The aim to provide MCQs of Basic Electronics questions test with answer key in pdf format for the students of electronics technology. We are providing you the total 50 multiple choice questions. The time allowed for the basic electronics mcqs online test is 30 minutes only. It is humbly request to please don’t cheat / imitate during quiz. The passing marks is 50 marks out of 100.
I hope the learning process always starts when you know about your weakness. If you will read all the electronics mcqs of my website then i hope in the future you will definitely achieve the big success in your life. As we know, the teachers, students and technicians always required the preparation of basic electronics for examinations or test/interview for job/promotion. You must be humble in life whenever you got any huge success because Allah always likes the humble persons.
Objective Questions of Basic Electronics ( MCQs Test)
Time Allowed: 30 Minutes Total Marks: 100
Passing Marks: 50
*Select the correct answer and write down on the blank white sheet then download the PDF file of electronics mcqs. All the students must observe the rules which will decide how skilled you are in Electronics technology. Each Question has 2 marks.
Q1. In the Vacuum tube, electrons are emitted by ___________________. .
- cathode
- anode
- grid
- plate
Answer:
Q2. Nucleus is made of electrons and protons. True / False
Answer:
Q3. The number of free electrons are more in ___________.
- resistors
- conductors
- semi-conductors
- insulators
Answer:
Q4. The concept of electricity means the flow of free electrons from the conductors. True / False
Answer:
Q5. What is charge on Atom ?
- negative
- positive
- no charge
- a & b are correct
Answer:
Q6. VLSI includes more than 10,000 circuits in a single chip. True / False
Answer:
Q7. Generally, the type of ICs are used _________________.
- Thin Film
- Photo Graphite
- Thin Film
- Monolithic
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Q8. A Pin Diode is composed of 4 sections. True / False
Answer:
Q9. The power dissipation range of CMOS family is_______________.
- Peco Watt
- Nano Watt
- Mega Watt
- Micro Watt
Answer:
Q10. The benefits of TTL has easy interfacing with other circuits and fast speed. True / False
Answer:
Q11. Intrinsic semi-conductor is a _____________ semi-conductor.
- pure
- impure
- polarized
- large size
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Q12. The pure tungston cathode has efficiency of emission is 2 to 10 ma watt. True / False
Answer:
Q13. Indirectly heated cathodes are made of_________________.
- oxide coated electrodes
- pure tungsten
- arsenic
- germanium
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Q14. The drift of electrons in the conductors causes of eclectic current due to electric field. True / False
Answer:
Q15. At room temperature, Intrinsic semiconductor have _____________ available for conduction.
- holes
- electrons
- None is correct
- both electrons & holes
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Q16. The conductivity of emitter region in transistor is kept higher than the base region. True / False
Answer:
Q17. HTL stands for____________________________________.
- High Tide Line
- Hole Transport Layer
- High Threshold logic
- Hole Transport Layer
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Q18. The majority carriers in the PNP transistor are holes and NPN transistors are electrons. True / False
Answer:
Q19. The Boolean equation for AND Gate is______________.
- A.B=C
- A.C=B
- A=BC
- A+B=C
Answer:
Q20. ECL is also called current mode logic. True / False
Answer:
Q21. _______________ uses Poly Silicon gates.
- CMOS
- PMOS
- HCMOS
- MOS
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Q22. A transistor may be regarded as a combination of two diodes connected back to back. True / False
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Q23. An ____________ gate performs logic addition.
- AND
- OR
- NAND
- NOR
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Q24. Capacitor input filter consists of one inductor and one capacitor. True / False
Answer:
Q25. Semi-conductor diodes are used as rectifier because it offer ________ resistance in one direction and __________ resistance in other direction.
- high, low
- low, high
- high, high
- low, low
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Q26. Bipolar Transistor is a three layers semi-conductor device. True / False
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Q27. Silicon Controlled Rectifier (SCR) belongs to _____________.
- thyristor family
- logic family
- diode family
- triode family
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Q28. In the PNP transistor, the base is made of N material. True / False
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Q29. In an ideal semi-conductor diode, reverse current is____________.
- infinity
- zero
- maximum
- minimum
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Q30. An ideal diode works like a closed switch when reverse biased. True / False
Answer:
Q31. In a DC circuit, the capacitor acts like _________ to the DC source.
- open
- closed
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Q32. During Alloy Process while formation of PN junction, one type of material is placed on the wafer of the opposite type. True / False
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Q33. A Semi-Conductor diode designed to operate in the breakdown region is called __________ diode.
- Photo
- schottky
- tunnel
- zener
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Q34. The total base current of a transistor consists of two currents flowing in same directions. True / False
Answer:
Q35. The ratio of IC and IE gives the __________ of a transistor.
- alpha
- beta
- gamma
- all are correct
Answer:
Q36. A transistor does not conduct unless its emitter base junction is forward biased. True / False
Answer:
Q37. The transistor beta (β) is much __________ than the Alpha (α).
- larger
- smaller
Answer: a
Q38. In the Common Base Amplifier, a positive going input signal produces a positive going output signal. True / False
Answer:
Q39. A JFET always operates with the gate to source PN Junction____________ biased.
- reverse
- forward
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Q40. For VGS = 0v, the drain current becomes constant when VDS exceeds VP. True / False
Answer:
Q41. The constant current region of the FET lies between __________________.
- pinch-off and breakdown
- cut-off and pinch off
- saturation and cut-off
- all are correct
Answer:
Q42. IDSS is the maximum possible drain current. True / False
Answer:
Q43. The channel of FET is between the drain and _____________.
- gate
- source
- output
- input
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Q44. Drain current in the constant region increases when the gate to source bias voltage decreases. True / False
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Q45. Silicon has Z = 14, its outermost orbit_____________.
- half filled
- partially filled
- completely filled
- empty
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Q46. In an intrinsic semi-conductor, major part of the current is due to the conduction band electrons . True / False
Answer:
Q47. Semi-conductor materials have ___________ bonds.
- mutual
- ionic
- metallic
- covalent
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Q48. The distance between conductors, insulators and semi-conductors is largely concerned with binding energy of their electrons. True / False
Answer:
Q49. The distribution of electrons in the Si atom is ____________.
- 2, 8, 4
- 2, 8, 8
- 2, 4, 8
- 2, 2, 4
Answer:
Q50. A summing amplifier can have any number of inputs. True / False
Answer:
My correct answer 38
Wrong 8
and no touch 3
If their is no negative marking I have got 76 marks!
Thank you so much.
Dear Sr Said, well-done you have done a good job