1

GATE ECE 2007

MCQ (Single Correct Answer)

+2

-0.6

The DC current gain ($$\beta$$) of a BJT is 50. Assuming that the emitter injection
efficiency is 0.995, the base transport factor is:

2

GATE ECE 1999

MCQ (Single Correct Answer)

+2

-0.6

An n-channel JEFT has I

_{DSS}= 2 mA and V_{p}= −4 V. It's transconductance g_{m}(in mA/V) for an applied gate-to-source voltage V_{GS}of –2V is:3

GATE ECE 1992

MCQ (Single Correct Answer)

+2

-0.6

An n-channel JFET has a pinch-off voltage V

_{P}= -5 V, V_{DS}(max) = 20 V and g_{m}= 2 mA/V. The minimum ‘ON’ resistance is achieved in the JEFT for4

GATE ECE 1992

Fill in the Blanks

+2

-0

In a transistor having finite B, the forward bias across the base emitter junction
is kept constant and the reverse bias across the collector base junction is
increased. Neglecting the leakage across the collector base junction and the
depletion region generating current, the base current will __________.
(increase/decrease/remain constant).

Questions Asked from BJT and FET (Marks 2)

Number in Brackets after Paper Indicates No. of Questions

GATE ECE Subjects

Signals and Systems

Representation of Continuous Time Signal Fourier Series Fourier Transform Continuous Time Signal Laplace Transform Discrete Time Signal Fourier Series Fourier Transform Discrete Fourier Transform and Fast Fourier Transform Discrete Time Signal Z Transform Continuous Time Linear Invariant System Discrete Time Linear Time Invariant Systems Transmission of Signal Through Continuous Time LTI Systems Sampling Transmission of Signal Through Discrete Time Lti Systems Miscellaneous

Network Theory

Control Systems

Digital Circuits

General Aptitude

Electronic Devices and VLSI

Analog Circuits

Engineering Mathematics

Microprocessors

Communications

Electromagnetics