T F 1 + rf/ri is the voltage gain for an inverting operational amplifier T F A p
ID: 1996426 • Letter: T
Question
T F 1 + rf/ri is the voltage gain for an inverting operational amplifier T F A potentiometer can be used to measure liquid levels with levers and gears T F Because of the low input impedance of the op-amp it is ideal for bridge circuits T F Because the bridge is the best transducer it does not require a compensation line T F Thermostats should be operated in a controlled temperature environment T F Cadmium Sulfide photo resistors make excellent linear light detectors T F If # 26 is true, then the op-amp can't be used for open loop comparisons T F infra-red radiation is above normal human vision T F Light intensity increases at square of the distance T F Metals have a tendency to increase their resistance with decreasing temperature T F Photon energy is both wave and quanta radiation T F Shock results in both positive and negative damping T F Tensile stress is an elongation stress T F The capacitor is a good vibration sensor T F The compensation strain gauge should be aligned orthogonal to the primary gauge T F The dynodes of the PM tube require progressive exceeding voltages to operate T F The Hall device is a good magnetic field sensor T F The J type thermocouple is made up of Copper Constantan T F The LASER for general purpose ranging, communications & alignment is the silicon type T F The LVDT has 3 inductor windings T F The LVDT is a linear voltage differential transformer T F The most sensitive direction of a strain gauge is on its narrow axis T F The natural frequency for crystals for vibration testing is less than 7 kHz T F The natural frequency of a variable reluctance accelerometer is typically 0 to 220 Hz. T F The op-amp can be used to integrate and condition noisy signals T F The op-amp is a feedback amplifier T F The operational amplifier (op-amp) is a three terminal deviceExplanation / Answer
1)
False.
Inverting amplifier gain is -rf/ri.
1+rf/ri is the non inverting amplifier gain.
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