Mcqs

Electronic Devices & Circuits Mcqs

Our 1000+ Electronic Devices and Circuits MCQs (Multiple Choice Questions and Answers) focus on all areas of Electronic Devices and Circuits covering 100+ topics. These topics are chosen from a collection of the most authoritative and best reference books on Electronic Devices and Circuits. One should spend 1 hour daily practicing these MCQs for 2-3 months to learn and assimilate Electronic Devices and Circuits subject comprehensively. This way of systematic learning will prepare anyone easily for Electronic Devices and Circuits exams, contests, online tests, quizzes, MCQ-tests, viva-voce, interviews, and certifications.

 

Electronic Devices and Circuits Multiple Choice Questions Highlights

  • 1000+ Multiple Choice Questions & Answers (MCQs) in Electronic Devices and Circuits with a detailed explanation of every question.
  • These MCQs cover theoretical concepts, true-false(T/F) statements, fill-in-the-blanks, and match the following style statements.
  • These MCQs also cover numerical as well as diagram-oriented MCQs.
  • These MCQs are organized chapterwise and each Chapter is further organized topicwise.
  • Every MCQ set focuses on a specific topic of a given Chapter in Electronic Devices and Circuits Subject.

 

Who should Practice Electronic Devices and Circuits MCQs?

  • Students who are preparing for college tests and exams such as mid-term tests and semester tests on Electronic Devices and Circuits.
  • Students who are preparing for Online/Offline Tests/Contests in Electronic Devices and Circuits.
  • Students who wish to sharpen their knowledge of Electronic Devices and Circuits Subject.
  • Anyone preparing for Aptitude test in Electronic Devices and Circuits.
  • Anyone preparing for interviews (campus/off-campus interviews, walk-in interviews, and company interviews).
  • Anyone preparing for entrance examinations and other competitive examinations.
  • All - Experienced, Freshers and College / School Students.
Latest Popular
Q:

What is the minimum frequency at which a crystal will oscillate?

A) fundamental B) seventh harmonic
C) second harmonic D) third harmonic
 
Answer & Explanation Answer: A) fundamental

Explanation: The physical size of the quartz crystal affects the final or fundamental frequency of oscillations. The fundamental frequency is generally called the crystals “characteristic frequency”. The crystals characteristic or characteristic frequency is inversely proportional to its physical thickness between the two metalized surfaces.

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Category: Electronics & Electrical MCQs
Sub Category: Electronic Devices & Circuits Mcqs

73
Q:

For a phase-shift oscillator, the gain of the amplifier stage must be greater than ________

A) 19 B) 30
C) 29 D) 1
 
Answer & Explanation Answer: C) 29

Explanation: Since the resistor-capacitor combination in the RC Oscillator circuit also acts as an attenuator producing an attenuation of -1/29th ( Vo/Vi = ? ) per stage, the gain of the amplifier must be sufficient to overcome the circuit losses.
Therefore, in our three stage RC network above the amplifier gain must be greater than 29.

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Category: Electronics & Electrical MCQs
Sub Category: Electronic Devices & Circuits Mcqs

48
Q:

An oscillator requires an input voltage of high amplitude.

A) True B) False
 
Answer & Explanation Answer: B) False

Explanation: An oscillator circuit does not require an input voltage, an oscillator can be designed without giving an input signal.

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Category: Electronics & Electrical MCQs
Sub Category: Electronic Devices & Circuits Mcqs

37
Q:

What is the average value of saturation factor in a practical circuit?

A) 1 B) 0
C) 2 D) 3
 
Answer & Explanation Answer: A) 1

Explanation: The average value of saturation factor is equal to loop gain of the particular circuit, usually it will be nearly equal to 1.

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Category: Electronics & Electrical MCQs
Sub Category: Electronic Devices & Circuits Mcqs

46
Q:

Barkhausen criteria states phase of loop gain must be 0 for a self sustaining oscillator.

A) True B) False
 
Answer & Explanation Answer: A) True

Explanation: For an oscillator circuit, the phase of loop gain must be equal to zero or integral multiple of 2n?.

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Category: Electronics & Electrical MCQs
Sub Category: Electronic Devices & Circuits Mcqs

47
Q:

Which of the following expression depicts Barkhausen criteria?

A) A? = 1 B) A? = 0
C) A? < 1 < A? D) A? < 1
 
Answer & Explanation Answer: A) A? = 1

Explanation: Barkhausen criteria states that loop gain of the closed loop circuit must be equal to one in order to repeat the generation.

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Category: Electronics & Electrical MCQs
Sub Category: Electronic Devices & Circuits Mcqs

103
Q:

For practical oscillators, which law has to be obeyed?

A) Faraday law B) Hertz law
C) Fleming law D) Barkhausen law
 
Answer & Explanation Answer: D) Barkhausen law

Explanation: For an oscillator circuit, it has to obey the Barkhausen criteria, otherwise the output f the oscillator will tend to zero as the time advances.

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Category: Electronics & Electrical MCQs
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55
Q:

For an oscillator, input voltage is 5V, loop gain is 2, find output voltage?

A) 10 B) 20
C) 5 D) 15
 
Answer & Explanation Answer: A) 10

Explanation: For an oscillator, the output voltage is the product of loop gain and input voltage, hence output will be twice the input, that is 5*2 =10V.

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Category: Electronics & Electrical MCQs
Sub Category: Electronic Devices & Circuits Mcqs

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