6)What is an operational amplifier?
A very high gain direct coupled amplifier with feedback. A high gain amplifier indirectly coupled without feedback. A low gain amplifier without feedback. None of the above.
7)In an ideal operational amplifier the output impedance should be zero. In practice it is in the range of:
Few hundred ohms to few kilo ohms. Few ohms to a few hundred ohms. Few kilo ohms to few mega ohms. Few milliohms to one ohm.
8)How can noise be reduced in an operational amplifier?
Shielding. Attenuation to grounding Use of low pass filters on incoming power leads. All of the above
9)The use of OPAMP is generally not preferred as:
Divider. Subtractor. Differentiator. Integrator
10) Feedback in an amplifier that:
Increases sensitivity and reduces gain Increases sensitivity as well as gain. Reduces sensitivity as well as gain. Reduces sensitivity and increases gain.
A very high gain direct coupled amplifier with feedback. A high gain amplifier indirectly coupled without feedback. A low gain amplifier without feedback. None of the above.
7)In an ideal operational amplifier the output impedance should be zero. In practice it is in the range of:
Few hundred ohms to few kilo ohms. Few ohms to a few hundred ohms. Few kilo ohms to few mega ohms. Few milliohms to one ohm.
8)How can noise be reduced in an operational amplifier?
Shielding. Attenuation to grounding Use of low pass filters on incoming power leads. All of the above
9)The use of OPAMP is generally not preferred as:
Divider. Subtractor. Differentiator. Integrator
10) Feedback in an amplifier that:
Increases sensitivity and reduces gain Increases sensitivity as well as gain. Reduces sensitivity as well as gain. Reduces sensitivity and increases gain.
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