter ,
B ) Band Pass Filter ,
C ) Highpass Filter ,
D ) Bandstop Filter ,
Correct Answer : - A ) Low Pass Filter ,
10 ) Which is not the ideal characteristic of an op - amp ?
A ) Input Resistance --> 0 ,
B ) Output impedance --> 0 ,
C ) Bandwidth --> ∞ ,
D ) Open loop voltage gain -->∞ ,
Correct Answer : - A ) Input Resistance --> 0 ,
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