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When working with and testing lead acid batteries: - ANSWER-
always wear eye
protection, never cause a spark and charge in a
ventilated room
Audio signals, such as the output from DVD players, satellite
receivers and preamplifiers, usually are of what amplitude for
input to a TV, modulator or other equipment? - ANSWER-1 volt
peak to peak
Which of these signal parameters does a spectrum analyzer
show? - ANSWER-
Magnitude and
frequency
Permanent, non-volatile, non-removable data storage in a
computer is: -
ANSWER-
ROM
,What should be used first to clean a corroded plated
soldering iron tip? -
ANSWER-Flux, cloth after
heating
When soldering high voltage connections: - ANSWER-leave
the terminal with
smooth and rounded covering
of solder
Class AB operation of an audio amplifier means that current
flows through the active device(tube, transistor, FET, IC) for
________ degrees of the input signal wave. - ANSWER-more
than 180 but less than 360
A track on a computer removable disk is: - ANSWER-divided
into sectors
A PC has Conventional RAM and ROM memory area (in a PC it
is 0 to 640 kilobytes); Upper memory area (640 Kb to 1 meg) and
extended memory area (above 1 megabyte). What other names
for internal memory types do PCs have? - ANSWER-Tape drive
Which video system has the highest resolution? - ANSWER-
XVGA
You would want to use a dual trace oscilloscope to measure: -
ANSWER-signal
,differences between two
points
Common Intermediate Frequencies (IF's) for AM and FM
commercial broadcast
receivers are: - ANSWER-455 kHz and
10.7 MHz
Analog radio receiver signal compression: - ANSWER-
reduces the high
frequency received signal
amplitude
Coaxial cable line losses at RF frequencies are due to: -
ANSWER-wire
resistance, capacitive and inductive
reactance
You are troubleshooting audio reproduction equipment and
measure the signal
to be input into the audio amplifier. What approximate RMS
level would you
except that signal to be? - ANSWER-1,000
millivolts
The noise level in a radio receiver is generated mostly in the:
- ANSWER-RF
section
, The fast charging rate for a NiCad or Ni-MH battery
should not exceed
_______% of its AHr, or ampere hour rating? -
ANSWER-10
Which one of the following in a PC would be part of disk
operations? -
ANSWER-SATA or IDE
controller
An LED: - ANSWER-can be used as a fiber optic signal source
A dual trace oscilloscope may have: - ANSWER-a Z input
for intensity
modulation
The gain of an-amp connected as an inverting amplifier is
determined by the
external _______. - ANSWER-feedback and
input resistors
Diodes are made from one type of material. - ANSWER-false
Which propagation condition would be significant for UHF
signal to be received
at a distance of 500 miles? - ANSWER-
Tropospheric ducting