A. 23dB
B. 25dB
C. 46dB
D. 50dB
Related Mcqs:
- A differential amplifier has a differential gain of 20,000. CMMR=80dB. The common mode gain is given by_______________?
A. 2
B. 1
C. 1/2
D. 0 - For an op-amp having differential gain Av and common-mode gain Ac the CMRR is given by___________?
A. Av + Ac
B. Av / Ac
C. 1 + Av / AC.
D. Ac / Av - A 741-Type OP-AMP has a gain-bandwith product of 1MHz. A non-inverting amplifier using this opamp & having a voltage gain of 20db will exhibit -3db bandwidth of______________?
A. 50KHz
B. 100KHz
C. 1000/17KHz
D. 1000/7.07KHz - An amplifier using an opamp with slew rate SR=1v/sec has a gain of 40db.If this amplifier has to faithfully amplify sinusoidal signals from dc to 20KHz without introducing any slew-rate induced distortion, then the input signal level exceed_____________?
A. 795mV
B. 395mV
C. 795mV
D. 39.5mV - The closed-loop voltage gain of an inverting amplifier equal to______________?
A. The ratio of the input resistance to feedback resistance
B. The open-loop voltage gain
C. The feedback resistance divided by the input resistance
D. The input resistance - A differential amplifier is invariably used in the i/p stage of all op-amps. This is done basically to provide the op-amps with a very high______________?
A. CMMR
B. Bandwidth
C. Slew rate
D. Open-loop gain - Differential amplifiers are used in______________?
A. Instrumentation amplifiers
B. Voltage followers
C. Voltage regulators
D. Buffers - Which of the following amplifier is used in a digital to analog converter?
A. Non inverter
B. Voltage follower
C. Summer
D. Difference amplifier - A non inverting closed loop op amp circuit generally has a gain factor______________?
A. Less than one
B. Greater than one
C. Of zero
D. Equal to one - The output voltage Vo of the above circuit is____________?
A. -6V
B. -5V
C. -1.2V
D. -0.2V
