PYQs Based Test - 10 : Analog Electronics

The circuit shown in the figure uses matched transistors with a thermal voltage V${}_T$ = 25 mV. The base currents of the transistors are negligible. The value of the resistance R in kΩ that is required to provide 1 μA bias current for the differential amplifier block shown is ___________. (Give the answer up to one decimal place.)

A circuit and the characteristics of the diode (D) in it are shown. The ratio of the minimum to the maximum small signal voltage gain $\frac{\partial V_{out}}{\partial V_{in}}$ is _______(rounded off to two decimal places).

The op-amp shown in the figure has a finite gain A = 1000 and an infinite input resistance. A step-voltage Vᵢ = 1mV is applied at the input at time t = 0 as shown. Assuming that the operational amplifier is not saturated, the time constant (in millisecond) of the output voltage $V_0$ is

Consider the circuit shown with an ideal OPAMP. The output voltage Vₒis __________V (rounded off to two decimal places).

Four strain gauges in a Wheatstone bridge configuration are connected to an instrumentation amplifier as shown in the figure. From the choices given below, the preferred value for the common mode rejection ratio (CMRR) of the amplifier, in dB, would be