ES3J STUDY UPDATED QUESTIONS AND ANSWERS
Rectifier - CORRECT ANSWER✅✅✅What part of power supply converts electrical current from AC to
DC
Grounded loop - CORRECT ANSWER✅✅✅Tearing or flagging of a video picture is the direct result of
Frequency multiplexing - CORRECT ANSWER✅✅✅You have a frequency that has been amplified to
four frequencies the change is called
19-23" wide - CORRECT ANSWER✅✅✅Which of the following is true of an equipment rack?
In series with the heating contacts - CORRECT ANSWER✅✅✅The heat anticipator on the load of a
line voltage thermostat is connected ______?
75 - CORRECT ANSWER✅✅✅The standard impedence of a standard video coax cable is ____ OHMS?
Boost transformer - CORRECT ANSWER✅✅✅How do you increase the voltage through a circuit after
it passes through?
Reflective light - CORRECT ANSWER✅✅✅How would you get the best picture on a monitor?
Green with a yellow stripe - CORRECT ANSWER✅✅✅What is the color of an equipment grounding
wire?
900 OHM - CORRECT ANSWER✅✅✅What is the minimum resistance error of a 1000 OHM resistor
with an error of 10%?
Fiber Optic - CORRECT ANSWER✅✅✅The best product for a closed circuit system is with more than
7000 without reamplification is?
, The F speed stop of the lens - CORRECT ANSWER✅✅✅What is a cameras sensitivity based on?
Balancing Transformer - CORRECT ANSWER✅✅✅How do you get rid of snow on a monitor?
Ceiling grid - CORRECT ANSWER✅✅✅When mounting an interior camera which of the following is
not a suitable location?
Fiber Optic Cable - CORRECT ANSWER✅✅✅Given: 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 - CORRECT ANSWER✅✅✅Which of the following should not cause a swinger?
Radiated Energy - CORRECT ANSWER✅✅✅When white and black bars appear on a video monitor,
this condition is known as hum, what causes this condition?
Voltage - CORRECT ANSWER✅✅✅Which of the following factors would not affect the temperature
of conductors under a full load?
Star, bus, hierrachal ARE ALL multipoint - CORRECT ANSWER✅✅✅What type of network is not
considered multipoint?
Voltmeter - CORRECT ANSWER✅✅✅What device is best used to test a dry cell?
Shorted - CORRECT ANSWER✅✅✅A 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 - CORRECT ANSWER✅✅✅All of the following are advantages to using a relay to
remote actuate a signaling device except?
Rectifier - CORRECT ANSWER✅✅✅What part of power supply converts electrical current from AC to
DC
Grounded loop - CORRECT ANSWER✅✅✅Tearing or flagging of a video picture is the direct result of
Frequency multiplexing - CORRECT ANSWER✅✅✅You have a frequency that has been amplified to
four frequencies the change is called
19-23" wide - CORRECT ANSWER✅✅✅Which of the following is true of an equipment rack?
In series with the heating contacts - CORRECT ANSWER✅✅✅The heat anticipator on the load of a
line voltage thermostat is connected ______?
75 - CORRECT ANSWER✅✅✅The standard impedence of a standard video coax cable is ____ OHMS?
Boost transformer - CORRECT ANSWER✅✅✅How do you increase the voltage through a circuit after
it passes through?
Reflective light - CORRECT ANSWER✅✅✅How would you get the best picture on a monitor?
Green with a yellow stripe - CORRECT ANSWER✅✅✅What is the color of an equipment grounding
wire?
900 OHM - CORRECT ANSWER✅✅✅What is the minimum resistance error of a 1000 OHM resistor
with an error of 10%?
Fiber Optic - CORRECT ANSWER✅✅✅The best product for a closed circuit system is with more than
7000 without reamplification is?
, The F speed stop of the lens - CORRECT ANSWER✅✅✅What is a cameras sensitivity based on?
Balancing Transformer - CORRECT ANSWER✅✅✅How do you get rid of snow on a monitor?
Ceiling grid - CORRECT ANSWER✅✅✅When mounting an interior camera which of the following is
not a suitable location?
Fiber Optic Cable - CORRECT ANSWER✅✅✅Given: 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 - CORRECT ANSWER✅✅✅Which of the following should not cause a swinger?
Radiated Energy - CORRECT ANSWER✅✅✅When white and black bars appear on a video monitor,
this condition is known as hum, what causes this condition?
Voltage - CORRECT ANSWER✅✅✅Which of the following factors would not affect the temperature
of conductors under a full load?
Star, bus, hierrachal ARE ALL multipoint - CORRECT ANSWER✅✅✅What type of network is not
considered multipoint?
Voltmeter - CORRECT ANSWER✅✅✅What device is best used to test a dry cell?
Shorted - CORRECT ANSWER✅✅✅A 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 - CORRECT ANSWER✅✅✅All of the following are advantages to using a relay to
remote actuate a signaling device except?
