List of top Instrumentation Engineering Questions

The input impedance of an ideal op-amp is
Which feedback configuration is commonly used for voltage amplifiers?
An amplifier has an open-loop gain of \(100\) and feedback factor of \(0.05\). The closed-loop gain is approximately
In the saturation region of a MOSFET, the drain current is primarily controlled by
A full-wave rectifier has a peak voltage of \(100\,\text{V}\). The average output voltage is
The mid-band gain of an amplifier is measured when
At high frequencies, a transistor model must include
A CE amplifier has \(h_{fe}=100\) and load resistance \(R_L=2\,\text{k}\Omega\). The approximate low-frequency current gain is
A U-tube manometer uses mercury \((\rho = 13,600\ \mathrm{kg/m^3})\). If the level difference is \(10\ \mathrm{cm}\), then the pressure difference is approximately
Force measurement using strain gauges is based on the principle of
A JFET has \(I_{DSS}=10\,\text{mA}\) and pinch-off voltage \(V_P=-4\,\text{V}\). If \(V_{GS}=-3\,\text{V}\), find the value of \(I_D\)?
An orifice meter is installed in a pipe of diameter \(20\,\text{cm}\). If the discharge coefficient is assumed constant, the flow rate is proportional to
A silicon diode has a forward voltage drop of \(0.7\ \mathrm{V}\). If it is connected in series with a \(1\,\mathrm{k}\Omega\) resistor to a \(5\ \mathrm{V}\) supply, then the forward current is
A BJT has \(\beta=100\). If the base current is \(40\,\mu\mathrm{A}\), then the collector current is
A synchro is mainly used to measure
An LVDT produces an output of \(5\,\mathrm{mV/mm}\) sensitivity. For an excitation of \(10\,\mathrm{V}\) and displacement of \(2\,\mathrm{mm}\), the output voltage is
Piezoelectric transducers are best suited for measurement of
The main function of an instrumentation amplifier is to
Which signal conditioning circuit is used with piezoelectric transducers?
A rotary encoder has \(360\) pulses per revolution. The angular resolution is
The principle of McLeod Gauge is the compression of a sample of a low pressure gas to a pressure sufficiently high to read with a
An RC high-pass filter has \(R=10\,\text{k}\Omega\) and \(C=0.01\,\mu\text{F}\). The cut-off frequency is
Semiconductor strain gauges typically have much higher gauge factors than metallic strain gauges, primarily due to
A DC motor has an input power of \(5\,\text{kW}\) and total losses of \(1\,\text{kW}\). The efficiency of the motor is
Which of the following is a constant loss in an electric machine?