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GATE EC 2022: Analog Quiz 4 (App update required to attempt this test)

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Question 1

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 2

For the transistor biasing shown below, the value of the stability factor S is ________. Given β of Transistor is 50.

Question 3

For the DC analysis of the Common-Emitter amplifier shown, neglect the base current and assume that the emitter and collector current are equal. Given that VT =25mV, VBE =0.7V, and the BJT output resistance r0 is practically infinite. Under these conditions, the Midband voltage gain magnitude.
Ac = |V0/Vi|V/V, is _____
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Question 4

Two identical transistors are cascaded as follows with β=100. The overall voltage gain would be

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Question 5

Consider the N – MOS transistor baised as shown in the figure given below. The MOSFET parameters are KN = 1mA/V2 VT = 1.5V and λ = o. The transistor is used as an amplifier, if input signal is Vin = 5 sin(wt) mV, then output voltage Vo will be

Question 6

For the given circuit, if the resistance R2 is doubled, what is its effect on the current IC
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May 26ESE & GATE EC

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V V Satya Narayana MadasuV V Satya Narayana MadasuMember since Sep 2020
Gate Qualified in 2018,2019,2020,2021| ISRO Exam qualified| AIR -672|Completed M.Tech in VLSI Design
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