Electronics Engineering Mastery Test 8: ECE Pre-Board

(Last Updated On: December 23, 2017)

Electronics Engineering Exam 8

This is 100 items set of Practice Examination 8 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 8

Choose the letter of the best answer in each questions.

1. What is a precision piece of test equipment used to compare an unknown voltage with an internal reference voltage and to indicate the difference in their values?

  • A. Integral voltmeter
  • B. Digital voltmeter
  • C. Differential voltmeter
  • D. Comparator
View Answer:

Answer: Option C

Solution:

2. What is the primary advantage of power-amplifier transmitters over keyed-oscillator transmitter?

  • A. Frequency stability
  • B. Practicality
  • C. Power capability
  • D. Availability
View Answer:

Answer: Option A

Solution:

3. What is the name given to a variety of rotary electromechanical, position sensing devices?

  • A. Synchros
  • B. Servos
  • C. Gyros
  • D. Rotors
View Answer:

Answer: Option A

Solution:

4. What is a system in which the precise movement of large load is controlled by a relatively weak control signal?

  • A. Sychro
  • B. Servo
  • C. Gyro
  • D. Rotor
View Answer:

Answer: Option B

Solution:

5. What type of capacitor with a usual range in values from 1 picofarad to 0.01 microfarad and may be used with voltages as high as 30,000 volts?

  • A. Mylar
  • B. Paper capacitor
  • C. Ceramic capacitor
  • D. Electrolytic capacitor
View Answer:

Answer: Option C

Solution:

6. A material that removes oxides from surfaces to be joined by soldering or welding

  • A. Sandpaper
  • B. Rust converter
  • C. Acid
  • D. Flux
View Answer:

Answer: Option D

Solution:

7. What type of radar transmitter power is measured over a period of time?

  • A. Average power
  • B. Peak envelope power (PEP)
  • C. RMS power
  • D. Apparent power
View Answer:

Answer: Option A

Solution:

8. What is a mechanical device containing a spinning mass that is universally mounted?

  • A. Sychro
  • B. Servo
  • C. Gyroscope
  • D. Rotor
View Answer:

Answer: Option C

Solution:

9. What type of tube best meets the requirements of a modulator switching element?

  • A. Thyratron
  • B. Klystron
  • C. Magnetron
  • D. TWT
View Answer:

Answer: Option A

Solution:

10. In what manner are current-measuring instruments connected to a circuit?

  • A. Series-parallel
  • B. Series
  • C. Parallel-series
  • D. Parallel
View Answer:

Answer: Option B

Solution:

11. What refers to the ability of a gyro to keep its axis fixed in space?

  • A. Precession
  • B. Stability
  • C. Rigidity
  • D. Flexibility
View Answer:

Answer: Option C

Solution:

12. Most meggers you will use are rated at what voltage?

  • A. 1000
  • B. 100
  • C. 300
  • D. 500
View Answer:

Answer: Option DC

Solution:

13. Power transformer normally operates at ___ alternating current.

  • A. 60 Hz or 400 Hz
  • B. 30 Hz or 60 Hz
  • C. 60 Hz or 50 Hz
  • D. 60 Hz or 120 Hz
View Answer:

Answer: Option A

Solution:

14. What type of maintenance is used to isolate troubles by means of test techniques and practices that realign or readjust equipment or otherwise bring the equipment back up to proper performance?

  • A. Maintenance
  • B. Preventive maintenance
  • C. Corrective and preventive
  • D. Corrective maintenance
View Answer:

Answer: Option D

Solution:

15. The magnesium-manganese dioxide cell has a voltage of approximately how many volts?

  • A. 2 V
  • B. 1.5 V
  • C. 1.2 V
  • D. 1.35 V
View Answer:

Answer: Option A

Solution:

16. In a gyro, a vector representing the rotary motion applied to change the direction of the rotor axis is called ___.

  • A. Torque vector
  • B. Rotary vector
  • C. Horizontal vector
  • D. Torque gyro
View Answer:

Answer: Option A

Solution:

17. The strength of the magnetic field of the coils is dependent upon

a. The number of turns of the wire in the coil

b. The amount of current in the coil

c. The ratio of the coil length to the coil width

d. The type of material in the core

  • A. A, B and C
  • B. A,B,C and D
  • C. B,C and D
  • D. D, A and C
View Answer:

Answer: Option B

Solution:

18. What is the frequency range of magnetron oscillator?

  • A. 600 to 30 GHz
  • B. 600 to 30 THz
  • C. 600 to 30 MHz
  • D. 600 to 30 PHz
View Answer:

Answer: Option A

Solution:

19. Which of the basic timing circuits produces sharp trigger pulses directly?

  • A. 555 timer
  • B. Pulsed oscillator
  • C. Blocking oscillator
  • D. Keyed oscillator
View Answer:

Answer: Option C

Solution:

20. When taking resistance reading with a VOM, you will obtain the most accurate readings at or near what part of the scale?

  • A. Midscale
  • B. End scale
  • C. Full scale
  • D. Quarter scale
View Answer:

Answer: Option A

Solution:

21. Medium 1 range is designed to check what resistance values?

  • A. 10 to 50 kΩ
  • B. 100 to 500 kΩ
  • C. 50 to 10 kΩ
  • D. 10 to 1000 kΩ
View Answer:

Answer: Option C

Solution:

22. What does the Greek word “gyro” means?

  • A. Revolution
  • B. Rotation
  • C. Cycle
  • D. Spin
View Answer:

Answer: Option A

Solution:

23. What maximum voltage level can be attained in the pulse generator section by adjusting the LEVEL control?

  • A. 2.5 V
  • B. 10 V
  • C. 1.5 V
  • D. 5 V
View Answer:

Answer: Option D

Solution:

24. What frequencies are provided through the back-panel BNC?

  • A. 1 MHz and 10 MHz
  • B. 10 MHz and 15 MHz
  • C. 5 MHz and 10 MHz
  • D. 20 MHz and 30 MHz
View Answer:

Answer: Option A

Solution:

25. What is the direction of the magnetic field around a vertical conductor when the current flows upward?

  • A. Counterclockwise
  • B. Forward
  • C. Backward
  • D. Clockwise
View Answer:

Answer: Option A

Solution:

Electronics Engineering Mastery Test 8: ECE Pre-Board
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