Electronics Engineering Mastery Test 3: ECE Pre-Board

(Last Updated On: December 26, 2017)

Electronics Engineering Exam 3

This is 100 items Practice Examinations set 3 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 3

Choose the letter of the best answer in each questions.

1. ECE Board Exam November 1996

What is a medium of communication with a computer where programs are written in mnemonics?

  • A. Assembly Language
  • B. High level Language
  • C. Machine Language
  • D. Low level Language
View Answer:

Answer: Option C

Solution:

2. ECE Board Exam November 1996

The arrow in the symbol of a transistor indicates the direction of

  • A. Electron current in the collector
  • B. Donor ion current
  • C. Electron current in the emitter
  • D. Hole current in the emitter
View Answer:

Answer: Option D

Solution:

3. ECE Board Exam November 1996

Digital ICs are mostly

  • A. hybrid
  • B. thick film
  • C. thin film
  • D. monolithic
View Answer:

Answer: Option D

Solution:

4. ECE Board Exam November 1996

A ___________ is a program which converts instruction written in a source language into machine code which can be read and acted upon by the computer.

  • A. source code
  • B. assembler
  • C. application software
  • D. compiler
View Answer:

Answer: Option B

Solution:

5. ECE Board Exam November 1996

What is the total resistance of a two equal valued resistor in series?

  • A. Twice as one
  • B. The sum of their reciprocal
  • C. The difference of both
  • D. The product of both
View Answer:

Answer: Option A

Solution:

6. ECE Board Exam November 1996

What two elements widely used in semiconductor devices exhibit both metallic and non-metallic characteristics?

  • A. Galena and Germanium
  • B. Silicon and Gold
  • C. Galena and Bismuth
  • D. Silicon and Germanium
View Answer:

Answer: Option D

Solution:

7. ECE Board Exam November 1996

What do you expect when you use the two 20 k-ohms, 1 watt resistor in parallel instead of one 10 k-ohms, 1 watt?

  • A. Provide more power
  • B. Provide lighter current
  • C. Provide less power
  • D. Provide wider tolerance
View Answer:

Answer: Option A

Solution:

8. ECE Board Exam November 1996

Find the required battery capacity needed to operate an equipment of 30 Amperes at 5 hours.

  • A. 6
  • B. 30
  • C. 3
  • D. 150
View Answer:

Answer: Option D

Solution:

9. ECE Board Exam November 1996

What does ALU which carries arithmetic and logic operations process?

  • A. Binary coded decimal numbers
  • B. Hexadecimal numbers
  • C. Octal numbers
  • D. Binary numbers
View Answer:

Answer: Option B

Solution:

10. ECE Board Exam November 1996

A static memory will store information

  • A. as long as power is applied to the memory
  • B. even when power is not applied to the memory
  • C. as long as power is applied and the memory is refreshed periodically
  • D. when power is applied at regular intervals
View Answer:

Answer: Option B

Solution:

11. ECE Board Exam November 1996

The conductance of a circuit having three (3) 10 ohms resistors in parallel is

  • A. 3.33 S
  • B. 0.30 S
  • C. 0.333 S
  • D. 30 S
View Answer:

Answer: Option B

Solution:

12. ECE Board Exam November 1996

Protons are about _______ heavier than electrons.

  • A. 1,800 times
  • B. less than thrice
  • C. less
  • D. twice
View Answer:

Answer: Option A

Solution:

13. ECE Board Exam November 1996

In half-wave rectifier, if a resistance equal to load resistance is connected in parallel with the diode then

  • A. circuit will stop rectifying
  • B. output voltage would be halved
  • C. output voltage would be doubled
  • D. output voltage will remain unchanged
View Answer:

Answer: Option A

Solution:

14. ECE Board Exam November 1996

______ refers to a function of a decade counter digital IC.

  • A. Producing one output pulse for every 10 input pulses
  • B. Adding two decimal numbers
  • C. Producing 10 output pulses for every input pulse
  • D. Decoding a decimal number for display on seven segment
View Answer:

Answer: Option A

Solution:

15. ECE Board Exam November 1996

What is the time interval to undertake a refresh operation in a typical dynamic RAM?

  • A. 2 ms
  • B. 200 ns
  • C. 50 µs
  • D. 22 µs
View Answer:

Answer: Option A

Solution:

16. ECE Board Exam November 1996

Electric energy refers to _________.

  • A. Joules divided by time
  • B. Volt-coulomb
  • C. Volt-ampere
  • D. Watt
View Answer:

Answer: Option B

Solution:

17. ECE Board Exam November 1996

What is the process by which AC is converted to pulsating DC?

  • A. Charging
  • B. Rectification
  • C. Filtering
  • D. Clipping
View Answer:

Answer: Option B

Solution:

18. ECE Board Exam November 1996

_______ frequency is reached when the capacitive and inductive reactance in a tuned circuit are equal.

  • A. Infinite
  • B. Resonant
  • C. Pulsating
  • D. Zero
View Answer:

Answer: Option B

Solution:

19. ECE Board Exam November 1996

A ______ is composed of voltage-controlled oscillator, a phase comparator and a low pass filter, where the oscillator generates the output frequency in response to an error voltage produced by the comparator.

  • A. JK flip-flop
  • B. error detection
  • C. voltage-to-frequency converter
  • D. phase-locked loop
View Answer:

Answer: Option D

Solution:

20. ECE Board Exam November 1996

How are the networks able to transform one impedance to another?

  • A. Resistance in the networks substitute for resistances in the load
  • B. The matching network can cancel the reactive part of an impedance and change the value of the resistive part of an impedance
  • C. The matching network introduces negative resistance to cancel the resistive part of an impedance
  • D. The matching network introduces transconductance to cancel the reactive part of an impedance
View Answer:

Answer: Option A

Solution:

21. ECE Board Exam November 1996

Which of the following demodulates an RF modulated wave?

  • A. RF amp
  • B. IF amp
  • C. Mixer
  • D. Detector
View Answer:

Answer: Option D

Solution:

22. ECE Board Exam November 1996

The ideal internal resistance of an ammeter should be

  • A. equal to the circuit’s resistance
  • B. zero
  • C. infinity
  • D. higher than the circuit’s resistance
View Answer:

Answer: Option B

Solution:

23. ECE Board Exam November 1996

What type of bias is required for an LED to produce luminescence?

  • A. Reverse bias
  • B. Zero bias
  • C. Forward bias
  • D. Inductive bias
View Answer:

Answer: Option C

Solution:

24. ECE Board Exam November 1996

What is the resonant frequency of a circuit when L of 2 microhenrys and C of 30 picofarads are in series?

  • A. 20.5 kHz
  • B. 20.5 MHz
  • C. 2.65 kHz
  • D. 2.65 MHz
View Answer:

Answer: Option B

Solution:

25. ECE Board Exam November 1996

_________ is a layer of insulating medium that separates the plates of a capacitor.

  • A. Insulator
  • B. Core
  • C. Dielectric
  • D. Space
View Answer:

Answer: Option C

Solution:

Electronics Engineering Mastery Test 3: ECE Pre-Board
Rate this:

Add Comment

© 2017 PinoyBIX Engineering. © 2017 All Rights Reserved | Donate
Basic Television – Grob TV Chapter Exercises
Series of Multiple Choice Questions in Engineering Mathematics
Complete Practice Quiz in Electronic Devices and Circuit Theory
Complete Practice Quiz in Data Communications and Networking
Online Tool: Color Code Conversions
Online Tool: Weight Measurement Conversions
Online Tool: Temperature Measurement Conversions
Online Tool: Length Measurement Conversions

Get FREE Review Course
in your inbox

Subscribe to our mailing list and get reviewers and updates to your email inbox.

Thank you for subscribing.

Something went wrong.