1

GATE ECE 2017 Set 2

MCQ (Single Correct Answer)

+1

-0.3

An npn bipolar junction transistor (BJT) is operating in the active region. If the reverse bias
across the base-collector junction is increased, then

2

GATE ECE 2017 Set 2

Numerical

+1

-0

Consider the circuit shown in the figure. Assume base-to-emitter voltage V

_{BE}=0.8 V and common base current gain $$\left(\alpha\right)$$ of the transistor is unity. The value of the collector-to–emitter voltage V_{CE}(in volt) is _______.Your input ____

3

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?

4

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 ____

Questions Asked from BJT and FET (Marks 1)

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