ES3J STUDY QUESTIONS &
ANSWERS(RATED A+)
Rectifier - ANSWERWhat part of power supply converts electrical current from AC to
DC
Grounded loop - ANSWERTearing or flagging of a video picture is the direct result of
Frequency multiplexing - ANSWERYou have a frequency that has been amplified to
four frequencies the change is called
19-23" wide - ANSWERWhich of the following is true of an equipment rack?
In series with the heating contacts - ANSWERThe heat anticipator on the load of a line
voltage thermostat is connected ______?
75 - ANSWERThe standard impedence of a standard video coax cable is ____ OHMS?
Boost transformer - ANSWERHow do you increase the voltage through a circuit after it
passes through?
Reflective light - ANSWERHow would you get the best picture on a monitor?
Green with a yellow stripe - ANSWERWhat is the color of an equipment grounding
wire?
900 OHM - ANSWERWhat is the minimum resistance error of a 1000 OHM resistor with
an error of 10%?
Fiber Optic - ANSWERThe best product for a closed circuit system is with more than
7000 without reamplification is?
The F speed stop of the lens - ANSWERWhat is a cameras sensitivity based on?
Balancing Transformer - ANSWERHow do you get rid of snow on a monitor?
Ceiling grid - ANSWERWhen mounting an interior camera which of the following is not a
suitable location?
Fiber Optic Cable - ANSWERGiven: Hardwire alarm system control panel should be
installed so that they help reduce magnetic downtime and false alarms, electromagnetic
interference must be prevented from entering the system control panel and causing
interference. Which of the following eliminates EMI?
, Short Circuit - ANSWERWhich of the following should not cause a swinger?
Radiated Energy - ANSWERWhen white and black bars appear on a video monitor, this
condition is known as hum, what causes this condition?
Voltage - ANSWERWhich of the following factors would not affect the temperature of
conductors under a full load?
Star, bus, hierrachal ARE ALL multipoint - ANSWERWhat type of network is not
considered multipoint?
Voltmeter - ANSWERWhat device is best used to test a dry cell?
Shorted - ANSWERA length of COAX cable used for data is terminated at one end with
50 OHM terminator, the resistance between the shield and the center conductor at the
other end of the cable is 0 OHMS; this indicated the cable continuity is _____?
Bell Current Stays - ANSWERAll of the following are advantages to using a relay to
remote actuate a signaling device except?
44 - ANSWERGiven: 4 Speakers wired in seried of 4 OHMS, 8 OHMS, 16 OHMS, and
16 OHMS, what is the total impedence?
Black - ANSWERThe power wire for AC is designated by what color?
75 OHMS - ANSWERThe standard impedance of the terminator cable is
Latching Relay (this is the answer)
Exit Delay
Deranged Delay - ANSWERAll of the following are the same except
ADD ground straps - ANSWERAll of the following are means to repair objectionable
current in metal raceways except:
Latching Relay - ANSWERWhat keeps the alarm circuit activated and the output device
operating even if the protective circuit is restored to normal?
3 Point connection - ANSWEROffice telecommunication cables are routed into
designated local cable rooms that function as remote cable distribution points for room
connections, this strategy is called a _____?
Short circuits - ANSWERan OHM meter reading of 0 OHMS indicates which of the
following?
Knots and Kinks easily - ANSWERWhat is a major disadvantage to using copper clad
steel cable for an antenna?
ANSWERS(RATED A+)
Rectifier - ANSWERWhat part of power supply converts electrical current from AC to
DC
Grounded loop - ANSWERTearing or flagging of a video picture is the direct result of
Frequency multiplexing - ANSWERYou have a frequency that has been amplified to
four frequencies the change is called
19-23" wide - ANSWERWhich of the following is true of an equipment rack?
In series with the heating contacts - ANSWERThe heat anticipator on the load of a line
voltage thermostat is connected ______?
75 - ANSWERThe standard impedence of a standard video coax cable is ____ OHMS?
Boost transformer - ANSWERHow do you increase the voltage through a circuit after it
passes through?
Reflective light - ANSWERHow would you get the best picture on a monitor?
Green with a yellow stripe - ANSWERWhat is the color of an equipment grounding
wire?
900 OHM - ANSWERWhat is the minimum resistance error of a 1000 OHM resistor with
an error of 10%?
Fiber Optic - ANSWERThe best product for a closed circuit system is with more than
7000 without reamplification is?
The F speed stop of the lens - ANSWERWhat is a cameras sensitivity based on?
Balancing Transformer - ANSWERHow do you get rid of snow on a monitor?
Ceiling grid - ANSWERWhen mounting an interior camera which of the following is not a
suitable location?
Fiber Optic Cable - ANSWERGiven: Hardwire alarm system control panel should be
installed so that they help reduce magnetic downtime and false alarms, electromagnetic
interference must be prevented from entering the system control panel and causing
interference. Which of the following eliminates EMI?
, Short Circuit - ANSWERWhich of the following should not cause a swinger?
Radiated Energy - ANSWERWhen white and black bars appear on a video monitor, this
condition is known as hum, what causes this condition?
Voltage - ANSWERWhich of the following factors would not affect the temperature of
conductors under a full load?
Star, bus, hierrachal ARE ALL multipoint - ANSWERWhat type of network is not
considered multipoint?
Voltmeter - ANSWERWhat device is best used to test a dry cell?
Shorted - ANSWERA length of COAX cable used for data is terminated at one end with
50 OHM terminator, the resistance between the shield and the center conductor at the
other end of the cable is 0 OHMS; this indicated the cable continuity is _____?
Bell Current Stays - ANSWERAll of the following are advantages to using a relay to
remote actuate a signaling device except?
44 - ANSWERGiven: 4 Speakers wired in seried of 4 OHMS, 8 OHMS, 16 OHMS, and
16 OHMS, what is the total impedence?
Black - ANSWERThe power wire for AC is designated by what color?
75 OHMS - ANSWERThe standard impedance of the terminator cable is
Latching Relay (this is the answer)
Exit Delay
Deranged Delay - ANSWERAll of the following are the same except
ADD ground straps - ANSWERAll of the following are means to repair objectionable
current in metal raceways except:
Latching Relay - ANSWERWhat keeps the alarm circuit activated and the output device
operating even if the protective circuit is restored to normal?
3 Point connection - ANSWEROffice telecommunication cables are routed into
designated local cable rooms that function as remote cable distribution points for room
connections, this strategy is called a _____?
Short circuits - ANSWERan OHM meter reading of 0 OHMS indicates which of the
following?
Knots and Kinks easily - ANSWERWhat is a major disadvantage to using copper clad
steel cable for an antenna?
