152106883 IECEP Electronics and Communications Engineering Quiz 2012
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Transcript of 152106883 IECEP Electronics and Communications Engineering Quiz 2012
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics (/) General Engineering and Applied Science () Electronics Engineering () Electronics System & Technologies
QUESTION: On the basis of magnetic response, superconducting materials
while in the superconducting state, are completely diamagnetic; that is,
all of an applied magnetic field will be excluded from the body of
material, a phenomenon known as the ___________.
ANSWER: Meissner effect
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Materials Science and Engineering, An Introduction, 7th ed, William D. Callister, pg 105
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics (/) General Engineering and Applied Science () Electronics Engineering () Electronics System & Technologies
QUESTION: In environmental engineering, this refers to the SI measure
of source strength or total radioactivity, and is defined as one
disintegration per second.
ANSWER: Becquerel
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Environmental Engineering 4th edition, Weiner and Matthews,
page 319
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics (/) General Engineering and Applied Science () Electronics Engineering () Electronics System & Technologies
QUESTION: In physics, this refers to a situation in which a very small
change in one place can amplify into a large change somewhere else.
ANSWER: Butterfly effect
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Conceptual Physics, 10th edition, Paul Hewitt, page 762
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics (/) General Engineering and Applied Science () Electronics Engineering () Electronics System & Technologies
QUESTION: A thin metal can is rolls down an inclined plane and reach the bottom with the speed of 4.43 m/s. Determine the speed at the bottom
when the can is full.
ANSWER: 5.12 m/s
SOLUTION ( IF PROBLEM -SOLVING)
Reference: College Physics 5th Ed. by Weber, Manning, White and Weygand,
pp. 126-127
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics (/) General Engineering and Applied Science () Electronics Engineering () Electronics System & Technologies
QUESTION: The bob of a pendulum has its rest point 1.00 m below the support. The bob is pulled aside until the string makes an angle of 15
degrees with the vertical. Upon release, with what speed does the bob
swing past its rest point?
ANSWER: 0.82 m/s
SOLUTION ( IF PROBLEM -SOLVING)
Reference: College Physics 5th Ed. By Weber, Manning, White and Weygand, p. 92
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics () General Engineering and Applied Science (/) Electronics Engineering () Electronics System & Technologies
QUESTION: It states that at any point P the magnitude of the magnetic field
intensity produced by the differential element is proportional to the product of the
current, the magnitude of the differential length, and the sine of the angle lying
between the filament and a line connecting the filament to the point P where the field
is desired.
ANSWER: Law of Biot-Savart SOLUTION ( IF PROBLEM -SOLVING)
Reference: Engineering Electromagnetics (5th Edition) by William H. Hayt, Jr., pp 217
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics () General Engineering and Applied Science (/) Electronics Engineering () Electronics System & Technologies
QUESTION: When controlling the action of a relay, one of the cheapest but most
effective ways to protect the switching system is to place a capacitor across the
terminals of the coil. This capacitor is commonly called _____?
ANSWER: Snubber SOLUTION ( IF PROBLEM -SOLVING)
Reference: Electronic Devices and Circuit Theory (10th Edition) by Robert L. Boylestad & Louis Nashelsky, pp 107
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics () General Engineering and Applied Science (/) Electronics Engineering () Electronics System & Technologies
QUESTION: A 1500-turn solenoid produces 600,000 maxwells when excited by a
current of 2.5 amp. Calculate the inductance.
ANSWER: 3.6 Henrys SOLUTION ( IF PROBLEM -SOLVING)
Reference: Electrical Circuits (2nd Edition) by Charles S. Siskind, pp 204
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics () General Engineering and Applied Science (/) Electronics Engineering () Electronics System & Technologies
QUESTION: Aseries of specb-aP lines obtained by the scattering of electrons when an electron beam is directed against a crystalline solid. The pattern may be interpreted to yield information on
the structure of the crystal and its mechanical perfection.
ANSWER: Kikuchi Lines SOLUTION ( IF PROBLEM -SOLVING)
Reference: Modern Dictionary of Electronics 7th Ed. By Rudolf F. Graf
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics () General Engineering and Applied Science (/) Electronics Engineering () Electronics System & Technologies
QUESTION: Simplify the Boolean expression to a minimum number of literals: xy +
yz + xz
ANSWER: xy + xz SOLUTION ( IF PROBLEM -SOLVING) xy + yz + xz = xy(z + z) + yz(x+ x) + xz(y + y) = xyz + xyz + yzx + yzx + xzy+ xzy = xyz + xyz + xyz + xyz = xy(z + z) + xz(y + y)
= xy + xz
Reference: Digital Design by M. Morris Mano, 2nd ed., p 69
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics () General Engineering and Applied Science () Electronics Engineering (/) Electronics System & Technologies
QUESTION: Informations transmitted to the mobile phone, either
subscribed or unsolicited messages, without a user request and are
initiated by the server of the content provider.
ANSWER: Push messages SOLUTION ( IF PROBLEM -SOLVING)
Reference: Section 2 NTC Memorandum Circular No. 03-02-2005, Rules and Regulations on Broadcast Messaging Service
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics () General Engineering and Applied Science () Electronics Engineering (/) Electronics System & Technologies
QUESTION: It is a wireless networking scheme that competes with both
802.11 and bluetooth schemes. It uses frequency hopping ang spread
spectrum communication at 2.4GHz and is intended for small home
networks.
ANSWER: Home RF SOLUTION ( IF PROBLEM -SOLVING)
Reference: Electronics Communications Systems by Roy Blake, p. 870
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics () General Engineering and Applied Science () Electronics Engineering (/) Electronics System & Technologies
QUESTION: It is a wireless technology that enables a variety of contactless and
proximity-based applications, such as payments, information retrieval, mobile marketing
and device pairing. It has an operating range of 10 cm or less using the 13.56MHz
frequency band. There are currently three user modes defined for its operation: 1) Card
emulation, 2) Tag reading, and 3) Peer-to-peer (P2P). These modes are based on several
ISO/IEC standards, including ISO14443 A/B, ISO15693 and ISO18092.
ANSWER: NFC (Near Field Communication) SOLUTION ( IF PROBLEM -SOLVING)
Reference: http://www.gartner.com/it-glossary/near-field-communication-nfc/
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics () General Engineering and Applied Science () Electronics Engineering (/) Electronics System & Technologies
QUESTION: Assume we need to download text documents at the rate of 100 pages per
minute. What is the required bit rate of the channel?
ANSWER: 1.636 Mbps SOLUTION ( IF PROBLEM -SOLVING) A page is an average of 24 lines with 80 characters in each line. If assume that one character requires 8 bits, the bit rate is: Bit rate = (100)(24)(80)(8) = 1 636 000 bps Bit rate = 1.636 Mbps
Reference: Data Communications and Networking by Behrouz A. Forouzan, 4th
ed., p73
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: () Mathematics () General Engineering and Applied Science () Electronics Engineering (/) Electronics System & Technologies
QUESTION: Determine the fade margin for the following conditions: distance between
sites, d = 50 km; frequency, f = 1.8GHz; very dry mountainous terrain and a reliability of
99.9999%.
ANSWER: 36. 25 dB SOLUTION ( IF PROBLEM -SOLVING) Fm = 30logD + 10log(6ABf) 10log(1-R) 70 Where A = roughness factor, 0.25 for mountainous terrain B = factor to convert a worst-month probability to an annual probability, 0.125 for very dry mountainous terrain = 30log(50) + 10log[(6)(0.25)(0.125)(1.8) 10log(1-0.999999) 70 Fm = 36.25 dB
Reference: Electronics Communications Systems by Wayne Tomasi, p. 628-629
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: (/) Mathematics () General Engineering and Applied Science () Electronics Engineering () Electronics System & Technologies
QUESTION: The geometric mean of several positive numbers is smaller than the arithmetic mean of these numbers.
ANSWER: Cauchys Mean Theorem SOLUTION ( IF PROBLEM -SOLVING)
Reference: 100 Great Problems of Elementary Mathematics by Heinrich Drrie, p.37
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: (/) Mathematics () General Engineering and Applied Science () Electronics Engineering () Electronics System & Technologies
QUESTION: A line segment joining the vertex of a triangle to any given point on the
opposite side is called?
ANSWER: Cevian SOLUTION ( IF PROBLEM -SOLVING)
Reference: Geometry Revisited Vol. 19 by H.S.M. Coxeter & Samuel L. Greitzer, p.4
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: (/) Mathematics () General Engineering and Applied Science () Electronics Engineering () Electronics System & Technologies
QUESTION: It states that if L{F1(t)} = L{F2(t)}, then F1(t) F2(t) = N(t), where N(t) is a
null function. That is, an inverse Laplace transform is unique for the addition of an
arbitrary null function.`
ANSWER: Lerchs Theorem SOLUTION ( IF PROBLEM -SOLVING)
Reference: Elementary Differential Equations 7th edition by Earl D. Rainville & Phillip E. Bedient, p. 210
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: (/) Mathematics () General Engineering and Applied Science () Electronics Engineering () Electronics System & Technologies
QUESTION: Find the shortest distance from the point to the plane
ANSWER: 4/3 units SOLUTION ( IF PROBLEM -SOLVING)
But
It follows that if is minimum, is also minimum. Applying maxima-minima for partial derivatives, we have:
Solving the two equations simultaneously and using we obtain
Hence,
Reference: Calculus with Analytic Geometry, pp. 441-442, Thurman S. Peterson
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IECEP-Manila Form 1 S.2012 TEST QUESTIONS
1. Please Use One Page per Question. 2. Fill-out all needed information. 3. Submissions with incomplete data will not be considered.
Name of School Technological University of the Philippines - Manila
Signature over Printed Name of the Coach/Adviser
Engr. Edmon O. Fernandez
Please indicate the subject: (/) Mathematics () General Engineering and Applied Science () Electronics Engineering () Electronics System & Technologies
QUESTION: A lumber mill cuts rectangular beams from circular logs. If the diameter of the log is 16 inches and the cross-sectional area of the beam is 120 square inches, find the dimensions of the cross section of the beam. Give the exact values. ANSWER: SOLUTION ( IF PROBLEM -SOLVING)
Let a and b be the dimensions
Hence,
Reference: Precalculus: Functions and Graphs, pg.80, 5th edition, Barnett, Zeigler and Bayleen