Electronics Engineering Mastery Test 2: ECE Pre-Board

(Last Updated On: December 26, 2017)

Electronics Engineering Exam 2

This is 100 items Practice Examinations set 2 in Electronics Engineering composed of previous Board Exams Questions. Read each questions and choices carefully! Choose the best answer. In the actual board, you have to answer 100 items in Electronics Engineering within 5 hours. You have to get at least 70% to pass the subject. Electronics Engineering is 30% of the total 100% Board Rating along with Mathematics (20%), General Engineering and Applied Sciences (20%) and Electronics Systems and Technology (30%).

Start the Test Yourself Exam 2

Choose the letter of the best answer in each questions.

1. ECE Board Exam March 1996

What is a group of circuits that provides timing and signals to all operation in the computer?

  • A. Output unit
  • B. Memory unit
  • C. Control unit
  • D. Input unit
View Answer:

Answer: Option C

Solution:

2. ECE Board Exam March 1996

Where does voltage generated in a DC generator depend?

  • A. Field resistance and flux
  • B. Field and armature currents
  • C. Flux and speed
  • D. Speed and field resistance
View Answer:

Answer: Option C

Solution:

3. ECE Board Exam March 1996

__________ is the most influential factor in the switching speed of saturated bipolar transistor

  • A. Charge stored
  • B. Collector current
  • C. HFE
  • D. Base current
View Answer:

Answer: Option A

Solution:

4. ECE Board Exam March 1996

What is a pi-network?

  • A. A Power Incidence Network
  • B. A network consisting of one inductor and two capacitors or two inductors and one capacitor
  • C. A network consisting entirely of four inductors or four capacitors
  • D. An antenna matching network that is isolated form ground
View Answer:

Answer: Option B

Solution:

5. ECE Board Exam March 1996

__________ is the property of a material which opposes creation of magnetic flux?

  • A. Resistance
  • B. Permeance
  • C. Reluctance
  • D. Conductance
View Answer:

Answer: Option C

Solution:

6. ECE Board Exam March 1996

The purpose of cells connected in parallel is to

  • A. increase internal resistance
  • B. increase voltage output
  • C. decrease current capacity
  • D. increase current capacity
View Answer:

Answer: Option D

Solution:

7. ECE Board Exam March 1996

What does SI magnetic flux refer?

  • A. Weber
  • B. Flux
  • C. Maxwell
  • D. Lines
View Answer:

Answer: Option A

Solution:

8. ECE Board Exam March 1996

__________ is a type of linear regulator used in applications requiring efficient utilization of the primary power source.

  • A. A series regulator
  • B. A shunt regulator
  • C. A constant current source
  • D. A shunt current source
View Answer:

Answer: Option A

Solution:

9. ECE Board Exam March 1996

When a switch is closed, it has a total resistance of

  • A. 1000 ohms at room temperature
  • B. unstable
  • C. infinity
  • D. zero
View Answer:

Answer: Option D

Solution:

10. ECE Board Exam March 1996

How many turns are needed to produce a magnetizing force of 5000 A.t. for a coil of 50 amperes?

  • A. 1,000 turns
  • B. 5,000 turns
  • C. 100 turns
  • D. 500 turns
View Answer:

Answer: Option C

Solution:

11. ECE Board Exam March 1996

When an SCR is triggered or on condition, its electrical characteristics are similar to what other solid-state device (as measured between its cathode and anode)?

  • A. The junction diode
  • B. The varactor diode
  • C. The tunnel diode
  • D. The hot-carrier diode
View Answer:

Answer: Option A

Solution:

12. ECE Board Exam March 1996

What special type of diode is capable of both amplification and oscillation?

  • A. Point contact diode
  • B. Junction diode
  • C. Zener diode
  • D. Tunnel diode
View Answer:

Answer: Option D

Solution:

13. ECE Board Exam March 1996

A static memory generally contains

  • A. electrons
  • B. positive ions
  • C. row decoders
  • D. holes
View Answer:

Answer: Option C

Solution:

14. ECE Board Exam March 1996

Which is the majority carrier in an N-type semiconductor?

  • A. Electrons
  • B. Positive ions
  • C. Negative ions
  • D. Holes
View Answer:

Answer: Option A

Solution:

15. ECE Board Exam March 1996

Steel is hard to magnetize because of its _______.

  • A. high retentivity
  • B. low permeability
  • C. high permeability
  • D. high density
View Answer:

Answer: Option B

Solution:

16. ECE Board Exam March 1996

When you increase the resistance in a circuit, the flows of electrons will ______

  • A. flow faster
  • B. be constant
  • C. be decreased
  • D. be stopped
View Answer:

Answer: Option C

Solution:

17. ECE Board Exam March 1996

Current in a chemical cell refers to the movement of ________

  • A. negative ions only
  • B. negative and positive ions
  • C. positive ions only
  • D. negative hole charge
View Answer:

Answer: Option B

Solution:

18. ECE Board Exam March 1996

What is the effect of light in a photodiode?

  • A. Reverse current
  • B. Limits flow of current
  • C. Forwards current
  • D. Renders unstable current
View Answer:

Answer: Option A

Solution:

19. ECE Board Exam March 1996

What is the effect in terms of bandwidth when the Q of a single-tune stage is doubled?

  • A. Doubled
  • B. The same
  • C. Halved
  • D. Four times
View Answer:

Answer: Option C

Solution:

20. ECE Board Exam March 1996

___________ is the dc motor control senses.

  • A. Resistance
  • B. Counter emf
  • C. Field voltage
  • D. Armature current
View Answer:

Answer: Option B

Solution:

21. ECE Board Exam March 1996

What is the range of voltage rating available in zener diodes?

  • A. 2.4 volts to 200 volts
  • B. 1.2 volts to 7 volts
  • C. 3 volts to 2000 volts
  • D. 1.2 volts to 5.6 volts
View Answer:

Answer: Option A

Solution:

22. ECE Board Exam March 1996

Find which type of network provides the greatest harmonic suppression.

  • A. Pi-network
  • B. Pi-L-network
  • C. Inverse-Pi-network
  • D. L-network
View Answer:

Answer: Option B

Solution:

23. ECE Board Exam March 1996

What type of transformer that is used to protect technicians and operators from deadly electrical shock?

  • A. Absorber transformer
  • B. Step-down transformer
  • C. Step-up transformer
  • D. Isolation transformer
View Answer:

Answer: Option D

Solution:

24. ECE Board Exam March 1996

What is residual magnetism?

  • A. The external magnetic field when the current is flowing through the exciting coil.
  • B. The flux density, which exist in the iron core when the magnetic field intensity is reduced to zero.
  • C. The flux density, which exist in the iron core when the magnetic field intensity is at its maximum value.
  • D. The flux density when the magnetic core is saturated.
View Answer:

Answer: Option B

Solution:

25. ECE Board Exam March 1996

When batteries have cells connected in series the effect is

  • A. reduced output voltage
  • B. increased current supply
  • C. increased voltage supply
  • D. reduced internal resistance
View Answer:

Answer: Option C

Solution:

Electronics Engineering Mastery Test 2: ECE Pre-Board
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