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Electronic Devices And Circuits MCQ Questions & Answers | ECE

Learn Electronic Devices And Circuits MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Electronic Devices And Circuits MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students. Page-1 section-2

Each section contains 100 MCQs on Electronic Devices and Circuits .
1
Match List-I with List-II and select the correct answer using the options given below:
List-I (Regions of bipolar transistor in monolithic IC) List-II (Physical properties)
a. Emitter 1. Moderate resistivity
b. Base 2. Very high resistivity
c. Collector 3. Large size
d. Substrate 4. Very high conductivity
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Answer & Solution
Answer: Option C
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2
A LED is emitting a mean wavelength of λ = 0.90 µm and its spectral half-width ∆λ = 18 nm. What is its relative spectral width?
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Answer & Solution
Answer: Option A
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3
Solid state MASER is an amplifier of type
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Answer & Solution
Answer: Option A
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4
In a MOSFET gate, voltage controls:
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Answer & Solution
Answer: Option A
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5
A combination of two diodes connected in parallel when compared to a single diode can withstand
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Answer & Solution
Answer: Option B
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6
The drain-source voltage at which drain current becomes nearly constant, is called
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Answer & Solution
Answer: Option D
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7
The circuit with a fixed emitter current is called
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Answer & Solution
Answer: Option B
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8
In which of the following materials does conduction happen due to thermal excitation or crystal defects?
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Answer & Solution
Answer: Option B
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9
The diffusion process in an IC fabrication is done by:
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Answer & Solution
Answer: Option A
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10
Which of the following materials is used in light-emitting diodes?
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Answer & Solution
Answer: Option B
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