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EXAM1.TST
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1990-05-26
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NAME:_______________________________________________________
ELECTRONICS EXAM #1
(1) IDENTIFY THE FOLLOWING RESISTOR VALUES BY ENTERING THE COLORS
NEXT TO THE VALUE:
A. 120k
B. 1.9K
C. 2.2K
D. 1.8M
E. 3.4M
F. 10
G. 220K
H. 10K
(2) IDENTIFY THE FOLLOWING RESISTOR VALUES BY THE COLORS GIVEN.
A. RED-BLUE-ORANGE
B. BROWN-BLACK-RED
C. BROWN-GREEN-GREEN
D. ORANGE-WHITE-BLUE
E. YELLOW-YELLOW-YELLOW
F. BLUE-GREEN-ORANGE
G. RED-RED-BLUE
H. BLACK-BROWN-BLACK
(3) DESCRIBE HOW A RESISTOR MAY BE USED TO SHUNT A CURRENT METER.
(4) DRAW A COMPLETE FULL-WAVE BRIDGE RECTIFIER POWER SUPPLY
INCLUDING A TRANSFORMER, ELECTROLETEC CAPACITOR, LOAD RESISTOR AND
LIGHT EMITTING DIODE. THE SUPPLY MUST PRODUCE 6 VOLTS DC AND WELL
FILTERED.
(5) DESCRIBE THE ENTIRE ELECTRON SCANNING SYSTEM FOR A COLOR
TELEVISION PICTURE TUBE; HOW THE ELECTRONS ARE EMITTED, CONTROLLED,
PHOSPHOR MATRIX, SCAN LINES AND TIMES AS THOROUGHLY AS POSSIBLE.
(6) DESCRIBE HOW ELECTRICITY FLOWS IN A CIRCUIT.
(7) DEFINE RESONANCE.
(8) DEFINE A LINEAR REACTION.
(9) DEFINE AMPLIFICATION.
(10) A SILICON CONTROLLED RECTIFIER (SCR) CAN BE COMPARED TO WHICH
OF THE FOLLOWING:
A. POTENTIOMETER F. A,C & D
B. RELAY G. A,B & C
C. SWITCH H. B & C
D. TRANSISTOR I. D & B
E. LED J. ALL OF THE ABOVE
(11) SILICON IS A [ ] GOOD [ ] POOR CONDUCTOR OF ELECTRICITY.
(12) FARAD REFERS TO THE VALUE OF A ________________________ .
(13) OHM REFERS TO THE VALUE OF A __________________________ .
(14) IF I=20 AND E=12, WHAT IS R? __________________________ .
(15) IF R=300 AND I=8, WHAT IS E? __________________________ .
(16) IF E=12 AND R=200, WHAT IS I? _________________________ .
(17) ELECTRONS MUST FLOW IN A ______________ BEFORE THEY CAN DO
ANY WORK.
(18) DEFINE "RIPPLE" AND HOW TO ELIMINATE IT.
(19) ANYTIME THAT ELECTRICAL CURRENT IS USED TO DO WORK THERE IS
ALWAYS SOME _____________ GENERATED AND IT IS REFERRED TO AS
___________ .
(20) A DIODE IS USED PRIMARILY TO CONVERT ______ TO _______
VOLTAGE.
(21) A DIODE HAS TWO PARTS THAT ARE CALLED THE ____________
AND ______________ .
(22) WHICH END OF A DIODE HAS A POSITIVE POLARITY? __________.
(23) CAPACITORS STORE ______ CURRENT BUT WILL PASS ________
CURRENT. DESCRIBE THIS PROCESS.
(25) A MICRO-MICRO-FARAD IS OFTEN CALLED A __________________ .