Question: A differential amplifier has + 100 mV applied to non inverting end and + 250 mV applied to inverting end. The output is 1.5 V. the gain of the amplifier is :
Answer:
MCQ: A differential amplifier has + 100 mV applied to non inverting end and + 250 mV applied to inverting end. The output is 1.5 V. the gain of the amplifier is :
Correct Answer:
A. 10
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Related Questions
- 1. A differential amplifier having CMRR 50,000 has a difference mode gain of 500. The common mode gain is :
- 2. A differential amplifier has a common mode gain of 0.02. it has + 200 mV signals applied to each of its inputs. The amplitude of output signal is :
- 3. The output from a transducer has a frequency of 50 Hz. It modulates (amplitude modulation) a carrier having a frequency of 1 kHz. The output wave shape contains frequencies which are:
- 4. The output from a transducer is a non sinusoidal wave having frequencies ω<sub>1, </sub>ω<sub>2, </sub>ω<sub>3, </sub>ω<sub>4. </sub>The carrier frequency is ω<sub>c.</sub> the frequency spectrum of output wave contains frequencies
- 5. A low pass filter has a time constant of τ . <em>its gain at a frequency </em><em>ω is,</em>
- 6. A high pass filter has a time constant of τ, its gain at a frequency ω is,
- 7. A input circuit of variable resistance transducer consists of a ballast resistance, in series with the transducer resistance R<sub>t</sub> . The resistance of the transducer for a particular input is kR<sub>i</sub>, where k is a constant. If the input circuit is supplied by an input voltage e<sub>i</sub>. The sensitivity of the transducer is
- 8. In a voltage sensitive Wheatstone, having each arm having a resistance R, the resistance of one of the arm is changed to R+∆R where ∆R≪R. the Wheatstone bridge is supplied with an input voltage of e<sub>i</sub>, the output voltage on account of unbalance is
- 9. The bridge sensitivity factor for a Blumlein bridge using two inductive transducers in push pull arrangement is,
- 10. In a Blumlein bridge using two capacitive transducers in push pull configuration, the bridge sensitivity factor above the resonance frequency for a tightly coupled bridge is ,
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