1 PAULO JESSIE RAMOS MORALES
UNIVERSITY OF THE PHILIPPINES DILIMAN
94.60
2 MARIE THERESE SINGZON ROMANO
MAPUA INSTITUTE OF TECHNOLOGY-MANILA
94.30
3 RYAN TOBESA VILLAMOR
ADAMSON UNIVERSITY
93.90
4 NIXON ALBERT ESTACIO RAMOS
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES-MAIN-STA MESA
92.10
5 JOHN RAY NAVEA VILLACERAN
UNIVERSITY OF SAINT LA SALLE
92.00
6 JANELLE PANIS ESCONDE
SAINT LOUIS UNIVERSITY
91.90
7 JONEL DELA CRUZ DE LEON
BULACAN STATE UNIVERSITY (FOR.BCAT)-MALOLOS
91.70
JOSEPH SANDOVAL RIVERA
UNIVERSITY OF SAINT LA SALLE
91.70
8 MARC STEPHEN DOLOT OCAMPO
UNIVERSITY OF THE PHILIPPINES DILIMAN
91.60
9 JOHN RYAN DINGLASAN REGALARIO
TECHNOLOGICAL INSTITUTE OF THE PHILIPPINES-MANILA
91.50
10 EVRHOY DEJAPA COJA
TECHNOLOGICAL UNIVERSITY OF THE PHILIPPINES-VISAYAS
91.40
Electronics and Communications Engineering review notes and materials including rare materials. Provide your email address so you'll never miss a post. Available notes: NEETS with answers. More notes to be uploaded soon. Try the Online Reviewer to test your mastery on certain topics. http://ece-board.blogspot.com
is there any objective type questions in math board exam?or purely computation?how about GEAS,COMMS,ELEX?
There is objective type in math, around 4 to 7 questions out of the total 50 questions. There is computation in GEAS, EST, ELECS but it is formula-based (plug in) for around 20-50 questions out of 100. There are too many formulas and many of them will be very difficult to remember when you're stressed/in panic.
i failed in the the ece board 3 times.what will i do now?
Did you try enrolling in review centers? they are a big help. I suggest you take it until you pass but you have to start working since you cant be idle for too long (companies dont like that). The ECE license is seldom used since companies that require them (Smart, Globe) pays very little (small salary). The IT field is the most popular nowadays because of big salary and large demand even overseas. However, you will never know when you will need the license. You can't take the board when you're really old since your learning capability will diminish. So I suggest you take it until you pass. I know it will be difficult, but I think its worth it.
in geas, ano mas maraming question objectives or problem solving
objectives but for problem solving all you need is the formula. be careful since wrong answers (wrong plug-in) is in the choices.
may reviewer po ba kyo ng pang ECT board exams?
Please provide topics/subjects so we can upload them in the website.
EST Terms and Definitions Part 12
QUESTIONS:
ANSWERS:
In TV system, the color level control is in the ______? |
The max. radiation for electronic equipment must not exceed ___ mr/week |
What refers to any sonic, infrasonic, or ultrasonic wave which is emitted from electronic product as a result of the operation of its electronic circuit |
What is the formula for REM? |
Radiation exposure rates produced by a TV receiver shall not exceed ____ milli roentgens per hour at the distance of 5cm from any point on external surface of the receiver? |
Why are larger antennas receive stronger signals than smaller antenna? |
What is the advantage of Dougherty linear? |
What vacuum tube is used for microwave amplification and oscillation? |
What is the advantage of using variable and balance T-type attenuator pass as gain control? |
What refers to the sampling of analog signal used in a sample and hold circuit such that the sample will have the same amplitude for its whole duration |
Which of the ff. identifies the maximum transmitted power level of a mobile phone? |
Which of the ff. is not a supervisory tone? |
If the distance between the sound source and the listener is changing, the freq. heard will defer from the freq. emitted, this phenomenon is called? |
One document required for application of MPDP is a list of stock of spare parts and accessories sufficient enough to cover the warranty of mobile phone units for at least how many months? |
How much is the inspection fee for application of MPDP or MPCP? |
Which NTC memorandum circular provides for the additional rules and regulations on the purchase, sale, lease and retail of mobile phones? |
What protocol is used in the check sum method of error detection? |
In cellular system, typically how many cells in the freq. reuse plan format? |
ANSWERS:
BPA |
100 |
Radiation |
Rbe x rad |
0.5 |
Because they have greater effective area or greater proportion of radiated energy intercepted |
High efficiency |
Klystron |
Maintain small constant z |
Flat top sampling |
Station class mark |
4000Hz |
Doppler effect |
6 months |
Php720/year |
MC 08-08-2004 |
X modem |
7 |
GEAS Terms and Definitions Part 16
1. The ___________ of pivoted object is that point at which it can be struck without producing a reaction force on it … (pwd…)
ANSWER: Center of Oscillation
2. The __________ of a system undergoing simple harmonic motion is the time needed for it to make one complete oscillation.
ANSWER: ___________
3. What type of energy … transmitted by rotary …
ANSWER: Mechanical energy
4. It is the measure of a material’s rigidity
ANSWER: Shear Modulus
5. Heat is the energy in transit from one mass to another due to different in temperature
6. The ratio of thickness and thermal conductivity: Thermal Resistance
7. The greater the thermal conductivity the faster the heat transfer
8. Measure of fluid internal resistance Viscosity
9. What is the international distress frequency for radio telephony?
ANSWER: 2128 KHz
10. How much is the fine for an unauthorized servicing for mobile telephones?
ANSWER: P5000 per unit
11. Which of the following is acidic?
ANSWER: Acids have a pH of 0 to 6. The lesser the pH #, the more it is acidic for example, pH1.
12. The unit for illumination of surface is called
ANSWER: Lumens
13. Which standard is utilized for intermodulation noise rate of PCM audio channels?
ANSWER: CCITT Rec. G. 172
14. The policy adopted for improving the provision of local exchange carrier service is embodied in Executive Order No.
ANSWER: 109
15. The zero gravitational potential energy is
ANSWER: arbitrary
16. What is the gas produced by the action of sunlight on automobile exhaust?
ANSWER: Ozone
17. On or many non-metallic surface extensions shall be permitted to run on any directions from an existing outlet but not on the floor or within __________ from the floor
ANSWER: 50 mm
18. A non-metallic sheathed cable shall have not a bending radius less than __________ times the diameter of the cable.
ANSWER: 5
19. The RA 9292 is signed by President Gloria Macapagal-Arroyo in what date?
ANSWER: April 17, 2004
20. What is the international distress frequency for aeronautical services
ANSWER: 121.5 MHz
21. In cellular systems, what is the average lead time for installing a new base system?
ANSWER: 6 months to 1 year
22. Conductors concealed in a knob or tube wiring, there must be a clearance NOT less than ____________ between the conductor and the surface which it passes over.
ANSWER: 26 mm
23. Boyle’s Law
ANSWER: P1V1=P2V2
24. In ITU emission designation, the third symbol refers to the type of information to be transmitted. What symbol is used for telephony?
ANSWER: E
25. Who proposed the modern atomic theory?
ANSWER: Dalton
26. The frequency band reallocated by NTC for wireless broadband access for fixed, nomadic, and mobile network
ANSWER: 450-470 MHz
27. Broadcast station logs must be kept for NTC for ____________.
ANSWER: 1 year
28. Short haul communications refers to communications with a distance not less than
ANSWER: 150 km
29. A registered electronics engineer must be a member of an accredited professional organization within ________ years after the effectivity of RA 9292.
ANSWER: 3
30. The maximum term of contract of authority given to cable TV operators
ANSWER: 15 years
31. In every drawing, there must be a standard title block which contains the project owner, title of the sheet, scale used, name and signature of the PEE. The width of the title block is _________
ANSWER: 40 mm
32. In hospitals, the general lighting load required shall be __________ VA/m2
ANSWER: 16
33. CMTS operators is encouraged to improve the grade of service by 1% every 2 years until it reaches ___________
ANSWER: 4%
34. the best way of preventing the increase of CO concentration in the atmosphere is
ANSWER: to reduce the use of oil and coal
35. The statement that has a possible solution is a
ANSWER: hypothesis
36. CMTS operators required by the NTC to improve their drop call rate by 1% every 2 years until the Drop Call Rate is __________.
ANSWER: 2%
37. the equivalent of 1 Joule is
ANSWER: 107 ergs
38. What substance is added to the filtrate to kill molds, microorganisms and bacteria?
ANSWER: chlorine
39. In international AM broadcasting, signal maintain authorized power output is not less than
ANSWER: 50 kW
40. What is the Capitalization for MDPD (Mobile Phone Dealer’s Permit)?
ANSWER: P 100,000
GEAS Terms and Definitions Part 15
1. What are the elements falls under Group IA in the periodic table?
ANSWER: Alkali Metals
2. What are the elements falls under Group 2A in the periodic table?
ANSWER: Alkaline Earth Metals
3. What are the elements falls under Group 3A in the periodic table?
ANSWER: Boron Family
4. What are the elements falls under Group 4A in the periodic table?
ANSWER: Carbon Family
5. What are the elements falls under Group 5A in the periodic table?
ANSWER: Nitrogen Family
6. What are the elements falls under Group 6A in the periodic table?
ANSWER: Oxygen Family
7. What are the elements falls under Group 0 in the periodic table?
ANSWER: Inert/ Noble Gases
8. Metalloids have a valence of
ANSWER: 4
9. What is the atomic number of oxygen?
ANSWER: 8
10. What element that has 3 protons?
ANSWER: Lithium
11. What element will you combine with alkali metals to form salts?
ANSWER: Chlorine
12. What is the most common alloying ingredient in copper?
ANSWER: Zinc
13. What is the most electronegative element?
ANSWER: Fluorine
14. What is the most abundant metal in the earth’s surface?
ANSWER: Aluminum
15. What element in which has the lowest boiling point?
ANSWER: Mercury
16. It is a greenish-yellow halogen gas.
ANSWER: Chlorine
17. What do you call the bluish-black substance in which, when burned, it will produce purple fumes?
ANSWER: Iodine
18. What do you call a nuclei that has same number of Atomic number but has different Atomic weight?
ANSWER: Isotopes
19. When Hydrogen melts in the sun, it is converted to Helium and produces light in the sun
ANSWER: Fusion
20. When a solid has a crystalline structure, the atoms arranged in repeating structure is called
ANSWER: unit cell
21. What crystalline structure that has coordination number of 12?
ANSWER: Face-centered cubic
22. What crystalline structure that has a coordination number of 8?
ANSWER: Body-centered cubic
23. What crystalline structure that has a packing factor of 0.52?
ANSWER: simple cubic
24. What crystalline structure that has a packing factor of 0.74
ANSWER: Face-centered cubic
25. Chromium has a body-centered cubic crystalline structure
ANSWER: Face-centered cubic
26. It shows each atom and ion with repeating structure in the crystalline
ANSWER: non-Bravais lattice
27. What do you call the distinct pattern in the space which the atoms of metal arranged themselves when they combine to produce a substance of recognizable size?
ANSWER: Space Lattice
28. The Lanthanides were once called as _____________.
ANSWER: rare earth
29. Alkali solutions are also called
ANSWER: Hydroxides
30. Compounds containing halogen and another element (except oxygen) are called _____________.
ANSWER: Halides
GEAS Terms and Definitions Part 14
1. What alkali metals are protected from air, water and other substances?
ANSWER: because alkali metals are the most reactive
2. What is the third most conductive material?
ANSWER: Gold
3. What is the least conductive material
ANSWER: nichrome
4. What is the other name of a negative electron?
ANSWER: Negatron
5. What is the decay wherein protons and neutrons are decreased by 2 and may result in a stable nucleus?
ANSWER: Alpha Decay
6. What physical property of a material that refers to the temperature at which ferromagnetic materials can no longer be magnetized by outside forces
ANSWER: Curie point
7. What is the Curie temperature of iron?
ANSWER: 770 degrees Celsius
8. Lodestone is a natural magnet.
9. It is the material used in making permanent magnet
ANSWER: hardened steel
10. What is the inferred absolute zero temperature of annealed copper?
ANSWER: -234.5 degrees Celsius
11. Which material that has a permeability slightly greater than 1?
ANSWER: Aluminum
12. What is the conductivity of a 99.5% pure aluminum?
ANSWER: 63%
13. What is the conductivity of a pure annealed copper wire?
ANSWER: 102.1%
14. What is the conductivity of a 99.9% pure gold?
ANSWER: 72.6%
15. What is the conductivity of a pure annealed silver wire?
ANSWER: 108.8%
16. What is a reference sheet for element that can be used to form engineering materials?
ANSWER: Periodic Table
17. What group of metals that are very soft metals?
ANSWER: Alkali metals
18. All elements in the center gap are __________.
ANSWER: metals
19. How many elements are found in Period 1 of the Periodic Table?
ANSWER: 2
20. How many elements are found in Period 2 of the Periodic Table?
ANSWER: 8
21. How many elements are found in Period 3 of the Periodic Table?
ANSWER: 8
22. How many elements are found in Period 4 of the Periodic Table?
ANSWER: 18
23. How many elements are found in Period 5 of the Periodic Table?
ANSWER: 18
24. The elements found in the center of the periodic table of elements are called __________.
ANSWER: Transition metals
25. The elements/ groups found in the Left and Right of the periodic table of elements is called __________.
ANSWER: Main Groups
26. What is the group of elements found in Period 6 of the Periodic Table of elements and is between Lanthanum and Lutetium?
ANSWER: Lanthanides
27. Why noble gases are called inert gases?
ANSWER: Because they are substances that are not chemically reactive
28. Most actinides are radioactive. They are also found in the Period 7 of the Periodic Table of Elements.
29. Halogens react with Groups 1A and 2A.
30. Halogens fall under what group in the periodic table?
ANSWER: Group 7A/7B
EST Terms and Definitions Part 10
QUESTIONS:
ANSWERS:
How is tapped single button microphone cleared? |
What helps protect fiber against degradation cause by moisture |
For an angle of incidence = to the critical angle the light will be refracted |
How much more feed point Z does a folded dipole have than normal dipole |
What filter may be connected between a CB transmitter and its antenna |
When real time communication is required the only way to address the second fragment is to use a ____ containing more that 1 satellite |
What is the common usage of single button microphones |
What is the advantage of using hub over direct interconnection to all the terminals |
A broadcast station is transmitting but not modulating, what is heard in a receiver tuned to its frequency |
A network using microwave for two way transmission of telephony and in high speed data |
In TV system, if the 3.58MHz C amp in the receiver does not operate, the result will be __________? |
What refers to the emphasizing low level signals and compressing high level signals |
A system that allows user to access documents from widely separated sources of the internet using a common interface |
What is the max efficiency of class C amp? |
What is the max recommended cable length of RS232C cable? |
What is the typical value of line turn around? |
Which pulse in the V blanking corresponds to 3H lines wide? |
What refers to the nonlinear effect that occurs at low power as low as 3mw in single mode fiber and takes the form of a light shifter slightly in freq from the original light wave |
In wide area networks what routing technique requires each node to take the incoming packet and retransmit it onto every outgoing line? |
For analog dram scanners what type of modulation is used after the receive light has been converted into electrical energy? |
What is the most commonly used transmission line? |
In what 2 systems in the voice transmitter can speech processing be used? |
What can be determined about a transformer by an ohmmeter? |
Why is a matched line indistinguishable from an infinitely long line as seen from the source? |
What type of circuit produces even order harmonics? |
What is the designation of SSB with full carrier? |
What is the achievable data rate of the 3G cellular system? |
What is the time period for a single time slot in GSM TDMA structure? |
What packets switch data technique is used with the GSM systems? |
What do you call the process by analog signal are transmitted by converting them into a series of pulses whose amplitude is approximately the shape of the analog signal |
In Ethernet LAN, what situation arises when two or more terminals try to transmit in the network at the same time? |
What do you call the interval which it’s an integer or whole fraction ratio |
What is defined as the ratio of freq of two pure tones? |
What do you call the first note of the musical scale? |
In what year will the FCC face the analog broadcasting? |
Which of the following is or are parts of the network interface card? |
Which of the ff wavelengths where absorption of electromagnetic waves becomes peak due to vibrational resonance in the water vapor molecule |
What class of mobile phone has a maximum power level specified as ERP of -2dBW or 600mW |
ANSWERS:
Jarred |
Cabling |
Along the normal |
4 times |
Low pass filter |
Constellation |
In telephones |
Its easy to move computers |
Nothing |
Local |
No color |
Companding |
WWW |
100% |
50 feet |
1.5 ms |
V sync |
Bruilloin scattering |
Flooding |
FM |
Coax cable or line |
AF and RF |
Winding continuity, shorts to case and interwinding shorts |
Since no energy is reflected from the match load, so for the source it appears as if energy is put into the line continuous to move down the line forever |
Push-pull |
H3E |
More than 2Mbps |
8 |
GPRS |
PAM |
Contention |
Octave interval |
Interval |
Root note |
2006 |
Both BNC and RJ49 connectors |
1.35cm and 1.7mm |
Class III (mobile phone) |
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