EST Terms and Definitions Part 12

QUESTIONS:

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
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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
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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
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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
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EST Terms and Definitions Part 10

QUESTIONS:

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 Multipoint Distribution System (LMDS)
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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