home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Compu-Fix
/
Compu-Fix.iso
/
misc
/
hambone
/
exam2.tst
< prev
next >
Wrap
Text File
|
1993-03-01
|
5KB
|
157 lines
█▀███▀██▀▀▀▀▀██▀▀▀▀▀█
█ ███ ██ ███ ██ █ █ █
█ ▀▀▀ ██ ▀▀▀ ██ █ █ █
█ ███ ██ ███ ██ ███ █
▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
│ ┌──┐ ┌───┐
├──┐ │ │ ├──┐ ├───┘
│ │ └──┘ │ │ └───┘
└──┘ └
NAME:__________________________________ 115 Possible Points
ELECTRONICS REVIEW EXAM #1
================================================================
1. There are two kinds of electricity (current). (6 points)
A. _____________ B. ______________
The type of current that has frequency is ___________ .
The type of current that should not have frequency is ______.
"Ripple" is an unwanted source of_____________. It is
eliminated by regulators and/or_______________ capacitors.
2. In order for electricity to do any work (energy) the electrons
must be _______________ by a generator or battery and flow in a
complete ______________ . Most electronic devices like stereos,
television sets, recorders, etc. convert _______ voltage to
voltage to make it more manageable. This is usually done with
devices called ______________ . (5 points)
3. Define a LINEAR RELATIONSHIP and give an example.
__________________________________________ . (5 points)
4. Resistors are devices used to control the amount of ___________
that will flow in a circuit. Their values are identified using the
term _______ after the name of the man who discovered the devices.
(2 points)
The resistor color code is used to identify the value of a
resistor. Write the color value for the number given. (1 point
each)
0 = 5 =
1 = 6 =
2 = 7 =
3 = 8 =
4 = 9 =
5. Using the OHM'S LAW calculate the following: (1 point each)
A. If R=1200 and I=12 solve for E.
B. If E=120 and R=35 solve for I.
C. If I=10 and R=33 solve for E.
D. If E=50 and I=51 solve for R.
6. The fourth color band on a resistor determines the _________
of the resistor. (1 point)
7. ConEdison provides homes with ______ volts
at a frequency of _______ Hz. (3 points)
8. Define RESONANCE.
_______________________________________________ . (2 points)
9. Oscillators are used to change ________________ . (1 point)
10. Television and radio waves are commonly referred to as ______
or ___________________ and are measured in _________ . (3 points)
11. In amplifiers we control a _________________________ with a
__________________ in a ______________ relationship. (5 points)
12. Comparing transistors and tubes identify the corresponding
parts: (1 point each)
A. BASE = ____________ B. GRID = _____________
C. EMITTER = ____________ D. COLLECTOR = _____________
13. The transistor was invented by _____________ ,____________ ,
______________ at Bell Laboratories in 1947. (3 points)
14. There are basically two types of transistors. Name them. (2
points)
A. ______________ B. ______________
15. NPN and PNP transistors are _____________ types. FET or JFET
transistors are _____________ types. ( 2 points)
16. There are basically two types of integrated circuits. Name
them. (2 points)
A. _________________ B. ___________________
17. An ____________________ is made up of many components on a
silicon substrate and can be used as amplifiers or variable
filters. The feedback loop determines the _________ of this device.
(2 points)
18. The measuring stick for capacitors is _____________ . They have
the ability to pass ____________ and store ___________ for a
given amount of time which is determined by the value in
___________ . (4 points)
19. Draw the schematic for a full wave bridge rectifier assembly
and label the polarities, voltages and components. ( 5 points)
20. Discuss, IN DETAIL, how a color television picture tube works.
. (10 points)
21. Draw the schematic symbols for the following components. ( 1
point each)
1. Resistor 2. Potentiometer 3. Battery
4. NPN transistor 5. PNP transistor 6. Capacitor
7. Ground 8. SPST switch 9. Iron core transformer
10. Antenna 11. Diode 12. Fuse