GATE 2022 Rapid Revision Quiz 6

For the circuit shown in the figure, the Thevenin equivalent voltage (in Volts) across the terminals a-b is

What is the threshold voltage of a n-channel MOSFET with metal-semiconductor work function potential difference of 50V and interface capacitance per unit area is 1.5 F/cm². The interface charge per unit area is 5 C/cm² and the depletion region charge per unit area is 10 C/cm². The Fermi potential is 15 V.

In the circuit shown in the figure, the BJT has a current gain (β) of 50. For an emitter-base voltage V_EB = 600 mV, the emitter-collector voltage V_EC (in Volts) is _____.

A boat can travel with a speed of 15 km/hr in still water. If the speed of stream is 7 km/hr,  then find the time taken by the boat to go 72 km in upstream direction?

For the circuit shown below

Assume transistors to be identical and V_T = 25 mV at room temperature, the output voltage V_o in mV is _____. (given I₁ = 10 mA I₂ = 2mA)

In a lossy conducting medium, the phase constant of an uniform plane wave is 1.4rad/m. Now, if for every 2m travelled by the plane wave, its magnitude is reduced by 60%, then determine the skin depth in meters. (Given phase constant at frequency f= 10⁸ Hz).

Consider two 8-point signal point constellations shown in figure below.

It is  desired to assign three data bits  to each point of the signal constellation such that the nearest (adjacent) points differ in only one bit position. This encoding scheme is possible for