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GATE 2019: Analog Electronics Quiz 6 (App update required to attempt this test)

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Question 1

Including a small resistance in the source (emitter) of a CS (CE) amplifier provides the designer with a tool to improve the performance, that is

Question 2

The two junctions of the BJT are forward or reverse biased to operate the BJT in:

Question 3

In a transistor amplifier, change of 0.025V in signal voltage causes the base current to change by 15 µA and collector current by 1.2 mA. If collector and load resistances are of 6kΩ and 12kΩ, determine input resistance in kΩ.

Question 4

In the figure shown below Q1 and Q2 have identical characteristics. VCE (sat) = 0.1V of transistor Q3. If VBE = 0.7V for Q1, Q2 and Q3 then Find the value of V1-V2 in Volts. (Assume ß to be very high)

Question 5

A shunt regulator utilizes a zener diode whose voltage is 5.1 V at a current of 50 mA and whose incremental resistance is 7. The diode is fed from a supply of 15V nominal voltage through a 200Ω resistor. What is the output voltage(in Volts) at no load?

Question 6

Given figure shows the voltage divider configuration of an E-MOSFET. Calculate the value of gate voltage VG and drain current ID if VGS=1V, Rs=2kΩ and R1=R2=10kΩ. Assume VDD=10V.
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Feb 7ESE & GATE EE