MCQs of Basic Electronics Questions Test with Answer Key PDF

MCQs of Basic Electronics Questions Test with Answer Key PDF

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 ___________________.                                .

  1. cathode
  2. anode
  3. grid
  4. plate

Answer:

Q2. Nucleus is made of electrons and protons.         True / False

Answer:

Q3. The number of free electrons are more in ___________.

  1. resistors
  2. conductors
  3. semi-conductors
  4. 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 ? 

  1. negative
  2. positive
  3. no charge
  4. 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 _________________.

  1. Thin Film
  2. Photo Graphite
  3. Thin Film
  4. Monolithic

Answer:   

Q8. A Pin Diode is composed of 4 sections.            True / False

Answer:  

Q9. The power dissipation range of CMOS family is_______________.

  1. Peco Watt
  2. Nano Watt
  3. Mega Watt
  4. 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.

  1. pure
  2. impure
  3. polarized
  4. large size

Answer:

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_________________.

  1. oxide coated electrodes
  2. pure tungsten
  3. arsenic
  4. germanium

Answer:

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.

  1. holes
  2. electrons
  3. None is correct
  4. both electrons & holes

Answer:   

Q16. The conductivity of emitter region in transistor is kept higher than the base region.                                                                                             True / False

Answer:  

Q17. HTL stands for____________________________________.

  1. High Tide Line
  2. Hole Transport Layer
  3. High Threshold logic
  4. Hole Transport Layer

Answer:

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______________.

  1. A.B=C
  2. A.C=B
  3. A=BC
  4. A+B=C

Answer:

Q20. ECL is also called current mode logic.                         True / False

Answer:  

Q21. _______________ uses Poly Silicon gates.

  1. CMOS
  2. PMOS
  3. HCMOS
  4. MOS

Answer:

Q22. A transistor may be regarded as a combination of two diodes connected back to back.                                                                                           True / False

Answer:  

Q23. An ____________ gate performs logic addition.

  1. AND
  2. OR
  3. NAND
  4. NOR

Answer:

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.

  1. high, low
  2. low, high
  3. high, high
  4. low, low

Answer:

Q26. Bipolar Transistor is a three layers semi-conductor device.                                                                                                                                  True / False

Answer:  

Q27. Silicon Controlled Rectifier (SCR) belongs to _____________.

  1. thyristor family
  2. logic family
  3. diode family
  4. triode family

Answer:

Q28. In the PNP transistor, the base is made of N material.                                                                                                                                True / False

Answer:  

Q29. In an ideal semi-conductor diode, reverse current is____________.

  1. infinity
  2. zero
  3. maximum
  4. minimum

Answer:

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.

  1. open
  2. closed

Answer:

Q32. During Alloy Process while formation of PN junction, one type of material is placed on the wafer of the opposite type.                                                                                                                                True / False

Answer:  

Q33. A Semi-Conductor diode designed to operate in the breakdown region is called __________ diode.

  1. Photo
  2. schottky
  3. tunnel
  4. zener

Answer:

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.

  1. alpha
  2. beta
  3. gamma
  4. 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).

  1. larger
  2. 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.

  1. reverse
  2. forward

Answer:

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 __________________.

  1. pinch-off and breakdown
  2. cut-off and pinch off
  3. saturation and cut-off
  4. 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 _____________.

  1. gate
  2. source
  3. output
  4. input

Answer:

Q44. Drain current in the constant region increases when the gate to source bias voltage decreases.                                                                                                                                                                                        True / False

Answer:  

Q45. Silicon has Z = 14, its outermost orbit_____________.

  1. half filled
  2. partially filled
  3. completely filled
  4. empty

Answer:

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.

  1. mutual
  2. ionic
  3. metallic
  4. covalent

Answer:

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 ____________.

  1. 2, 8, 4
  2. 2, 8, 8
  3. 2, 4, 8
  4. 2, 2, 4

Answer:

Q50. A summing amplifier can have any number of inputs.                       True / False

Answer:  

 

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