USCG ETC SWE EXAM QUESTIONS AND FULLY
ACCURATE ANSWERS
Hand operated devices including switches, jacks and push buttons shall be
located - ANSWER At least .3 meters (1 foot) but not more than 1.8 meters (6
feet) above the deck
Radar modulator pulse cables and sonar transducer cables are physically
separated at least: - ANSWER 18 inches from all other cables, except at the
point of entrance to the modulator, transmitter, or transducer.
Radiation that strips electronis is called: - ANSWER Ionizing radiation
Penetrating ____________ radiation emitted from external sources presents the
most difficult hazard to protect against - ANSWER Gamma
Microwaves are electromagnetic radiation int he region from: - ANSWER 30
MHz to 300 GHz
Microwaves can be lethal when the power intensity and exposure time are
sufficient to cause a rise in temperature that exceeds an organism's homeostatic
capabilities; this occurs when the temperature rise exceeds: - ANSWER 5
degrees C (9 degrees F)
The use of _____________ with electronic equipment or electronic equipment
spaces is strictly forbidden - ANSWER steel wool or emery paper or cloth
Nickle cadmium batteries or cells must be charged only in: - ANSWER series,
never in parallel
The manual charging rate for a nickel cadmium battery is: - ANSWER c/10,
where "c" is the ampere hour capacity of the battery.
,A completely discharged battery requires _______ hours of charging -
ANSWER 14-16
The usual trickle-charge rate is __________ unless the manufacturer
recommends otherwise. - ANSWER C/100
All contacts, terminals, and like devices having potentials in excess of
_________ are clearly marked "danger high voltage (maximum voltage
applicable VOLTS," in addition to having guards and barriers as specified in the
preceding paragraph - ANSWER 500 volts RMS or DC
Onboard naval ships the relative humidity shall not exceed: - ANSWER 55%
____ occurs when a transmitted electromagnetic wave passes through the
receiver antenna and induces a voltage in the antenna - ANSWER reception
_____ is the ability of the receiver to select a particular frequency of a station
from all other station frequencies appearing at the antenna of the receiver -
ANSWER Selection
______ is the action of separating the low frequency intelligence from the high
frequency carrier. A detector circuit is used to accomplish this action -
ANSWER Detection
_____ is the action of converting the electrical signals to sound waves, which
can then be interpreted by your ears as speech, music, and the like. An example
of this might be the stereo speakers in your car - ANSWER Reproduction
IRT the Spectrum Analyzer; On the vertical or Y axis, the _____ are plotted -
ANSWER amplitudes
IRT the Spectrum Analyzer; On the horizontal x axis, the ______ are plotted -
ANSWER Frequencies (time based)
____ is used to connect a small-diameter wire, such as in a lighting fixture, to a
large diameter wire used in a branch circuit. - ANSWER The fixture joint
, To obtain the ____, the cells are connected in series as shown in figure 2-6 -
ANSWER Higher voltage
Rigid waveguides within 1.8 meters (6 feet) of each other should be bonded
together through the entry plate or by means of a crimp type lug fastened under
the waveguide flange bolts and _____. - ANSWER No 6 AWG wire
Metal underground water pipes typically exhibit a resistance to earth of less
than: - ANSWER three ohms
What type of grounding is used for lower frequencies, 0-30 kHz up to 300 kHz?
- ANSWER Single Point Ground
Aluminum parts or components should not be cleaned in - ANSWER high
caustic solutions
Length of time in the ultrasonic cleaner - ANSWER 15 minutes max
A typical ultrasonic cleaning unit is one in which the frequency of the ultrasonic
oscillator is approximately - ANSWER 20,000 hertz
____ is used for moving or shifting plates or parts so that corresponding holes
will line up - ANSWER Aligning punch
The point of this punch is carefully ground to an angle of _____,which is the
same as the angel of a standard twist drill. - ANSWER 60 degrees
Coaxial cables shall be stored in an area when the ambient temperature is less
than: - ANSWER 66* celsius
The minimum bend radius for flexible coaxial cables shall be: - ANSWER 10
times the cable diameter
The minimum bend radius for flexible coaxial cables when the cable is subject
to repeated flexure is: - ANSWER 20 times the cable diameter
ACCURATE ANSWERS
Hand operated devices including switches, jacks and push buttons shall be
located - ANSWER At least .3 meters (1 foot) but not more than 1.8 meters (6
feet) above the deck
Radar modulator pulse cables and sonar transducer cables are physically
separated at least: - ANSWER 18 inches from all other cables, except at the
point of entrance to the modulator, transmitter, or transducer.
Radiation that strips electronis is called: - ANSWER Ionizing radiation
Penetrating ____________ radiation emitted from external sources presents the
most difficult hazard to protect against - ANSWER Gamma
Microwaves are electromagnetic radiation int he region from: - ANSWER 30
MHz to 300 GHz
Microwaves can be lethal when the power intensity and exposure time are
sufficient to cause a rise in temperature that exceeds an organism's homeostatic
capabilities; this occurs when the temperature rise exceeds: - ANSWER 5
degrees C (9 degrees F)
The use of _____________ with electronic equipment or electronic equipment
spaces is strictly forbidden - ANSWER steel wool or emery paper or cloth
Nickle cadmium batteries or cells must be charged only in: - ANSWER series,
never in parallel
The manual charging rate for a nickel cadmium battery is: - ANSWER c/10,
where "c" is the ampere hour capacity of the battery.
,A completely discharged battery requires _______ hours of charging -
ANSWER 14-16
The usual trickle-charge rate is __________ unless the manufacturer
recommends otherwise. - ANSWER C/100
All contacts, terminals, and like devices having potentials in excess of
_________ are clearly marked "danger high voltage (maximum voltage
applicable VOLTS," in addition to having guards and barriers as specified in the
preceding paragraph - ANSWER 500 volts RMS or DC
Onboard naval ships the relative humidity shall not exceed: - ANSWER 55%
____ occurs when a transmitted electromagnetic wave passes through the
receiver antenna and induces a voltage in the antenna - ANSWER reception
_____ is the ability of the receiver to select a particular frequency of a station
from all other station frequencies appearing at the antenna of the receiver -
ANSWER Selection
______ is the action of separating the low frequency intelligence from the high
frequency carrier. A detector circuit is used to accomplish this action -
ANSWER Detection
_____ is the action of converting the electrical signals to sound waves, which
can then be interpreted by your ears as speech, music, and the like. An example
of this might be the stereo speakers in your car - ANSWER Reproduction
IRT the Spectrum Analyzer; On the vertical or Y axis, the _____ are plotted -
ANSWER amplitudes
IRT the Spectrum Analyzer; On the horizontal x axis, the ______ are plotted -
ANSWER Frequencies (time based)
____ is used to connect a small-diameter wire, such as in a lighting fixture, to a
large diameter wire used in a branch circuit. - ANSWER The fixture joint
, To obtain the ____, the cells are connected in series as shown in figure 2-6 -
ANSWER Higher voltage
Rigid waveguides within 1.8 meters (6 feet) of each other should be bonded
together through the entry plate or by means of a crimp type lug fastened under
the waveguide flange bolts and _____. - ANSWER No 6 AWG wire
Metal underground water pipes typically exhibit a resistance to earth of less
than: - ANSWER three ohms
What type of grounding is used for lower frequencies, 0-30 kHz up to 300 kHz?
- ANSWER Single Point Ground
Aluminum parts or components should not be cleaned in - ANSWER high
caustic solutions
Length of time in the ultrasonic cleaner - ANSWER 15 minutes max
A typical ultrasonic cleaning unit is one in which the frequency of the ultrasonic
oscillator is approximately - ANSWER 20,000 hertz
____ is used for moving or shifting plates or parts so that corresponding holes
will line up - ANSWER Aligning punch
The point of this punch is carefully ground to an angle of _____,which is the
same as the angel of a standard twist drill. - ANSWER 60 degrees
Coaxial cables shall be stored in an area when the ambient temperature is less
than: - ANSWER 66* celsius
The minimum bend radius for flexible coaxial cables shall be: - ANSWER 10
times the cable diameter
The minimum bend radius for flexible coaxial cables when the cable is subject
to repeated flexure is: - ANSWER 20 times the cable diameter
