 # Electronics Engineering Mastery Test 1: ECE Pre-Board

(Last Updated On: September 4, 2018) This is 100 items set of Practice Examination 1 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 1

Choose the letter of the best answer in each questions.

1. ECE Board Exam November 1995

What is an electronic measuring equipment used in navigation operating in 1GHz band which provides bearing and distance indication?

• A. TACAN
• B. ODR
• C. ILS
• D. DME
View Answer:

Answer: Option A

Solution:

2. ECE Board Exam November 1995

Find the output of four (4) lead acid cells.

• A. 3.2 V
• B. 8.4 V
• C. 5.8 V
• D. 1.6 V
View Answer:

Answer: Option B

Solution:

3. ECE Board Exam November 1995

The reciprocal of capacitance is called

• A. elastance
• B. permittivity
• C. conductance
• D. permeability
View Answer:

Answer: Option A

Solution:

4. ECE Board Exam November 1995

An advantage of full-wave rectifier over half-wave rectifier.

• A. Each diode can cool-off during half of each input cycle.
• B. The ripple frequency is lower.
• C. The tube will conduct during both halves of the cycle.
• D. Output voltage is lower with more ripples.
View Answer:

Answer: Option C

Solution:

5. ECE Board Exam November 1995

What composes all matter whether a liquid, solid or gas?

• A. Atoms
• B. Electrons
• C. Protons
• D. Neutrons
View Answer:

Answer: Option A

Solution:

6. ECE Board Exam November 1995

What is the majority carrier in an N material?

• A. Holes
• B. Neutrons
• C. Electrons
• D. Protons
View Answer:

Answer: Option C

Solution:

7. ECE Board Exam November 1995

A very high resistance connected in parallel with smoothing capacitors in a high voltage DC system is called a

• A. dropping resistor
• B. shunt
• C. divider
• D. bleeder
View Answer:

Answer: Option D

Solution:

8. ECE Board Exam November 1995

What is the smallest part of a computer language?

• A. Binary
• B. Byte
• C. Bit
• D. Word
View Answer:

Answer: Option C

Solution:

9. ECE Board Exam November 1995

A user-program that has the ability to move a robot axis to any position within its range

• A. Point-to-point
• B. Continuous path
• C. Positive stop
• D. Pick-and-place
View Answer:

Answer: Option A

Solution:

10. ECE Board Exam November 1995

What level is used to represent logic-1 in a negative logic circuit?

• A. Negative transition level
• B. Low level
• C. Positive transmission level
• D. High level
View Answer:

Answer: Option B

Solution:

11. ECE Board Exam November 1995

What law in electronics where an induced current will be in such a direction that its own magnetic field will oppose the magnetic field that produces the same?

• A. Electromagnetic law
• B. Nortons law
• C. Lenz law
• D. Maxwells law
View Answer:

Answer: Option C

Solution:

12. ECE Board Exam November 1995

What is the reason why robot actuators have lesser capabilities than electric or hydraulic robot actuators?

• A. It has quick response
• B. It always has oil leaks
• C. It always has all or nothing motion
• D. It has high initial cost
View Answer:

Answer: Option C

Solution:

13. ECE Board Exam November 1995

_______ has the unit of electron volt.

• A. Charge
• B. Potential difference
• C. Energy
• D. Current
View Answer:

Answer: Option C

Solution:

14. ECE Board Exam November 1995

What is the unit of magnetic flux in SI system?

• A. Weber
• B. Maxwell
• C. Tesla
• D. Gauss
View Answer:

Answer: Option A

Solution:

15. ECE Board Exam November 1995

What element possesses four valence electrons?

• A. Insulator
• B. Semi-insulator
• C. Semiconductor
• D. Conductor
View Answer:

Answer: Option C

Solution:

16. ECE Board Exam November 1995

What level is used to represent logic-0 in a negative logic circuit?

• A. High level
• B. Low level
• C. Negative transition level
• D. Positive transition level
View Answer:

Answer: Option A

Solution:

17. ECE Board Exam November 1995

In an Amplitude-Modulated (AM) radio transmitter, the modulator is _________.

• A. How amplification can be thought of as a decision making process
• B. How semiconductor replace vacuum
• C. A digital decision
• D. How to adapt a radio transmitter to make it useful as multiplier circuit.
View Answer:

Answer: Option A

Solution:

18. ECE Board Exam November 1995

Which of the following is the probable output if all inputs of a TTL gate are binary 1?

• A. Determinable
• B. Binary 0
• C. Binary 1
• D. Indeterminate
View Answer:

Answer: Option B

Solution:

19. ECE Board Exam November 1995

Term used to describe sudden reverse conduction of an electronic component caused by excess reverse voltage across the device.

• A. Cut-off
• B. Saturation
• C. Avalanche
• D. Revertion
View Answer:

Answer: Option C

Solution:

20. ECE Board Exam November 1995

Given the two voltages:

S(t)=10cos(ωt+30 degrees) volts

Q(t)=15cos(ωt+45 degrees) volts

Find V(t)=S(t) + Q(t)

• A. V(t) = 5.9cos(ωt + 71 degrees) volts
• B. V(t) = 24.8cos(ωt +3 9 degrees) volts
• C. V(t) = 25cos(ωt + 75 degrees) volts
• D. V(t) = 13.6cos(ωt + 75 degrees) volts
View Answer:

Answer: Option B

Solution:

21. ECE Board Exam November 1995

What type of materials formed when trivalent material is doped with silicon or germanium?

• A. N type
• B. N and P type
• C. PN type
• D. P type
View Answer:

Answer: Option D

Solution:

22. ECE Board Exam November 1995

What is the degree of exactness of measurement when compared to the expected value of the variable being measured?

• A. Accuracy
• B. Error
• C. Deviation
• D. Precision
View Answer:

Answer: Option A

Solution:

23. ECE Board Exam November 1995

The overall gain of an amplifier in cascade is

• A. the sum
• B. the average of each
• C. the product
• D. 100 % the sum
View Answer:

Answer: Option C

Solution:

24. ECE Board Exam November 1995

_________ is a byte of data stored in a memory location.

• A. 8 bits
• B. Character
• C. 4 bits
• D. Memory word

25. ECE Board Exam November 1995

An instrument used to measure one location in terms of coordinates.

• A. Global Positioning System
• B. Hydrometer
• C. Altimeter
• D. Increductometer
View Answer:

Answer: Option A

Solution:

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