Basic Electronics MCQ Questions and Answers
Basic Electronics MCQ questions with answers cover fundamental topics like resistors, capacitors, diodes, and transistors. These aptitude questions and answers with explanations are highly useful for competitive exams such as GATE, DRDO, and ISRO. Students can practice aptitude test questions to build their understanding of basic electrical laws and circuit behavior. The aptitude questions with solutions PDF helps learners revise important formulas and key concepts effectively. Whether you’re preparing for electronics-based job placements or national-level exams, mastering these questions is essential for scoring high and clearing technical assessments confidently.
Basic Electronics MCQ
Showing 10 of
29 questions
1. A p-n junction is said to be forward biased, when
- the positive pole of the battery is joined to the p-semiconductor and negative pole to the n-semiconductor
- the positive pole of the battery is joined to the n-semiconductor and negative pole of the battery is joined to the p-semiconductor
- the positive pole of the battery is connected to n- semiconductor and p- semiconductor
- a mechanical force is applied in the forward direction
3. When N-type semiconductor is heated ?
- number of electrons increases while that of holes decreases
- number of holes increases while that of electrons decreases
- number of electrons and holes remain same
- number of electron and holes increases equally.
4. Radiowaves of constant amplitude can be generated with
- FET
- filter
- rectifier
- oscillator
5. In a common base amplifier the phase difference between the input signal voltage and the output voltage is ?
- 0
- pi/4
- pi/2
- p
6. When a triode is used as an amplifier the phase difference between the input signal voltage and the output is ?
- 0
- pi
- pi/2
- pi/4
7. The depletion layer in the P-N junction region is caused by?
- drift of holes
- diffusion of charge carriers
- migration of impurity ions
- drift of electrons
8. To use a transistor as an amplifier
- The emitter base junction is forward biased and the base collector junction is reversed biased
- no bias voltage is required
- both junction are forward biased
- both junctions are reversed biased
9. Which one of the following is the weakest kind of the bonding in solids
- ionic
- metallic
- Vander Walls
- covalent
10. For amplification by a triode, the signal to be amplified is given to
- the cathode
- the grid
- the glass-envelope
- the anode