1

GATE ECE 2017 Set 1

MCQ (Single Correct Answer)

+1

-0.3

For a narrow base PNP BJT, the excess minority carrier concentration ($$\bigtriangleup n_E$$ for emitter,
$$\bigtriangleup p_B$$ for base, $$\bigtriangleup n_E$$ for collector) normalized to equilibrium minority carrier concentration
($$\bigtriangleup n_{E0}$$ for emitter, $$\bigtriangleup p_{B0}$$ for base, $$\bigtriangleup n_{C0}$$ for collector) in the quasi-neutral emitter, base and collector
regions are shown below. Which one of the following biasing modes is the transistor operating in?

2

GATE ECE 2016 Set 3

Numerical

+1

-0

The figure shows the I-V characteristics of a solar cell illuminated uniformly with solar light of
power 100 mW/cm

^{2}. The solar cell has an area of 3 cm^{2}and a fill factor of 0.7. The maximum efficiency (in %) of the device is __________.Your input ____

3

GATE ECE 2016 Set 2

MCQ (Single Correct Answer)

+1

-0.3

The Ebers-Moll model of a BJT is valid

4

GATE ECE 2015 Set 3

Numerical

+1

-0

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 ______.Your input ____

Questions Asked from BJT and FET (Marks 1)

Number in Brackets after Paper Indicates No. of Questions

GATE ECE Subjects

Network Theory

Control Systems

Electronic Devices and VLSI

Analog Circuits

Digital Circuits

Microprocessors

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

Communications

Electromagnetics

General Aptitude